Cannot apply DjangoModelPermissions on a view that does not have `.queryset` property or overrides the `.get_queryset()` method

Question:

I am getting the error “.accepted_renderer not set on Response resp api django”.

I am following the django rest-api tutorial.
Django version i am using 1.8.3
I followed the tutorial till first part. It worked properly. But when i continued the 2nd part in sending response, i got an error 

Cannot apply DjangoModelPermissions on a view that does not have `.queryset` property or overrides the `.get_queryset()` method.

Then i tried other ways i got 

.accepted_renderer not set on Response resp api django

Please help me out. I think its permission issue.

Asked By: Wagh

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Source

Answers:

You probably have set DjangoModelPermissions as a default permission class in your settings. Something like:

REST_FRAMEWORK = {
    'DEFAULT_PERMISSION_CLASSES': (
        'rest_framework.permissions.DjangoModelPermissions',
    )
}

DjangoModelPermissions can only be applied to views that have a .queryset property or .get_queryset() method.

Since Tutorial 2 uses FBVs, you probably need to convert it to a CBV or an easy way is to specify a different permission class for that view.
You must be using the api_view decorator in your view. You can then define permissions like below:

from rest_framework.decorators import api_view, permission_classes
from rest_framework import permissions

@api_view([..])
@permission_classes((permissions.AllowAny,))
def my_view(request)
    ...

To resolve the renderer error, you need to add the corresponding renderer to your settings.

REST_FRAMEWORK = {
    'DEFAULT_RENDERER_CLASSES': (
        'rest_framework.renderers.<corresponding_renderer>',
        ...
    )
}
Answered By: Rahul Gupta

I got it working in another way.
My logged in user was the superuser which i have created.
So i have created another user from admin and made him staff user and provided all the permissions. Then logged in to admin by that user.

In settings.py file i changed code.

REST_FRAMEWORK = {
    # Use Django's standard `django.contrib.auth` permissions,
    # or allow read-only access for unauthenticated users.
    'DEFAULT_PERMISSION_CLASSES': [
        'rest_framework.permissions.IsAuthenticated',
    ]
}

And it worked.

Answered By: Wagh

Solution for me was as pointed out by @ProfNandaa above

Quick fix, comment out the
‘rest_framework.renders.DjangoModelPermissions’ line for now — if you
are following the DRF Tutorial 2; and perhaps you had added that in
settings.py during the homepage example.

I had indeed added this from the homepage example before embarking on the tutorial and hit the same issue.

When I commented out the offending code

REST_FRAMEWORK = {
    'DEFAULT_PERMISSION_CLASSES': (
        'rest_framework.permissions.DjangoModelPermissions',
    )
}

from settings.py it all worked fine again.

Answered By: the-jade-rabbit

There are lots of good solutions already listed here. I also faced the same problem in second tutorial. It was showing:

Cannot apply DjangoModelPermissionsOrAnonReadOnly on a view that does
not set .queryset or have a .get_queryset() method.

I changed the settings.py to exclude DEFAULT_PERMISSION_CLASSES like below:

REST_FRAMEWORK = {
    'DEFAULT_PERMISSION_CLASSES': [
    ]
}

Then it runs successfully. I tried this before I have found these answers.

Answered By: arshovon

In my case, (for tutorial 2, djangorestframework ver 3.7.7), it works when I change settings to:

REST_FRAMEWORK = {
    'DEFAULT_PERMISSION_CLASSES': [
        'rest_framework.permissions.AllowAny',
    ]
}
Answered By: CK.Nguyen

From Django Rest Framework’s documentation, you can add this to your view:

queryset = User.objects.none()

Answered By: Ram

For test, you can use

REST_FRAMEWORK = {
    'DEFAULT_PERMISSION_CLASSES': [
        'rest_framework.permissions.AllowAny',
    ]
}

This setting defaults to allowing unrestricted access.
Documentions

Answered By: Darwin

if you’re using @app_view then you have to simply remove this part:

REST_FRAMEWORK = {
    'DEFAULT_PERMISSION_CLASSES': [
        'rest_framework.permissions.DjangoModelPermissionsOrAnonReadOnly',
        'rest_framework.permissions.DjangoModelPermissions',
        'rest_framework.permissions.AllowAny',
        
    ],
    
}
Answered By: Sheraz Asghar