web-development

[inland timber]

hey, can anybody explain to me in short how can a print() function relate in any way to a text contained inside an HTML structure? bc It just feels weird to me, like where's the interpreter in that web?

[vestal hound]

can you elaborate?

I don't really understand

maybe you can give an example

[inland timber]

sure!

let's say that I install Flask module, import it, create some function with a route decorator to some address and then initialise Flask's server

now, If I open the local address where the server is being hosted, I see the output of the function on-screen (let's say, for the sake of simplicity, that It is a print() statement)

so my doubt is, how does the whole process of relating the script where I wrote the function's output with the webpage display of that output?

[vestal hound]

when you say "on-screen"

you mean

in the browser?

[inland timber]

yeah

[vestal hound]

that shouldn't be happening

you mean like you have:

from flask import Flask

app = Flask(__name__)
@app.route('/')
def get():
    print("printed string")
    return "returned string"

you see "printed string" in your browser window?

[inland timber]

sorry for the delay, I was making the example so you see what I mean

there you go

[vestal hound]

ah

[inland timber]

yeah It's a really simple doubt itself I guess

[vestal hound]

then that's not a print statement, right

that is what is being returned

from the function

so basically

[inland timber]

yep you're right, that was a misconception by my side

[vestal hound]

a web framework is just a bunch of code

that maps routes (URLs) to Python functions

those Python functions do whatever and return some data

then the web framework takes that data

and processes it in a way that web browsers will understand

and finally returns it to the web browser requesting it

so the cycle goes something like this

[inland timber]

user script -> web framework -> translation of the data for web browser compatibility -> web browser display?

[vestal hound]

1. web browser visits a page with a given URL (sends a "request")
2. the web framework looks in its data store for the Python function that will handle that URL
3. the web framework calls that function
4. that function does stuff and returns something
5. the web framework processes that "something"
6. the web framework sends the processed something back to the browser (the "response")

you can look up the request-response cycle

[inland timber]

oh cool, imma save all this

[vestal hound]

it's a fair bit more complicated

than that

[inland timber]

thank you so much 😄

[vestal hound]

there are things like content negotiation

caching

etc.

but this is the gist of it

[inland timber]

yeah but for starters this is nice

[vestal hound]

no worries 👋

btw just curious

are you from India?

[inland timber]

nah I'm from Spain hahaha

[vestal hound]

oh that's interesting

I was a bit confused

[inland timber]

why is that?

[vestal hound]

because usually "doubt" is used to mean "suspect" (like "I doubt your intentions")

the way you used it was more to mean "question", which is very common among people who come from India

like "I have a doubt" instead of "I have a question"

just an interesting point, nothing big

[inland timber]

yeah, in spanish 'question' is more like directly asking something without any real interest and I guess I related 'doubt' to the spanish equivalent of asking something with interest, 'duda'

😛

next time I'll just use "inevitable concern about the topic hereby discussed" lmao that'll be funny asf

[vestal hound]

ah okay LOL

yup no worries I understood you perfectly

it is unfortunate that English has only one word for this kind of thing 🥴

[inland timber]

yeah :s, well, imma go take a look at that backend mistery, see ya

[vestal hound]

yup, atb! 👋

[dusk portal]

hey is any1 free rn??

[nimble epoch]

You need help?

[dusk portal]

done by myself tq for replying love u

[nimble epoch]

yw 🙂

[dusk portal]

btw can u give me some tips

[nimble epoch]

i dont even know whats your problem

what is it about?

[dusk portal]

i want tips to learn Django fast

[nimble epoch]

oh ok then

[dusk portal]

and mistakes what ppl do while learning Django

give all ur exp

to me of Django

plz

[nimble epoch]

ok

[dusk portal]

ik flask btw

[nimble epoch]

good

[dusk portal]

ok start

im seeing 👀

[nimble epoch]

what i do?

tell me whats your problem then ill help you with it

i cant give all of my exp

[dusk portal]

ok so i face problem while starting localhost server

[nimble epoch]

oh

[dusk portal]

why bro

[nimble epoch]

its kinda hard you want give all of your exp

[dusk portal]

tell the problems

which begginers face

and how to prevent

[nimble epoch]

i dont know what to say really. just tell whats wrong i can handle it

[dusk portal]

in short i want to know about how and which problems did all face and how to come up ig i dont want to lose but it seems vast and hard

then flask

[dusk portal]

why its too hard to open 127.0.0.8000 server in django

[nimble epoch]

no its not that hard

[dusk portal]

use terminal and stuff

[nimble epoch]

you mean 127.0.0.1:8000 right?

[nimble epoch]

commands make django even eazier

[dusk portal]

yes

u know flask??

its simple run

and we can debug errors ez too

but in django error comes in termanil

[nimble epoch]

i forgot and trying not to remember

[dusk portal]

thats annoyhing

[dusk portal]

lol why ;P

[nimble epoch]

no you can see errors even on your browser

[nimble epoch]

nvm

[dusk portal]

should i learrn from docs or videos

some says dont learn from videos and stuff

[nimble epoch]

you know i really recommand docs

[dusk portal]

oh any good reason

[nimble epoch]

the best videos outhere is for corey and i think even those videos are a bit complicated for beginners. and yeah something is a bit hard when you want to move to django

and if you a beginner and you have any problem with running the server i can guide you to there

[quick cargo]

for web dev

i highly recommend some of corey's videos

https://www.youtube.com/user/schafer5

he covers pretty much everything you'll need to get started with web dev and python in general

[opaque rivet]

and also 2 scoops of django 3.x, really good for best practices

anyone going to djangocon?

[nimble epoch]

oh that gotta be cool

[quaint holly]

ahhhhh

i will fucking kill myself if this work

[opaque rivet]

does anyone know if DRF custom field validators just point to the function object?
validators=[equity_is_valid]

what happens in the background? Is it something like functools.partial(equity_is_valid, *args_here)?

[inland olive]

Help with fixing this

[terse vapor]

Just a simple question😅 , how can you add token inside html href?

[random spindle]

hello. i want to learn django i am trying to add some back end functionality to a website i am making but i dont know where to start. I dont really know what django does or how it works so is there a good ressource to learn it

[calm plume]

The official Django tutorial is really good

[random spindle]

ok now i started the tutorial but i dont understand why u have to create a project directly from the command line

like dont u just create a file called like site.py and thats that

and then you import django

[calm plume]

It's easier to make it from the command line, since Django is pretty complicated and it gives you the starter files easily

[calm plume]

Sadly, Django isn't that easy

[random spindle]

yeah it seems rlly hard

like how long is it gonna take me to learn the basics of it

because i already have the css and html done

but if i am gonna create project i do i incorporate it with my html and css

do i put it in the same folder as where my css and html is

[calm plume]

You put html in the templates folder

And css in the static folder

[random spindle]

ok thats good

thanks

[jade nova]

Hi guys, I'm new here. I'm trying to create a website with Flask using HTML, CSS and JS. I need help creating a sort of drag and drop area where you can drop one word at the time to compose a sentence (the area becomes one "place" longer every time a word is added). Anyone has some ideas?
I so that drag and drop on HTML is not adviced and I did not find anything simple with JS.

[terse vapor]

So kinda like advanced version of wordtune?

[random spindle]

does that come with the declaration when you create project in command line

[calm plume]

Maybe? I forget. But the guide walks you through it

[random spindle]

i dont think it does

but maybe

lemme check

it does

[solid jackal]

Hi im learning Flask yet but it doesn't work

must i make a while thing?

[terse vapor]

it should be if __name__ == "__main__":

[solid jackal]

ok thanks

[terse vapor]

no problem

[median loom]

what are backends in django and how to use them?

[wooden ruin]

django is a backend web framework that you use to build server-side web applications

there are libraries that you can use with django that come with their own features, but they are not backends, simply libaries

popular django libraries include drf and channels

[median loom]

oh wait... i worded it incorrectly

i wanted to use a django builtin for rate limits

and i don't really get how to use it

and what it is really

[shadow nova]

which is best django or flask ?

[median loom]

depends on the purpose from what i've heard

and also the complexity

[shadow nova]

yeah.. but for webD which is most preferred ?

[median loom]

i don't really know

flask is simple and can be used for quick projects

but is limited when more complex features are needed

[wooden ruin]

there's no true answer to that afaik. django and flask have their own usage. flask is usually optimized for lighter apps and django for heavier applications

it just depends on your preferences

[shadow nova]

okay..

[native tide]

to help you we need the urls.py, views.py and just to be sure the models.py and the template u r trying to render

[native tide]

what kind of token and for what porpuse bc idk why you would need it inside an html <a> tag by the href attribute.

[buoyant shuttle]

For some reason Django isn't Inheriting my base file

It inherits but fails to inherit load static

[vestal hound]

wrong question

big part of SWE is understanding tradeoffs.

when you’re talking about such high level design choices there’s rarely a single right answer

and that’s also a false premise

what about other frameworks?

Quart, Sanic, FastAPI

[native tide]

yeah for some weird reasons you cant inherit template tags so for each file you need static you gotta load static on top even tho it inherits from a file where its already loaded

[vestal hound]

Pyramid?

[terse vapor]

Flask jwt is for the token, and I'm trying to use html href to open another route that has been secure with token

[violet briar]

with flask, should I use

<link rel="stylesheet" href="{{ url_for('static', filename='css/main.css') }}">

or should I use

<link rel="stylesheet" href="static/css/main.css">

both work btw

[topaz widget]

Anyone familiar with Vue? I have sections of a page that I built independently and wondering if it's going to be a problem if I have one Vue instance per section (multiple for a page).

No data is shared between sections.

[wooden ruin]

are you talking about multiple vue apps per page?

[calm plume]

Components?

[wooden ruin]

that might be hard to manage, i suggest just using components or even routes if it fits your need

[topaz widget]

Yeah, I am talking about multiple Vue apps, i.e.:

var page = new Vue( ...

I'm also using components, but only for markup that repeats itself multiple times in any given section.
I plan on using routes in the future, but all the sections are going to be under the same url (same page), so not sure routes is appropriate.
Thanks, though, and please let me know if you have any more suggestions.

[sturdy willow]

How to ensure the dragged element in selenium is** appended **to parent python ?

i meant the drag and drop in selenium

[outer apex]

Hey, I've been wondering about using a JS framework in this manner and was wondering if you're fine with me DM-ing you to ask some questions? 🙂

[calm plume]

You should probably ask here

More people can help that way

[native tide]

can someone look into this question I just posted to SO? It's better formatted there than it would be here

https://stackoverflow.com/questions/67480603/how-to-create-a-reactive-dropdown-menu-in-python-flask

[outer apex]

Oh, don't really need any help per se. I was just interested about the process, that's all.
I was curious about how the app is structured. Do you have Vue's library installed or are you using the CDN? Do you have individual JS files on each page?
How about building and minification of the Vue code?

[outer apex]

You can pass the list of authors down as a variable to the template

@app.route('/')
def index():
    authors = ['a', 'b', 'c']
    return render_template('form.html', authors_to_render=authors)

<select name="...">
    {% for author in authors_to_render %}
        <option value="{{ author }}">{{ author }}</option>
    {% endfor %}
</select>

[native tide]

Thanks this will help

[hybrid mantle]

Hi everyone, any one interested in working on a full stack side project with me, am mostly skilled on the backend need someone to help on the front end with React. I already have the project UI designs. Please DM me

[nimble epoch]

what you working on?

[inland oak]

I am in Django and
accepting some API request
what would be the most cultural way
to get the route of my server
https://domain.com

as not cultural, I could extract from request.get_raw_uri()

"/".join(request.get_raw_uri().split('/')[:3])

but it looks slightly as messy solution

[calm plume]

I've messed with Vue and React before, so I can try to explain

Usually for a production app, or even in development, you use the npm package. You really only use the cdn if you're a beginner

[calm plume]

Both React and Vue are made for single page applications, so when you bootstrap the project, it'll start with a single page.

However, you can use a tool like React router or Vue router to make multiple pages easier.

[inland oak]

It is incoming request to framework

def user_interface(request):

after dir(request)

['COOKIES', 'FILES', 'GET', 'META', 'POST', '__class__', '__delattr__', '__dict__', '__dir__', '__doc__', '__eq__', '__format__', '__ge__', '__getattribute__', '__gt__', '__hash__', '__init__', '__init_subclass__', '__iter__', '__le__', '__lt__', '__module__', '__ne__', '__new__', '__reduce__', '__reduce_ex__', '__repr__', '__setattr__', '__sizeof__', '__str__', '__subclasshook__', '__weakref__', '_cors_enabled', '_current_scheme_host', '_dont_enforce_csrf_checks', '_encoding', '_get_full_path', '_get_post', '_get_raw_host', '_get_scheme', '_initialize_handlers', '_load_post_and_files', '_mark_post_parse_error', '_messages', '_read_started', '_set_content_type_params', '_set_post', '_stream', '_upload_handlers', 'accepted_types', 'accepts', 'body', 'build_absolute_uri', 'close', 'content_params', 'content_type', 'encoding', 'environ', 'get_full_path', 'get_full_path_info', 'get_host', 'get_port', 'get_raw_uri', 'get_signed_cookie', 'headers', 'is_ajax', 'is_secure', 'method', 'parse_file_upload', 'path', 'path_info', 'read', 'readline', 'readlines', 'resolver_match', 'scheme', 'session', 'upload_handlers', 'user']

I think I could make the same with

f'{request.scheme}://{request.get_host()}'

technically it should be same thing

looks better solution too

[rapid spindle]

hi, i'm coding a django rest api, i have a question, is anyone know how to get id, or whatever, like my url looks like /polyrent/modules, but i wanna get for instance id, when I use /polyrent/modules/id, i do not get any id...

[nimble epoch]

you can use HyperlinkedIdentityField or you can use another view to get serializer but id

[rapid spindle]

@nimble epoch HyperlinkedIdentityField works for all fields? if i wanna get name, ect?

[nimble epoch]

you want to get fields?

[rapid spindle]

I meant, when I enter polyrent/modules/names for example, it gives only names

ect

[nimble epoch]

you can use loop then get index name out of it

[rapid spindle]

i see, thank you

[opaque rivet]

what's the point of having flask forwarding a request to django? that sounds nonsensical

[inland oak]

agreeing with user above

this is abosolute nonsense

[calm plume]

You use Flask or Django, not both

[inland oak]

yup. It is like buying a ticket to airplane, but instead of it travelling in train

or may be even more humorous. Having one leg in airplane, while second leg in the train

urgh. sounds horrific

I already wrote the answer

f'{request.scheme}://{request.get_host()}'

this is perfectly acceptable answer for Django

just stop it

f'{request.scheme}://{request.get_host()}:{request.get_port()}'

better with port

more accurate

REST

it does not matter

my question not needed those details

as I said, just stop

we already found the answer

[opaque rivet]

what does {request.get_host()} do? wouldn't this return the host of the client instead of your server?

[inland oak]

you know, very good question

Returns the originating host of the request using information from the HTTP_X_FORWARDED_HOST (if USE_X_FORWARDED_HOST is enabled) and HTTP_HOST headers, in that order. If they don’t provide a value, the method uses a combination of SERVER_NAME and SERVER_PORT as detailed in PEP 3333.

Example: "127.0.0.1:8000"

Raises django.core.exceptions.DisallowedHost if the host is not in ALLOWED_HOSTS or the domain name is invalid according to RFC 1034/1035.

according to documentation

I will check just to be sure, which host it is

[opaque rivet]

ah no, it will be the server's information

https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Host

i mixed up host with origin

[inland oak]

I will make full check anyway

you can't be sure

unless it was tested

got it.

it was actually

f'{request.scheme}://{request.get_host()}'

because get_host contains already port too

so, get_port was not needed

returns server address correctly

[opaque rivet]

good to know 👍

[solid goblet]

is Wix good to make a website?
need a payment system that also takes the users discord ID and adds it to database

[quick cargo]

No wix is not

[calm plume]

If you need a payment system, use a proper backend with a tool like Stripe. Wix does not have a backend

[quick cargo]

Things like that with backend integration and be done in a somewhat reasonable mannor cannot be done with something like wix, weebly or others

Or use patreon

Which is what most people choose to use for bots

[calm plume]

If you're want to take the time to set it up yourself, something like Stripe would be cleaner.
If you don't want to set it up yourself, Patreon is probably ebtter

[solid goblet]

so i have 0 experience with this stuff, basically i just googled website design, saw wix and started using it, but never finished it because i wanted to make the premium command for my bot first

honestly was just thinking of paying someone to do it for me
unless this can be easily done?
but i have no idea where to start or how to use things like stripe etc

[past cobalt]

Hi

[calm plume]

Paypal sounds like a good option if you don't know how to use Stripe

To make a website, you'll need to use html, css, and js

Probably with a Django, Flask, or FastAPI backend

Those online website makers are not good

[solid goblet]

so with no idea how to do any of this, where should i look to start

i started using wix because setting up the layout and look of the site is very easy, but no idea about the payment stuff
🤷

[calm plume]

Wix is not a good option

It doesn't have a backend

For html, css, and js, there are a number of online tutorials you could learn from

[opaque rivet]

Wix is terrible

[calm plume]

Wix and weebly are just bad

[opaque rivet]

I've used it in the past too, and it was such a pain

[solid goblet]

is running a website expensive

[calm plume]

Hosting one? It's possible to do it for free

Using something like Heroku with Netlify

[alpine moat]

well it depends upon factors like size, scale, function and other factors.....
But for just starting out or small scale, it could be done for completely free through services like glitch.com and repl.it

[past cobalt]

Good night everyone

Reply plz

[nimble epoch]

you need help?

[grave hazel]

hey could someone please help me here?

i've made an api with flask and everytime i run it, it shows me this:

is there any configuration i need to make or is it showing me this because i'm running this on localhost

[calm plume]

If you're on localhost, you can ignore that

[grave hazel]

i've turned debug mode off

[grave hazel]

ight, ty

[terse vapor]

?

[wooden ruin]

anyone know how i can deploy django with daphne if i'm using asgi/channels?

[zinc parrot]

I have a javascript question. I have the following code.

const animals = ['Hen', 'elephant', 'llama', 'leopard', 'ostrich', 'Whale', 'octopus', 'rabbit', 'lion', 'dog'];

// Create the secretMessage array below
const secretMessage = animals.map(animal => {
  return animal[0];
})

I'm learning about iterators on codecademy. Why, inside of the map method, are we defining a function animal and then treating animal like a value when we index it? It's confusing to me that animal seems to be acting as both a function and a value

[naive crater]

what you're using there is an arrow function. Arrow functions are kind of like lambdas in python, where they have no name. animal is the parameter for that function, so that's why it's being treated like a variable; it is one!

[zinc parrot]

@naive crater Thanks, and I appreciate the connection to lambdas in python. That is totally weird, but at least makes sense. It has been a bit of a trip coming from python where there is really one way to define a function (dunders withheld) to JS where there are at least three ways

[naive crater]

Yeah, I tend to write arrow functions with parenthesis around the parameters so it's less confusing, like js (animal) => {return animal[0];)
Not sure if that helps, but it makes more sense to me

[zinc parrot]

That definitely helps my brain feel more at ease with the syntax

[naive crater]

[zinc parrot]

Thanks 🙂

@naive crater Is there a rule of thumb you use for when to use the normal function declaration function functionName(params){ ... } vs an arrow function?

vs assigning an anonymous function to a variable

[naive crater]

I'm not really sure, my personal decision comes from whether I'm going to use a function again

if I'm just passing it into an event listener once or something, then I'll use an arrow function, but if I'll be reusing it then I'll define it normally

[zinc parrot]

Ok cool thanks.

[calm plume]

Personally, I use arrow functions with methods like map or reduce.

[zinc parrot]

Thanks 🙂

[grave star]

Can someone help me understand xpaths? Specifically, when I use selenium and input in the terminal:

Building = driver.find_element_by_xpath("//*[@id='span_tab_1']/table/tbody/tr/td[2]/div/a")
Building.click()

it works fine. but when I run "Building.click()" again I get the following error:

selenium.common.exceptions.StaleElementReferenceException: Message: stale element reference: element is not attached to the page document

BUT!!! if I press the up arrow key twice and reassign using the same the xpath, and then use "Building.click()" again, it works. I'll accept "it's a selenium thing" as an answer, but if there is something else going on in the background of the web page I'd like to know. Thank you!

[opaque rivet]

can celery not run async/asyncio functions?

[quick cargo]

no iirc

or atleast

not by default

and if i remember celery is thread based which causes alot of issues with asyncio

[opaque rivet]

oh I see, because I'm getting the error: 'channels_realtime_price' was never awaited result = (True, prepare_result(fun(*args, **kwargs))) so it's calling my functions and just getting a co-routine object back.

is it possible to call asyncio.create_task within sync functions?

[quick cargo]

err yes but actually no

it depends if the thread has a running event loop or not

[opaque rivet]

tried to do it in my celery task - didn't work. also tried to start an event loop (within the same function) but that didn't work. guess it's sync functions for me.

I have no clue (still) how asyncio can run concurrent tasks within the same thread on a fundamental lvl, is that an issue?

[quick cargo]

err sorta

if you intend to use asyncio then i would recommend getting to grips with the ideas it uses to work

e.g. co-operative multi-tasking

maybe look at https://realpython.com/async-io-python/

[opaque rivet]

big thanks 👍

[inland oak]

https://docs.djangoproject.com/en/3.2/howto/deployment/asgi/daphne/

https://docs.djangoproject.com/en/3.2/howto/deployment/

[native tide]

import socket

server= socket.socket()
server.setsockopt(socket.SOL_SOCKET,socket.SO_REUSEADDR,1)
server.bind(("0.0.0.0",8080))
server.listen()
cl,addr = server.accept()
print("Povezao se Klijent",addr)
zahtev =  cl.recv(5000).decode()

print(zahtev)

why am i getting a "'utf-8' codec can't decode byte 0xfc in position 8: invalid start byte" error

when the guy wich wrote the same code on yt worked perfectly

[thorn nexus]

I am trying to build HTML string with data returned from database like this:

res = get_object_or_404(MyApp, id=id)
html_text = ""
html_text += "<h1>" + res.field1 + "</h1>"

How can I clean res.field1 if it is not coming in a POST request? Is there a generic alternative to cleaned_data that I can apply?

[native tide]

i fixed it i had to type port 8000 btw why does that only work on that port

[upper trellis]

The Pallets team just released Flask 2.0! (and Werkzeug 2.0, Jinja 3.0, Click 8.0, ItsDangerous 2.0, and MarkupSafe 2.0) Spread the word on Twitter: https://twitter.com/PalletsTeam/status/1392266507296514048 and Reddit: https://www.reddit.com/r/Python/comments/nacc83/new_major_versions_of_flask_jinja_click_and/

Pallets Projects (@PalletsTeam)

New major versions of all the Pallets Projects have been released! Read our announcement and the changelogs, and try them out today! https://t.co/WJ8GB3uISW

Flask 2.0 🐦
Werkzeug 2.0 🧰
Jinja 3.0 ⛩️
Click 8.0 🐁
ItsDangerous 2.0 ⚔️
MarkupSafe 2.0 🛡️

Twitter · May 11, 2021, 11:52 PM

I'm taking a break now, it's been a long day, but I'll check for questions there and here tomorrow. 😄

[calm plume]

Thanks for working on that!

[kind steppe]

super neat stuff. async views and callbacks is great, and I'm a fan of the @app.post and @app.delete decorators as well

[indigo condor]

hi

[wispy quail]

@quick cargo see the async stuff above.

async def ... supported

[inland oak]

Awesome!

I guess we can throw Quart away now

[native tide]

    <button class="dropdown-button" onclick="dropTheMenu()">MORE ▼</button>
    <script>
      function dropTheMenu() {
        document.getElementsByClassName("dropdown-menu").style.display = "flex";
      }
    </script>

im trying to change the display to flex when someone clicks on the button.

[modern anchor]

I'm planning on doing a large project , so I decided to deploy backend services as microservices , because I wish to scale it in future so it will be easier if each section of backend is separate

Should I use docker or kubernetes ?

and I've never done a project with microservices , so should I host every microservices on a different server or just run multiple docker or kubernetes containers on a single server.

[nova nacelle]

it's a button!

[native tide]

idk

it doesn't work in a button?

[nova nacelle]

Probably no, use a div

[native tide]

ok

[median kraken]

.nav-menu .drop-down > a:after {
  content:"\ea96";
  font-family: 'Kanit', sans-serif;
  padding-left: 5px;
}

.bx-left-arrow-circle:before {
    content: "\ea96";

These are in 2 CSS files

<li class="drop-down"><a href="#"><span>Drop Down</span> <i class="bi bi-chevron-down"></i></a>
```HTML file^
https://cdn.discordapp.com/attachments/818357355304845362/841928938360012830/Screenshot_2021-05-12_at_12.14.57_PM.png
There, as you see, no image - the arrow does not appear
Any idea why?

[inland oak]

docker and kubernetes are used together, those are two levels of abstractions.
docker packs your single microservice application into container
while kubernetes allows 'orchestrating' containers to be deployed in multiple amounts to balance the load

docker would be recomended as minimum usually ;b
whatever if you would use kubernetes is up to you

[native tide]

doesn't work

[nova nacelle]

BRUHH use a div wus just an initial advise

[native tide]

:*{

[modern anchor]

So is kubernetes making a cluster out of my docker containers

I read we can deploy upto 8 docker containers on a single server, so what's the use of clustering them anyways

[inland oak]

for easier... scalability in width.
you can setup for example in kubernetes:
Make 4 replicas of my application A
and install service for distribution of traffic between four of them

I don't know a lot about it, but the point is with easy deploying

4 replicas can be auto deployed at the different machines

you aren't tied with your scenario to one machine

this is sort of opposite to scalability in height

[modern anchor]

Oh it's clear now , so it's for disturbuting traffic by making replicas

Thanks🙌

[inland oak]

this is one of examples

supposedly there can be other uses

I just know only this one)

[inland oak]

also it can be used perhaps as alternative to Ansible

for example your application needs additional services

Redis and e.t.c.

[indigo gale]

how can I get returned data from AsyncResult object in celery

[inland oak]

Probably kubernetes scenario can automatize stuff like that too

to deploy a whole pack of what your application is needing in terms of different containers

in one pod

and the pod is then replicated

[modern anchor]

oh ok so the DB is shared b/w them?

[inland oak]

that's up to you, how would you setup your db

if you want it to be shared, it will be shared

Kubernetes gives you full control to make whatever devops you wish

to scale your application in your way without dependency on your VPS/server provider

[modern anchor]

Ok 👍

[minor sedge]

does django does the same job as js ?

_ i know that sounds so silly _

[nimble epoch]

no, in which point?

[minor sedge]

js is web application afaik, what does django do ?

[nimble epoch]

js is for frontend and django backend

[minor sedge]

what about flask

[nimble epoch]

backend

[minor sedge]

is there any python library that is for front end ?

[nimble epoch]

im not sure

[minor sedge]

quart is backend as well right ?

[nimble epoch]

i dont know really

[minor sedge]

ok

[nimble epoch]

i think its for backend

[indigo gale]

how can I iterate a AsyncResult object from celery?

[severe folio]

Hello I am new to this channel and I have one question in wich Python module you work?

[hardy lotus]

I use flask... But many use django too! I don't have much idea of other python web development frameworks...

[nimble epoch]

which one you need help with?

[valid prairie]

I know Django, and a bit of Flask, FastAPI

[quasi relic]

yea , flask is the only for me currently, and still I dont know everythin about it yay

[inland oak]

Jinja comes by default in, most of frameworks, it can be easily used even without frameworks too. Discord bot with jinja is awesome.

Everything else from js you can attach too though

Not sure how goes situation if you need additional js libraries though

Probably npm should work

[inland oak]

Technically stuff like wtf/forms, unsure how it is called, provides easy pure python front end too

[calm plume]

Put the character in the html, not the css

The \ea9 part

As a general rule of thumb, content goes in html, while styling goes in css

[median kraken]

Yeah I got it

Thanks anyways

[solid goblet]

so yesterday i was asking about website hosting and creating a website
learned all the bad things to do 😄

anyone here use ionos? is this good to use?

[calm plume]

What do you want to do with the website?

Use a website builder, or just buy a domain?

[solid goblet]

well ionos offers both i guess

but, building a website with payment systems to use with a discord bot with premium features

[prisma nebula]

Do any one know how to link an HTML file to CSS file in visual studio code

[calm plume]

Do you mean import a css file into an html file?

[prisma nebula]

yeah

[calm plume]

In your <head>, do <link rel="stylesheet" type="text/css" href="path to css file">

For example, ```html
<head>
<link rel="stylesheet" type="text/css" href="index.css">
</head>

[prisma nebula]

Thanks for helping

[inland oak]

Giggles. Dunno how much efficient this writing

but...

with simple js

<script>
    fetch('/server').then(function (response) {
        // The API call was successful!
        return response.text();
    }).then(function (html) {
        // This is the HTML from our response as a text string
        document.getElementById("demo").innerHTML = html;
        console.log(html);
    }).catch(function (err) {
        // There was an error
        console.warn('Something went wrong.', err);
    });
</script>

<p id="demo"></p>

I could use my django

to render stuff while getting extra stuff from API endpoints!

it has potential for a smooth front I hope

I could try putting inside API stuff, pre rendered by Jinja template!

it should make my front logic quite simple

[dry arch]

I have a FastAPI project with the follow structure:

Project
- app/
-- __init__.py
-- main.py
-- database/
--- __init__.py
--- db.py
--- models.py

Inside main.py I want to import the models from models.py as well as some functions from db.py.

When trying to import like this:
from app.database.db import functionA, functionB I get an error no module named "app" . I've tried some other ways of import as well but I don't really understand how the packages/modules in python work when nested like this.

Can someone help me with this/help me understand so I can start doing it correctly?

[opaque rivet]

client-side rendering will hurt your application's SEO badly.

[inland oak]

I am afraid that, long re render will hurt more

my web site has one large table of things
based on selection of one of strings
it needs rerendering quickly small sticky table near the bottom

and well... the general goal of the web site is making quick navigation through the database of tables

quick rerender with javascript should make things much nicer experience for users, than full re render

[opaque rivet]

yeah - that's right, but are you re-rendering the whole webpage or just modifying a DOM element?

[inland oak]

with javascript? just modifying DOM element at the bottom 😉

[opaque rivet]

ah gotcha. I thought you were moving from server-side rendering to client-side

[inland oak]

actually this is interesting to try as well

perhaps rendering the main table with JS too

I'll have at my server side it fully prepared, pre-rendered with Jinja

leaving at client side only to pull it

I'll think about it later, for now I'll pull with JS only secondary table

which I could not be rendering smoothly without JS at all

[opaque rivet]

agreed, that's why frameworks like react have all of the appeal 🙂

[inland oak]

I am not ready for React yet I think

[quick cargo]

react is very easy

[inland oak]

learning how to do this stuff semi manually should be better experience for me for now perhaps I think

[quick cargo]

if you can read a little bit of JS and write a function in JS you can do react

[lofty sigil]

Do browsers automatically set X-CSRF-TOKEN if we just supply the csrf-token as a cookie?

I am using flask and flask_jwt_extended seems to set some csrf token cookies which it expects as headers to validate further requests.

[opaque rivet]

yeah React is easy, most of the learning will be done learning third party libs. like redux etc.

[inland oak]

I did not try React yet
but I already learned how to deploy it%

our front ender did not know how

[opaque rivet]

no, the browser doesn't, but some popular libraries like axios automatically add it as a header if its in the cookies (it needs to be named specifically as they expect though)

[lofty sigil]

Ooh, Thx!

I was using post man and dying to understand why it was happening 😓

[inland oak]

Considering that this current project I do mostly out of learning.
I'll probably first will make JS/Jinja render
and re learn how to that in React after that

it will give chance to compare which way is easier

[opaque rivet]

well if your project needs interactivity and a lot of JS, then React will always be easier. You don't get state management, hooks etc. that react offers with plain JS (well, you do, but it's a long setup).

i recommend it highly

[inland oak]

If I'll be able keeping my code dry as it is
I'll have only two JS functions.

1. Pull main table of the current section
2. Pull secondary table based on selected row in the first table

it should be managable without react

[opaque rivet]

yeah definitely

[native tide]

How to make stateless files in NodeJS like with PHP which is deleted at the end of each request without creating caching problems via modules or exports ?

[quick cargo]

errr you sorta cant

PHP and NodeJS differ in their execution alot

and Node and the JS system in general is not designed to do that

[native tide]

So NodeJS is useless then?

There are other programming languages that have the same logic as PHP ?

[calm plume]

In your case, Node.js may be useless, yes.

[quick cargo]

if this is for a static site then yes

[native tide]

At the beginning, I wanted to make a site in PHP, the problem with PHP is that the types have problems and that there is no asynchronous and the calculation in PHP is slow

I went to NodeJS, I feel trapped

I don't know if Rust / Go will have the same problem if ?

[calm plume]

If you want to use Node.js, you should use a JS frontend usually.

[quick cargo]

well

[native tide]

I have the impression that doing a simple MVC in NodeJS is very complex

in PHP it becomes easier but PHP has many problems

[calm plume]

PHP and Node are both used for backend, so there's really no point in using both (unless I'm confusing PHP with something else)

[quick cargo]

You might wanna explain what your goal is here a bit better

Rust, Python, Go, NodeJS etc... can all do the same thing

[native tide]

My goal is to make a simple dynamic site with NodeJS

I came here because I had a problem with the requests since it keeps cached via the requires of the old request

If there is a new request, it will be impossible to retrieve the current request since I stored it in a class via export.request = request or module.exports = request

I have to do a request.reset() at the end of each request to empty the attribute in the Request class

I don't know, if there will be a problem when I have a lot of requests at the same time

[quick cargo]

I just wouldnt do that

[native tide]

So if making a simple site in NodeJS is complex, then making an API / API Rest in NodeJS is complex too

[calm plume]

APIs can be (relatively) easily made using express

[quick cargo]

Well if you want some global var stuff (which you really shouldnt do) you might wanna consider Flask with python

but generally, you avoid and shouldnt use globals as much as possible unless they're constant

the reason PHP can get away with the global and changing state is because it's directly synchronous so it can correctly handle the global state without invaliding it

with asynchronous logic its a very very dangerous game

[native tide]

I do not want to use a framework whatever the programming language used

I wish to do everything since the native language

In some cases, I need to do Asychrone, Pipeline, Stream

PHP is a bad programming language, it's cruelly lacking structure, other languages have good structures

[quick cargo]

you want to write all the framework stuff yourself?

[calm plume]

If you dislike PHP, why are you using it?

[native tide]

Yes I want to use without framework myself

I no longer use PHP, it was at first to test the possibilities of this language, I selected negative points when I want to do things

[calm plume]

So which language are you doing it in then?

[quick cargo]

Do you want to use it for production?

[native tide]

After, I'm a big fan of Python, the same python is slower than php, I'm disappointed

[quick cargo]

if yes, I sorta gotta recommend against it

[quick cargo]

In the end once everything is made everything runs pretty much the same speed

cuz like most stuff on the web, the slowest thing is the IO not the language

[calm plume]

Python is plenty fast enough for most things. Unless you're doing something that needs speed, then Python should be good enough.

[native tide]

Yes it's for production

[quick cargo]

then i can only recommend against making the framework and socket interactions yourself really

Production grade HTTP servers and frameworks are HARD

there is so much logic and behavior as well as security you need to get correct in order for it to be production ready

[native tide]

If language plays an important role, for algorithms

[calm plume]

May I ask why you don't want to use frameworks/packages besides the core language?

[quick cargo]

trust me im on iteration 3 of my webserver and framework just to correctly support HTTP/1 + be secure + be efficient

[native tide]

I hated the frameworks, it's bad programmed, their programmed way scares, too much calculation for nothing, too much line of code for nothing, no structure etc etc, "we can not make the generality only by making case by case and not of the generality to make the case by case "

[calm plume]

Express is a very good framework

If you want to make an API

[native tide]

I wish to create my own stuff, it's safer in terms of performance, structure, logical

[quick cargo]

I can guarantee that the existing frameworks that have existed for a while, will be better coded than what you can make, not to insult your coding ability but its just they've existed for longer, have hundreds of maintainers, security patches and thousands of tests.

As for performance it's really not

the language performance or framework execution performance in reality means almost nothing when everything is setup because IO takes time, databases take time etc...

[calm plume]

There's just some things that can come from hundreds of people working on a project that one person simply can't do.

[native tide]

Try to make algorithms and you will see a big difference in terms of performance, try to do less code line and you will see

If we use frameworks / solutions all done, we can never understand the real problem

[quick cargo]

Sure, but algorithms are alot diffrent to production grade frameworks lol

and also algorithms are generally CPU bound problems

not IO bound

if you have a server that can handle say 7,000 req/sec (doesnt sound like much) you get hundreds of BILLIONS of requests a year with that

[native tide]

I have no problem with the CPU or anything, my only problem is the language that is limited to keep information and is eliminated at each end of the query, a bit like PHP logic, that's Well, I'm trying to do this kind of logic

[quick cargo]

Well dont if you want it to be asynchronous

because that's how you run into state invalidation and race conditions

as a warning though Premature optimization will be the death of your project if you dont think about other things first

because Fast != good, maintainable and secure

[native tide]

So the number of request per second is a big debate, I managed to test up to about 500000 queries / seconds

Asynchronous perhaps interesting for IO

[quick cargo]

okay sure

but you wont ever get that in reality

and if your db gets hit that much then your setup is wrong

even 7,000 req/sec equates to billions of requests over a year

which is the size and scale of some of the largests websites in the world that run thousands of servers

[native tide]

I do not optimize premature, I'm testing, I do my features and I see how I can improve it

For databases, there are replicas as well as other solution, after all depends on the need

[quick cargo]

Sounds like its premature optimizations to me, but hey sure your site might be Wikipedia level big with thousands of servers and your databases are so hyper optimized that they take nanoseconds to get data and the framework and language is absolutely the bottleneck

[native tide]

What worries me in the web is that the pages are slow and the weight of the pages are heavy, we are on average to more than 2 MB per site page, there is a big problem

[quick cargo]

and guess what :P thats nothing to do with the language or framework

and web pages will only continue to get bigger

because sticking static apps like React and Vue which client side render and can be served globally on CDNs is considerably easier than server side rendering and scaling and browsers are getting quicker to render them

New tech like webrender makes most CSS performance tricks obsolete now lol

[calm plume]

If your pages are more that 2mb, that sounds like a problem, unless you're in a special scenario

[quick cargo]

oh yeah

most pages are not 2MB though

maybe in total with every page loaded with assets

[native tide]

I quote 2 MB who is an average, I generalize? so there are advantages and disadvantages when using frameworks / languages

[calm plume]

I still don't see the disadvantage to using a framework

[native tide]

I do not have a bottleneck, since you talk about it

[quick cargo]

saying that even with that my entire webpage which is a all in one site transfers the entire page in fractions of seconds with lazy loading with kb chunks

[native tide]

Your pages are compressed ?

[quick cargo]

pfft no

[calm plume]

Lazy loading is super useful

[native tide]

that's a first problem

[quick cargo]

how so? We dont need it, and for the size of compression its not worth it to us or the user

It takes < 100ms to load everything

on a site that is very much not optimised

[native tide]

For a blog, personal site, we can not care about performance, however for a professional site it's important to be efficient and optimized

[quick cargo]

then use a professional grade framework dont try make your own that will be unbattle tested, lacking in certain areas etc...

If our framework on clojure which runs at the same speed at python can handle the some 2.5 billion row + database and millions of monthly requests

I dont think the framework matters

and if you still dont believe that look at some of the big sites like Instagram, Discord etc... that still use Django and Flask which even in python are considered 'slow'

cuz in reality like i say

the framework isnt the slowest thing

[native tide]

I simply adapt to my problem, it's not really a framework that I'm trying to do

I have already used frameworks, I am very disappointed with the way it is programmed,

Frameworks pollute the web and computer when it's badly designed

[quick cargo]

So you're basing your opinion of all language's ecosystems and frameworks on one other language

(even though those frameworks still power some of the largest sites in the world and have been battle tested through most of the web's life)

[calm plume]

And you're saying you can do better than something that hundreds of people that have contributed to?

If so, go right ahead.

[warped heart]

anybody know how to fix or disable STRICT MIME TYPE CHECKING on django. It doesnt allow me to apply any CSS Style sheets or use any .js files

and yes in all my tags i use type='text/css' etc.

[native tide]

Honestly, for years that I'm looking for simple and innovative solutions and it works, I do not finish everything but it's good

I am convinced that my solutions will work, it remains for me to pay the stairless query story as php logic

[quick cargo]

If this is coming from the browser which i assume it is, then it's an issue with how you're loading them / behaving with the HTML rather than the server

can you share the meta tag block and the error?

[burnt raptor]

Hi All, I have developed a game using pygame. How can I host it on a website? I am planning to use Heroku.

[quick cargo]

you cant

Websites are a whole other ecosystem to native type games like pygame

whole other ballgame

if you mean just like, make a website for it and people download the code then yes its possible

[burnt raptor]

I was looking at libraries like pyjsdl.. would it work?

any other alternatives instead of pygame to make it run on website?

[warped heart]

error from browser console

Refused to apply style from 'http://localhost:63342/static/index_assets/vendor/bootstrap/css/bootstrap.min.css' because its MIME type ('text/html') is not a supported stylesheet MIME type, and strict MIME checking is enabled.

html tag

<link href="/static/index_assets/vendor/bootstrap/css/bootstrap.min.css" type="text/css">

django

return render(request, 'index.html')

## render = django.shortcuts.render

django responds with 200 so i assume its just the browser

[quick cargo]

its the browser yeah

can you send the full meta tag block

/ where is the html tag

[quick cargo]

generally no

unless you want to re-write it all in browser JS or explore the wacky world of web assembly stuff with another language like C, C++, Rust, Go etc...

Python doesnt compile to wasm though

[warped heart]

<head>
  <script data-ad-client="ca-pub-2387817887649725" async src="https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js"></script>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
  <script async src="https://arc.io/widget.min.js#orJQqvxn"></script>
  <meta name="theme-color" content="#f54646">
    
  <title>Home</title>
  <link href="/static/index_assets/vendor/bootstrap/css/bootstrap.min.css" type="text/css">
  <link href="https://fonts.googleapis.com/css?family=Catamaran:100,200,300,400,500,600,700,800,900" type="text/css">
  <link href="https://fonts.googleapis.com/css?family=Lato:100,100i,300,300i,400,400i,700,700i,900,900i" type="text/css">
  <link href="/static/index_assets/css/one-page-wonder.min.css" type="text/css">

</head>

[burnt raptor]

thank you

[quick cargo]

Hmm interesting

[burnt raptor]

Can I install pygame as android app may be?

[quick cargo]

not really

you want something like Kivy for that

[warped heart]

it loads everything fine with debug set as True

[quick cargo]

oh wait

when you set it to false

[warped heart]

yes then stuff breaks

[quick cargo]

you are using something like nginx to serve the static stuff dont you?

not just use the debug server

[calm plume]

If what you're doing works, is there a question you have?

[warped heart]

not as of now but in the future once its done yes

[quick cargo]

ah well

when Django is in production mode (DEBUG=False)

it doesnt serve static content

because in production you a) shouldnt use the debug server to run django and b) python shouldnt serve the static files

[warped heart]

any reason to that?

[quick cargo]

performance and security mostly

[warped heart]

o alr

thanks

[quick cargo]

basically i'd keep to using Debug mode till you're ready to deploy

then collect static

then stick behind a reverse proxy and let it serve the content

take a look at corey shafer's videos on Django and deploying it 😉 Should work a treat

[warped heart]

thanks

will do

[native tide]

I separated the operation after I gather everything to see how it will react

It is this query story that does not delete in the end and can be mixed with the old and new request of another user, the problem is complex,

I am trying to do the same functioning of the requests that php that there I find interesting

[quick cargo]

(and you're trying to do that in a asynchronous runtime where the state cannot be guaranteed to be in the correct context for each request)

just as a addition to that note :P

[meager sand]

How do you feel about WhiteNoise for serving static content? It's written in Python and the docs explain why that's generally ok: http://whitenoise.evans.io/en/stable/#isn-t-serving-static-files-from-python-horribly-inefficient

[native tide]

According to my logic, there is very little asynchronous in my code,

It seems to me that this is not a better resset solution the value of the class instance variable that has been "required / export" at each request of the server

I am obliged to give (Req, Res) to all my functions even when I think it's useless in some cases

[meager sand]

I'm now using Traefik for reverse proxy & ssl termination instead of nginx, but traefik doesn't serve static files

while it would be possible to have nginx behind traefik I guess but idk if that makes sense

whitenoise seems nice, on the other hand it's not asgi-ready

(but should be soon)

[quick cargo]

just because your code maybe doesnt look async, doesnt mean it isnt, you're in the JS world now. Everything is async and there are 3 different types of core executions

Welcome to the JS event loop setup :P

whitenoise seems alright

though it's not something i would still use just because Nginx is just so hyper optimised

not that python cant do as well, but unless it's using os.sendfile it'll struggle

[quick cargo]

Have i introduced you to my good friend Kong

[meager sand]

I haven't heard of it

[quick cargo]

Ditch traefik return to monke

Kong is basically a framework build around Nginx

[meager sand]

I wanted to ask whether it would make sense to have nginx behind traefik for static content, I'm such a web noob that I cannot tell

[quick cargo]

so nginx does all the heavy lifting but kong gives you all the pro's of traefik

Personally i prefer kong because it requires less nonsense configuration like traefik and it doesnt try shove paid features all the time

[native tide]

That's the problem, once the query arrives, I recover the query object that will be stored in a class that is supposed to be empty at each request (same principle as php), I block on that

So if multiple requests arrive simultaneously, I risk having a problem I think

[quick cargo]

has a nice open source web ui aswell

[quick cargo]

so dont try behave synchronous in a asynchronous system. If you want my advise; If you're gonna try do stuff 'better' than the existing frameworks atleast obide by the language semantics and dont try to work against them

[meager sand]

the immediate downside to konga is that I'm googling for information and getting pictures of monkeys 😔

[quick cargo]

aha

google Kong Gateway and Konga Dashboard i think

[native tide]

Thank you for your advice, however I am allergic to the frameworks xD

So how to use a JavaScript file in nodejs without being cached by the "Require" ?

[meager sand]

on the other hand traefik resolves to the pesky gopher

so I guess it's not much better on that front

[quick cargo]

So much for the trying to be better ig

[quick cargo]

https://konghq.com/community/ and https://github.com/pantsel/konga

[meager sand]

thanks 🙏

[quick cargo]

By far the nicest thing is you dont have to deal with traefik's setup of using labels etc...

you can live reload extensions, built in proxy cache etc...

[meager sand]

I don't know, I found traefik very pleasant to work with

[meager sand]

but I deploy to kubernetes using a pre-made helm chart so maybe that's why

[quick cargo]

I'd definitely recommend giving Kong a go 😅

Personally i prefer it, I know others will swear by traefik

but generally a avoid software that tries to pressure you into their cloud enterprise setup for stuff that doesnt need it

[meager sand]

yeah I probably will I haven't touched web much in the past so trying loads of different things is beneficial to me right now anyway

if only for the purposes of learning

[quick cargo]

tis the best way to learn

try everything

[meager sand]

😌

[quick cargo]

now back to my UDP hell lul

[native tide]

Otherwise I have an idea, how do you make to reduce the request information from another file without going through arguments (req, res) ?

[quick cargo]

do it though arguments

they're free

use them

[native tide]

Okay so that I have to go to all my functions (Req & Res) by avoiding stored in a Class that can be reused later then

[opaque rivet]

what language is that?

[quick cargo]

rust

[native tide]

hello, is twisted still widely used or was it replaced by something in recent years?

My game dev book from 2004 recommends twisted

[violet briar]

I got a question about flask, when the user tries to login and the server finds that their input info is wrong, how do I make the server tell them their info was wrong, how do I make the server push a label into the HTML document saying "invalid login info"

[wooden ruin]

are you using any authentication libraries, or are you doing this all by hand?

[violet briar]

doing all of it by hand

oh, wait, I found a way, I make a variable called "wrong info", if the login information is wrong that variable gets set to True and gets passed to render template, so jinga has an if statement block with the "wrong login information" label that gets activated if the variable is true

[terse vapor]

use the username and password from db, then use

if form.validate_on_submit():
        user = User.query.filter_by(name=form.name.data).first()
        if user and bcrypt.check_password_hash(user.password, form.password.data):
            login_user(user, remember=form.remember.data)```
to check if the username and password, next, if the input is incorrect, use "else:"

oh, nvm

[prisma ferry]

hey so im making a discord login for my website

and i have some issues with oauth2

it keeps giving me a keyerror for some reason

OAUTH2_CLIENT_ID = os.environ['839258071439900733']
  File "D:\Python 3.9.1\lib\os.py", line 679, in __getitem__
    raise KeyError(key) from None
KeyError: '839258071439900733'

thats the error

[inland oak]

There is function flash mentioned in flask mega tutorial. It can flash messages to user in such situations

[violet briar]

I don't wanna flash messages, I wanna insert an HTML element, because I want it to be styled with CSS

[inland oak]

It is styled too

[violet briar]

how do I style it?

[inland oak]

Question regarding React

we have a project already running with npm, build, serve, package.json. It is more or less half backed React project. Full of different npm libraries.
How much of hustle would be attaching webpack to it at this stage?

I am unsure if it would take just few minutes or... it would take much greater time

[timber glacier]

Its easier to force validation into the form than trying to flash it. Are you using a form library like flaskform?

    email = StringField("Email", validators=[DataRequired(), Email()])
    password = PasswordField("Password", validators=[DataRequired()])
    remember = BooleanField("Remember me", default=False)
    submit = SubmitField("Login")```

[opal basalt]

could i ask a question for research purposes based on wordpress?

[vagrant owl]

Guys, how do I create some backend python script that checks the formatting(Grammar) of YAML files?

[inland oak]

perhaps better just to find some library that checks for you

https://stackoverflow.com/questions/3262569/validating-a-yaml-document-in-python

[hoary brook]

I implemented this directly in my HTML using the builtin form errors.

If it has any errors, it will create the form field with the invalid class which I use to add a red border, as well as show the error message below the form field.

I use this since it is nicer for the user to see where the error is instead of flashing everything in one big message at the top or bottom of the screen.

In my case it looks like this:

[opaque rivet]

What's the use case of micro-services? In reality, are micro-services just small API sections of a monolithic web-app?

[nimble epoch]

probably cause they are just more simple

[opaque rivet]

I'd say the exact opposite.

[inland oak]

more or less correct

and due to them being splitted into separated small API sections...

it can be more easily testable/developed and e.tc.

[nimble epoch]

can they be more flexable

[inland oak]

it can make your logic also more DRY

due to one application making it good

while other apps use only this one for that

[opaque rivet]

Yeah I'm looking to make micro-services for my next project, I could even incorporate them into my own. I'm just wondering how to go about the devops side of it, how do I start?

[nimble epoch]

sheesh should i move to flask

[inland oak]

I saw nice O'Reilly books about it, going to read it.
But the first question you should ask... what are your developing

miscroservices model is similar to db models in how we think it should be

when we think about required db models in SQL, we think about interactions between them with foreign keys

microservices model is more or less same in this case

you need to think what should be separated, why it would be better separated, and how your applications going to communicate between each other

[vagrant owl]

Okay okay. I will check this out bro. Thanks

[inland oak]

the most often case: we separate web site to backend and front end applications ;b

[opaque rivet]

Well, I've got one monolithic app for data retrieval & visualization. I want to add ML to my project, and then a seperate API for my ML model.

I wanted to move to micro-services to decouple the application and allow for more isolated testing. I feel having everything in one monolith will have less effective testing.

[inland oak]

how many developers do you have on your project?

[opaque rivet]

I'm solo, it's just personal

[inland oak]

not sure if there would be real proffit from microservices then
it is supposed to be good when you have more than one developer

it can bring you good with enforcing better application separation by design though
it can help you if you struggle to structurize your application with separated logic from different sections.

i think, if you aren't having struggle to refactor your application/writing tests on your own, then you can go without microservices

but as I said I did not read the book yet

so I can't say for sure

it is just looking to me like overkill to make microservices when you are solo developer

microservices can be also used... as better way to scale your application

it can be also good then for your even solo usage

think for yourself, if you need some part of your application section scaled independently from each other

[opaque rivet]

Well, I have been refactoring a lot recently and although now it's more usable, once I add my ML models and API it's going to be large...

So, if I have my django app serving as my backend - and I want to add a micro service for a frontend feature. Should I make API calls from my backend or my frontend?

Is it normal to have one monolithic app connecting all the micro-services?

[inland oak]

if you feel like your app would be really large.
then go for microservices I guess

another point of microservices to lessen load on your cognitive resources

the less you can keep in mind about one application, then better

[opaque rivet]

But like... should my monolithic app be a "centre" between my micro-services?

I need to read a book on it, idk if I deploy my micro-services if i also need different domains for each API

[inland oak]

if you separate to micro services, why would you have monolithic app?

your each microservice does only small part job

and all results outputed to your front end site

there would be nothing monolitic then

you are usually having monolith or microservices

not both%

although nothing forbids from having a mix of them

[native tide]

Has anyone worked with Django & Hotwire, and could share experiences

[opaque rivet]

@inland oak yeah, I mean if I have my microservices I need to connect them somehow, so would I have one server handling that?

Also each microservice in this case would be a seperate django server? Or can they all be on the same server

Technically, aren't seperate django apps microservices? Or do they have to be on different servers? (So if an exception is raised, only the one server will fail)

[vestal hound]

not if you host them in the same project

the idea of a microservice

is that it can be stood up and scaled independently

[opaque rivet]

@vestal hound so each project has to be deployed seperately?

[vestal hound]

yes

and be independent

okay example

Insta

you could have an image service and a chat service

image service takes care of uploading and viewing images

chat service takes care of chat

so let's say

people happen to be talking a LOT more today

you can independently scale up the number of chat microservice instances

[opaque rivet]

I see... so will the frontend make requests to each microservices or will there be a single server which orchestrates all of the microservices? I'm thinking the 1st option.

[vestal hound]

it depends

the latter

is something

called

BFF

backend for frontend

which is a p common pattern

in cases where your app is simple

or the microservices exist only for your frontend

a BFF is unnecessary

that's more appropriate

for situations where there are multiple frontends

and multiple microservices

and each frontend consumes a subset of the microservices

so an intermediary layer makes things more convenient

that also allows you to add, for example

default functionality in cases where individual microservices are down

that varies between frontends

[opaque rivet]

Yeah, thanks for the know-how. I have a django backend for react frontend, and I was thinking to have that server orchestrate between the microservices.

Do you think I should learn docker before diving into this?

[inland oak]

docker is usually must have for microservices

containerization helps for easier deployment and dependency control

[vestal hound]

some form of containerisation

[inland oak]

you can go without it, but it would be just less comfortable

[vestal hound]

they all interact.

one of the big selling points of a microservice

is that you can scale it up

stateless containers really help with that

so on top of Docker or whatever you choose

you have a container orchestrator

[inland oak]

docker compose for example

the most easiest
to build it all together

[vestal hound]

having all this managed for you

is really nice

e.g.

EKS

or GKE

(AWS Elastic K8s Service/Google k8s Engine)

[native tide]

Can you help me to find out how can I use python instead of PHP.
So I have a fully working html, css, JavaScript site and I want to use python to connect for sql.
Thanks

[nimble epoch]

You can use django and django models or flask and flask_sqlalchemy

[native tide]

thanks I will try

[nimble epoch]

yw

[distant canopy]

Hii I am new to the server

andd dose anyone know how to make a cname

[sleek oar]

Is anyone aware of where to find part-time volunteer opportunities for working on Django sites. I want to get back into Python and Django specifically.

[proud linden]

Traceback (most recent call last):
  File "main.py", line 3, in <module>
    app - Flask(__name__)
NameError: name 'app' is not defined```

[nimble epoch]

thats clear bro

[foggy bramble]

Hello everyone, I'm learning authentication with token in django rest framework.

I wrote the code and it works when I send token in the header.
But how can i automate this process?
Like once the user logs in, token should be sent in each request

[opaque rivet]

@vestal hound so in production, are each of the containers on seperate VMs? So you can have more/less VMs allowing for more scaling?

How would I setup ci/cd for different microservices, should each be in a different repo or can I have different ci/cd scripts for each branch?

@foggy bramble use JS to attach the token cookie to each request

[foggy bramble]

Does that mean frontend will handle this

[nimble epoch]

first save token to localstorage

[foggy bramble]

Do you mean the computer of the user?

[nimble epoch]

yyeah i think

[foggy bramble]

Do you have any sample code showing implementation of that..?

[nimble epoch]

ok you using frontend?

[foggy bramble]

Because any tutorial i found on the internet is just showing how to create token and send the token in the head using postman.... But what I'm thinking is that users won't use postman and enter the token each time, so we need to automate

[foggy bramble]

Nope I'm interested in backend

[nimble epoch]

so i dont think that you need token auth

[foggy bramble]

Whatchu mean?

[nimble epoch]

you use that user token in frontend to show that a user is logged in. i dont say that you cant just say that you dont need

[opaque rivet]

@foggy bramble yes - you need to set a token cookie and attach that to each header. Do not store it in local storage, as localstorage data is only available on the clientside (and doesn't have expiry dates).

@nimble epoch Token auth / Session auth - it all uses tokens saved in cookies. I'm not sure what your alternative is.

[foggy bramble]

I can't find any tutorial on implementation of this

[nimble epoch]

i mean rest framework token that rest framework sets it to each user model

[nimble epoch]

when you send request to that url a username and password is needed when you enter them correctly itll drop the token and you can get then token and save it somewhere

and of course you can use sessionStorage to save it and itll get expired after a time

oh nicky i just got what you say yeah he can use sessionStorage

[opaque rivet]

No, store it in cookies. Not localstorage or session storage. These are only accessible by the clientside, but the server may want to change these cookies with a Set-Cookie header.

[nimble epoch]

oh yeah you mean django cookies for example?

[opaque rivet]

I literally mean cookies.

[nimble epoch]

of course

[inland oak]

I have a div container, which contains bootstrap table

I wish to receive result....

is it possible somehow to make them diving screen in three parts?

Table main has hundreds of rows
Table 3 has small amount of content to fill itself fully
Table 2 has content to fill twice of its size

looking for some tutorial for that

[nimble epoch]

why dont you use grids?

[inland oak]

well, it is the answer I was looking for

googled

[opaque rivet]

Grid or flexbox

[inland oak]

Thanks

[nimble epoch]

then use table in eachone

[inland oak]

greed is good

[nimble epoch]

i mean if you want to have that table shape you can use table inside

[inland oak]

I'll need to clarify end result

a moment

green shows three vertical scroolbars

which I would need for each table

grid should probably suit my case, right?

[grizzled trellis]

I have just completed Django
Made a Portfolio Page, Blog App, Polling App, Forms.
Can you guys suggest me what project should i do next?
I want to do a Big project that can be added in my resume

[nimble epoch]

yeah

[inland oak]

great

thanks

good to know the direction of my road

[nimble epoch]

yw yeahhh

[nimble epoch]

i think a good model design is a kinda portfolio

am i right?

like Follow system, Like, Comment

[grizzled trellis]

You mean a social media app?

[nimble epoch]

of course

and that eazy

[grizzled trellis]

Okay i will try it

Thank you

[nimble epoch]

yeah yw

[opaque rivet]

If I want to port my current django app to docker, I use a redis installation on linux.

As well as installing python dependencies, am I able to install redis with apt?

[nimble epoch]

i searched and found this ...https://www.digitalocean.com/community/tutorials/how-to-install-and-secure-redis-on-ubuntu-18-04 is it useful?

[opaque rivet]

Will my redis / postgres DBs be in a different docker container to my django container?

[calm plume]

They can be in the same one

[inland oak]

you can do both, in different or same

[calm plume]

For example, PyDis site has both the Django site and the postgres db in the same container

[opaque rivet]

Ah okay. If I have django and postgres in seperate dbs, I'm a bit confused on how they can communicate - since they're in different VMs essentially?

[inland oak]

I have somewhere example of docker compose scenario

which has Django, Regis, Postgres in different containers

[opaque rivet]

@inland oak so you have 4 different docker files?

3*

[inland oak]

version: '3'

services: 
    django:
        build: .
        container_name: django_service
        command: >
            bash -c "python manage.py makemigrations
            && python manage.py migrate
            && python manage.py runserver 0.0.0.0:8000"
        volumes: 
            - .:/app/
        ports:
            - 8000:8000
        environment: 
            - DEBUG=1
            - DJANGO_ALLOWED_HOSTS=localhost 127.0.0.1
            - CELERY_BROKER=redis://redis:6379/0
            - CELERY_BACKEND=redis://redis:6379/0
        depends_on: 
            - redis
    celery-worker:
        build: .
        container_name: celery_worker
        command: celery -A fampay_youtube worker -l INFO
        volumes: 
            - .:/app/
        environment: 
            - DEBUG=1
            - DJANGO_ALLOWED_HOSTS=localhost 127.0.0.1
            - CELERY_BROKER=redis://redis:6379/0
            - CELERY_BACKEND=redis://redis:6379/0
        depends_on: 
            - django
            - redis
    celery-beat:
        build: .
        container_name: celery_beat
        command: celery -A fampay_youtube beat -l INFO
        volumes: 
            - .:/app/
        environment: 
            - DEBUG=1
            - DJANGO_ALLOWED_HOSTS=localhost 127.0.0.1
            - CELERY_BROKER=redis://redis:6379/0
            - CELERY_BACKEND=redis://redis:6379/0
        depends_on: 
            - django
            - celery-worker
            - redis
    redis:
        image: "redis:alpine"

it is not mine, but I hope one day to use it

perhaps it can be useful for you too

mm yeah, it is Django, and Celery/Redis actually compose scenario

[inland oak]

tbh, not sure how it works yet. but I think it should be having 4 docker files (except redis, which uses prebuilt image)

each section has build, which I suppose makes another container

and each section is launches different container as far as I can read

[opaque rivet]

Oh so, a docker file is a docker image? And within that image you can have different containers?

[inland oak]

docker file is scenario to build docker image
converting your source code project to image ;b

[calm plume]

A Dockerfile is a "recipe" for building Docker images

[opaque rivet]

Alright, I'll watch some guides on it to understand it better

[inland oak]

just usage of docker container
makes your application being easy to run on any machine with Docker, regardless to its OS version

because it wraps your application with specific OS inside of the container

helps for easy installing to multiple machines with different OSes

[calm plume]

Programming with Mosh has a great video on Docker

A language agnostic one

https://www.youtube.com/watch?v=pTFZFxd4hOI

[opaque rivet]

@calm plume do you know how I'd use docker in a ci/cd pipeline? Would I be creating a new container on each deploy?

[calm plume]

I haven't done it myself, but I think you would generate a new container from the image

Or maybe you could use docker-compose

https://github.com/python-discord/site/blob/main/.github/workflows/build.yaml#L11-L58 Here's an example of a build

[oblique stump]

which yt channel and website would be perfect to learn django? any suggestions? I am new here and I'm looking forward to learn web development

[calm plume]

The official Django tutorial is amazing. And I think Corey Schafer has a video series on Django.

[winter pivot]

Hello im using django rest framework and react. I have an Authorization and application/json in the react headers but it returns a 403 unauthorized when connecting to server . Why is this? when i test it in postman, it works

[inland oak]

http://80.78.247.245/

I tried making grid

but it is not limiting my screen

[terse vapor]

its pretty good on my screen

[inland oak]

click Commodity or Ship

Tables are much bigger than grid is defined

[calm plume]

Looks like this to me

[winter pivot]

anyone here knows react with drf?

[calm plume]

Oh the tables

[inland oak]

it is too big%

I hoped to limit it to grid

[calm plume]

You can stick grid inside a container

That's a certain width

[inland oak]

I'll probably rethink what I do with loading speed though

[terse vapor]

The title is also a bit too large

[terse vapor]

nvm, my network problem, lol

[inland oak]

eh, something got just broken)

all right, trying to limit size of container containing grid then

[oblique stump]

Has anyone watched django tutorial of yt channel called Clever Programmer?

if you have what would you rate on the scale of 10?

[inland oak]

limited size of grid with
css max-width, max-length
but table just ignores the grid size

I do something wrong probably with table?

[calm plume]

Stick a container around the table then

[inland oak]

is it possible to fit the table into grid, and for table having its own scroolbar inside?

[calm plume]

Or nest the table inside the grid

[inland oak]

<div class="grid-container">
    <div class="item1">

        <p id="main">This is Main Table</p>
    </div>
    <div class="item2">
    </div>
    <div class="item3">
        <p id="secondary">This is Second Table</p>
        Footer
    </div>
</div>

I already stick grid around table%

[calm plume]

That <div> looks off

[inland oak]

the table is <p id="main"></p>

[calm plume]

The top one

[inland oak]

well, it was just bad copy

.item1 {
    grid-area: main;
}

.item2 {
    grid-area: right;
}

.item3 {
    grid-area: footer;
}

.grid-container {
    display: grid;
    grid-template-areas:
        'main main main main right right'
        'main main main main right right'
        'footer footer footer footer footer footer';
    grid-gap: 10px;
    background-color: #2196F3;
    padding: 10px;
}

.grid-container>div {
    background-color: rgba(255, 255, 255, 0.8);
    text-align: center;
    padding: 20px 0;
    font-size: 30px;
}

I'll try to start with stripping table from its style, perhaps they are the issue

[inland oak]

reverted almost everything
http://80.78.247.245/

hmm, may be somewhere I could find working example

[opaque rivet]

hmm, you didn't specify any grid-template-rows or grid-template-columns. In my opinion, I think it's much easier to use flexbox:

<div className="flexbox-column">
  <div className="flexbox-row">
    <!-- These two items are next to eachother. Specify their relative widths. -->
    <div className="item-1"></div>
    <div className="item-2"></div>
  </div>
  <!-- This item is below item 1 and two and takes 100% width -->
  <div className="item-3"></div>
</div>

.flexbox-column{
  display: flex;
  flex-direction: column;
}

.flexbox-row{
  display: flex;
  flex-direction: row;
  align-items: center;
}

also I just realized i wrote JSX not HTML. That's reacts toll on me...

also you can give your item divs a fixed height, and have overflow-y: scroll to be able to scroll through the table.

[inland oak]

how to specify relative widths of first two items just to be sure? 😉

[opaque rivet]

so for item-1, you can say width: 80% for example

[inland oak]

ah got it

not yet at the finish

but getting closer

it works exactly like I wish

❤️

[opaque rivet]

nice, FYI your item-2 has to have a width of 20 or lower to be on the same row.
if you want to jazz it up a bit:

.flexbox-row{
  display: flex;
  flex: 1;
  flex-direction: row;
  align-items: center;
  justify-content: space-between;
}```

`align-items: center` will vertically center both divs in the row. `justify-content: between` will place both divs at opposite ends of the row. `flex: 1` should mean that both divs have the same proportion of the width of the row (if my memory is right).

[prisma nebula]

Well, I am trying to link a CSS file to an HTML file. But it's not working ( Can anyone can help me with this )

[foggy bramble]

I'm using django-authemail for login, signup, logout, password_reset, and password_change.
I want to override email message, anyone knows how to do that?

[opaque rivet]

relative path: ../image/style.css

[inland oak]

20 or lower? hmm weird, tried already much lower
http://80.78.247.245/#self

[prisma nebula]

Thanks for your help

[opaque rivet]

hmm yeah that is weird. Scrap the widths for each div and give the .flexbox-row: justify-content: between; and they should be on the same row then.

[inland oak]

between is not acceptable argument

perhaps space-between?

[opaque rivet]

yes sorry, space-between.

[inland oak]

well, it did not work

[opaque rivet]

hmm 🤔

[nimble epoch]

@inland oak you couldve just used bootstrap row class

[inland oak]

i am almost close

I feel it

those flex boxes are exactly working like I wished

I have scroll bars as I desired

[nimble epoch]

of course they do

[inland oak]

it works)

style for flexbox-row did not reach itself

[opaque rivet]

oh nice, good to hear 🙂

[inland oak]

Wwwwwohoooo!

🎉

[lament glade]

Anyone here use jinja2 much?

[nimble epoch]

i used to its similar to django template. you need help?

[lament glade]

Yeah, just had a quick question about looping over an include

[dusk portal]

hey bro why u blocked me ;-;

[dusk portal]

yes sometimes i use jinja templating

[lament glade]

So I'm looping over a list of dicts:

{% for post in posts-%}
    {% include 'post.html' %}
{% endfor %}

And I want the included template to render each one using the data in the dict. How do I set "post" as the top level context for each time it loops include?

[hot crest]

Hi guys, I have a really important question.
I want to build a website, like stack overflow but with much much fewer features:
==> users are able to post a question or answer another existing question

The only difference that I want it to be real-time/live whatever you call it

I want to use WebSockets so whenever someone posts a new question you can see it in real-time and neither when someone answers a question

however, I have no idea how to deal with these data and store them in the database

Could someone explain to me, please?

should I store the data that comes through WebSocket in the database!?
🙄

[dusk portal]

can u explain more nicely??

[nimble epoch]

this is not the way to do what you are looing for

[dusk portal]

yes lol

u can fetch data from database by jinja not whole template

lol

[inland oak]

{% for post in posts %}
    {{ post.html }}
{% endfor %}

perhaps you are looking for this?

[hot crest]

Helloo 🙂

[dusk portal]

u can ,use databases

u use flask or django @hot crest

[hot crest]

Im going to use django

[dusk portal]

nice u can

[hot crest]

Yea I know that I need to use Django but
I dont
Can you explain more in details?

[lament glade]

Not quite; so post.html is a template. I have a list of dictionaries, and I'd like to render the template one time per dict on a single page.

[nimble epoch]

@lament glade you want to iterate through each post then show then one by one in your page, right?

[inland oak]

ah, I think I got what he wishs

it can be done

[terse vapor]

I'm not sure did i get this correctly, but u can use rendering the file in backend, then for loop and then show the data with certain var, lol

[opaque rivet]

for websockets you're going to use django-channels. It'll turn your WSGI server into an ASGI server powered by Daphne. It's a bit complex to get your head around consumers, channels and the channel layer - so I recommend watching some youtube videos on Django Channels. If you don't know Django yet, then don't go straight into it. It will confuse you further.

[inland oak]

rendered_posts = []
template = loader.get_template('post.html')
for post in posts:
    rendered_posts.append(template.render(data=post))

return HttpResponse(loader.get_template('second_template.html').render({posts=rendered_posts}))

{% for post in posts-%}
    {{ post }}
{% endfor %}

you are essentially trying to do something like that

you can pre render your posts with different jinja template, before submitting already rendered to new render template

[hot crest]

@opaque rivet Yes seems like It needs a bit of time to learn
I already know Django and working with DRF mostly
But after all, lets say i made a connection between users with channels,
is that okay to store the datas in a sql database like psql?