There are 3 models: employee, department, position. What should be the structure so that in the employee’s admin panel you can select a department, then a position, but so that only those positions that belong to a its department are displayed for the position?

This is what was found by the help of the good friend Shubham , haven't gone through it yet but it's a great start

i have this error: no such table: src_bill

Can anyone tell me free sources to learn Django

Hi everyone. I'm trying to deploy my Django application with AWS but I'm encountering the invalid header error despite the fact that I've copied the URL and pasted it in my allowed host in settings.py. Any suggestions guys

Friends, In 'UserProfile' model, I have set 'email' field to 'null=True, blank=True". But, when in django admin page, if I try to leave 'email' field blank, it shows me following error. " Exception Value: NOT NULL constraint failed: auth_user.email " What could be the reason..? Any solution for this..? Thank You..!

Did u set USERNAME field to email?

No, I did not change 'User' model. I created, separate 'UserProfile' model and connected it to 'User' model.

Using one to one relationship?

In 'UserProfile' model I'm having 'username' and 'email' fields.

Well then why would u have username and email field inside profile model...the user model has that...if u want to override some behavior of the fields included inside the user model, override AbstractBaseUser or AbstractUser.

imgs = Image.open(Images.img.path) Help me

how to get data in RetrieveAPIView by slug but not by pk ?

Just use the slug and not pk inside URL pattern

I got this - View expected URL argument named "pk". Fix your URL or set the "lookup_field"

As the message suggests, you can use the lookup field to specify which field to use inside the get_object of the view

I'll add to my question .. how to get multiple entries that have the same slug?

The slug must be unique

ok, if instead slug - field category? How can i get all posts witch have the same category?

in simple django i did it like this: Posts.objects.filter(category='category'). But how to do in RetrieveAPIView?

Django Rest Framework is still what you call simple Django It's "just" an app Take a tutorial and keep studying to learn how to write APIs quickly

path('breeds_list/<str:breed>/', CatsView.as_view()), ---- class PostDetail(generics.RetrieveAPIView): lookup_field = 'breed' queryset = Cats.objects.all() serializer_class = CatsList def get_queryset(self): slug = self.kwargs["breed"] # print('$$$$$$$$$$$$$',item) return Cats.objects.filter(breed=slug) ---- i got error Field 'id' expected a number but got 'Burmese'

path('breeds_list/<str:breed>/', CatsView.as_view()), ---- class PostDetail(generics.RetrieveAPIView): lookup_field = 'breed' queryset = Cats.objects.all() serializer_class = CatsList def get_queryset(self): slug = self.kwargs["breed"] # print('$$$$$$$$$$$$$',item) return Cats.objects.filter(breed=slug) ---- i got error Field 'id' expected a number but got 'Burmese'

The URL in your browser should be 127.0.0.1:8000/breeds_list/1

Anybody knows pythonanywhere hosting?

Hi, my django program runs on the Internet with a desktop without any problems But in phone platform, when I try to logging or submitting some form in the site, it gives an error 403, which is for csrf what is wrong here

How to declare a variable in django template other than using {with} ??

How to declare a variable in django template other than using {with} ??

Why do you want to do that?

I need to declare a variable in template and then inside loop when condition statisfy I need to get that value in Javascript

And why is that a problem with default template placeholders?

Can I change the value ??

def run_test(): m = matrix('CE802_P2_Data.csv’) for k in range(2,5): for beta in range(11,25): S = get_groups(m, k, beta/10) print(str(k)+‘-’+str(beta)+‘=’+str(S.get_count_frequency()))

anybody know

Hope your well, Got an issue that can be tackeled but i personally fail to. Has anyone had experience with Multipart form data serialization? With OnetoMany relationship? For fetching data it works but when we override the create method it doesn’t.

what is the best tutorial to learn django rest?

the officlal docs

anything else?

How to add celery to existing function

you don't add celery to exsiting function, you need to create a task and call it from where needed

Task.py enough?

In my django app , whenever there's entry and model is updated with new entry , I want to send a WhatsApp notification or just track the changes on model.. Like whenever chnges made to server need to send notification to client. Can anyone please guide me how can I achieve this..

you can use signals

What all needed to run background task using celery, celery beat

have you checked the celery documentation regarding that?

I follow but i didn't understand

First steps with Django — Celery 5.2.3 documentation https://docs.celeryproject.org/en/stable/django/first-steps-with-django.html