#🔒 Flask Decorator problem

9 messages · Page 1 of 1 (latest)

sacred smelt
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I am trying to construct a decorator ("admin_only") for (def add_new_post():) function.
This is my code https://paste.pythondiscord.com/QQPQ and i know that there is smth wrong with the decorator, probably i have to get some information about what kind of object flask returns when nobody is logged in. But the question is, why tf is this error occurring when i am tryin to reach home ("/") or other route after i am logging in as user 1?
"werkzeug.routing.exceptions.BuildError: Could not build url for endpoint 'add_new_post'. Did you mean 'delete_post' instead? "
How is this even related? I am not trying to reach 'add_new_post'. I even cant cause this error occurs.

clear agateBOT
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@sacred smelt

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full urchin
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!d functools.wraps - decorate the wrapper, otherwise all info about the original function (its name, signature with hints, etc) are lost

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functools.wraps 

@functools.wraps(wrapped, assigned=WRAPPER_ASSIGNMENTS, updated=WRAPPER_UPDATES)```
This is a convenience function for invoking [`update_wrapper()`](https://docs.python.org/3/library/functools.html#functools.update_wrapper) as a function decorator when defining a wrapper function. It is equivalent to `partial(update_wrapper, wrapped=wrapped, assigned=assigned, updated=updated)`. For example...
bright mist
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Basically ```py
@functools.wraps(func)
def wrapper(*args, **kwargs):

full urchin
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!e managed to make a visual example of no wraps vs with wraps

from functools import wraps

def bad_deco(fun):
    def wrapper(*args, **kwargs): 
        # some stuff here maybe
        return fun(*args, **kwargs)
    return wrapper

def good_deco(fun):
    @wraps(fun)
    def wrapper(*args, **kwargs): 
        # some stuff here maybe
        return fun(*args, **kwargs)
    return wrapper

@bad_deco
def my_function(): print("whatever")

@good_deco
def my_function2(): print("whatever")

print(my_function) # lost the name, shows wrapper
print(my_function2) # has the original name
clear agateBOT
clear agateBOT
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