Returning custom message when a permission is denied in DRF

Question

Django REST Framework has an excellent piece of documentation about permissions. I\'ve been able to use pre-made permission classes and also built my own.

However, there

Answer 1

From DRF

you can simply add message attribute.

from rest_framework import permissions

class IsSuperUserPermission(permissions.BasePermission):
    message = 'User is not superuser'

    def has_permission(self, request, view):
        return self.request.user.is_superuser

It will return a dict with key detail, something like this:

{
    'detail': 'User is not superuser'
}

But what if you want for example that the dict key not to be detail but errors for example, it will be the same how return errors DRF.

We can set message attribute not to string but to dict, something like this:

class IsSuperUserPermission(permissions.BasePermission):
    message = {'errors': ['User is not a superuser']}

    def has_permission(self, request, view):
        self.message['errors'].clear()
        return self.request.user.is_superuser

In this case the error will be:

{
    'errors': ['User is not a superuser']
}