SPRING BOOT

[fast dew]

So this application should be really simple, but for some reasons it is not working this simple CRUD, which "Passagens" (tickets) hava a onetoone relationship with aeroportos(airports) whtich is fine, but then when i move on to the front i created a dropdown and foreach to list all the airports and select the name of the correspondent airport and the id, when i finally move to the front it says that some of the values arent' being completed cuz they are all not nullable. BUT I CHECKED SOO MUCH, i think the issue is how do I pick the foreign of airports in the front and insert in the table of passagens(tickets) THE OTHERS TABLES ARE WORKING JUST FINEEE! AND CRUD ARE WORKING FOR THEM!

[ember basin]

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[scenic pilot]

Can you set a breakpoint in the cadastrar method?

in the controller

and check the content of the Passagens model attribute

maybe one of these dates is null?

[fast dew]

Great idea daniel

like this?

[scenic pilot]

yes

[ember basin]

It looks like you are having issues with debugging or issues that can be solved using a debugger.
Check out this article on dev.java to see how debugging works and how to use a debugger.
This Stack Overflow question and its answers also explain debugging in general.

These links describe how to use the debugger in some IDEs:
• Debugging in IntelliJ
• Debugging in Eclipse

[scenic pilot]

if you need help with it

[fast dew]

ohhh thanks let me see i know how to set the breakpoint and trigger but idk how to enter springboot eclipse in debug mode

[ember basin]

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[fast dew]

let me read

[scenic pilot]

Disclaimer: I was a slightly involved in the creation/review of the dev.java article

[scenic pilot]

you can start the application in debug mode by using the bug symbol

normally there's a green play button for running the application

[fast dew]

find it!!!

[scenic pilot]

there should be a green bug next to it

yeah

[fast dew]

now is launching hehee lets see

[scenic pilot]

if it's started in debug mode, it will stop at breakpoints

[scenic pilot]

but the sites linked here explain debugging both in general and in Eclipse specifically

[scenic pilot]

switch

is the @DateTimeFormat from jackson?

[scenic pilot]

on the right in the variables view, you can see your variables

specifically passagem

Is that as you expect it?

[fast dew]

the id values are fine

and it actuallys show the airport id right?

soo maybe

the problem it is the date

[scenic pilot]

what is the chegada thing?

[fast dew]

oh date of returning

[scenic pilot]

is it null?

[fast dew]

not nullabe

all the models not nullable values

even the ids

[scenic pilot]

yes but is it null in the debugger?

it's not nullable for the DB

[fast dew]

perfect

all three are null

you GOT IT

all three dates null

but preco(price) is working just fine

[scenic pilot]

the error tells you "it tried to put a non nullable field (the chefeda thing) into the database but it was null

[fast dew]

and nome name too

yeah

which is weird cuz the inputs are fine right

[scenic pilot]

?

[fast dew]

what is jackson

[scenic pilot]

a json thing

I think converting the inputs to Dates could be an issue

[fast dew]

mport java.util.Date;

import org.springframework.format.annotation.DateTimeFormat;
import org.springframework.format.annotation.DateTimeFormat.ISO;

[scenic pilot]

since these are typically sent as strings

[scenic pilot]

ah ok that looks ok

Can you check the network tab of the browser window while you make the request

[fast dew]

you the boss let me do it

[scenic pilot]

browser devtools*

the network tab shows you exactly what is being sent

that should match what the Spring application receives

[fast dew]

cadastrar means create

the create method

[scenic pilot]

click on it

btw you can press F8 in Eclipse and it will continue

like the breakpoint suspends the program

[scenic pilot]

and F8 lets it continue

[fast dew]

i clicked

and then i receiveid that

[scenic pilot]

did you reload the page?

[scenic pilot]

?

[fast dew]

reload and see the network?

[scenic pilot]

that one looks like you might have reloaded the page by clicking in the URL bar and pressing enter or similar

Do you know the difference between GET and POST?

[fast dew]

lil bit get

i can just receive the value cannot change it

post and can change the entire thing

[scenic pilot]

?

[fast dew]

like for instance i can get the id

[scenic pilot]

the network tab should show you what's sent

[fast dew]

but i cant change the id in GET

[scenic pilot]

ah so the browser can do GET and POST requests

[scenic pilot]

typically, you'd use GET for anything requesting a page and POST for operations that change something

[scenic pilot]

now click on the submit button and record the request in the network tab

[scenic pilot]

what's in the payload part?

or the other parts there

these might give you information about the request

[fast dew]

wow

[scenic pilot]

well the dates don't really seem valid

[fast dew]

yeah you right but we i was doing okay it wasnt working soo

let me try again

[scenic pilot]

does that work?

[fast dew]

nop

[scenic pilot]

still same error?

with the null thing

[fast dew]

yes...

let me enter the debug again

[scenic pilot]

I think you should use th:field for your thymeleaf fields

[scenic pilot]

.

in the inputs

[fast dew]

but like for creating the value should be "" right?

[scenic pilot]

?

[fast dew]

i mean for price it is like that and price is working

should i change for date

[scenic pilot]

idk

[scenic pilot]

I guess

[fast dew]

i will try sir!

lets see

[scenic pilot]

you could also try enabling verbose logging

[fast dew]

for the dates

[fast dew]

ooh what is this

[scenic pilot]

to get more information

[scenic pilot]

it means print more stuff to the console

whenever something happens

[scenic pilot]

it literally tells you in the image

[fast dew]

woah

what about this

it could bee

i would need to drop the bd right

[fast dew]

Daniel

big news

changed tot ype string and the error persists

lol

[ember basin]

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[scenic pilot]

maybe the issue is the variables being multiple words

[scenic pilot]

possible

but in general, I would try to use LocalDate or LocalDateTime if possible

[fast dew]

Thanks soo much for you helping tho

[ember basin]

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[fast dew]

you explain step by step

and didnt call me stupid

even tho i m newbie

we need more people like you in the community