Django: checking permission on user code example

Example 1: Django: checking permission on user

from typing import Set

from django.contrib import admin
from django.contrib.auth.models import User
from django.contrib.auth.admin import UserAdmin

@admin.register(User)
class CustomUserAdmin(UserAdmin):
    def get_form(self, request, obj=None, **kwargs):
        form = super().get_form(request, obj, **kwargs)
        is_superuser = request.user.is_superuser
        disabled_fields = set()  # type: Set[str]

        if not is_superuser:
            disabled_fields |= {
                'username',
                'is_superuser',
                'user_permissions',
            }

        for f in disabled_fields:
            if f in form.base_fields:
                form.base_fields[f].disabled = True

        return form

Example 2: Django: checking permission on user

{% if perms.auth.delete_user %}
<button>Delete user!</button>
{% endif %}

Example 3: Django: checking permission on user

from django.contrib.auth.decorators import permission_required

@permission_required('auth.view_user')
def users_list_view(request):
    pass

Example 4: Django: checking permission on user

from django.core.exceptions import PermissionDenied

def users_list_view(request):
    if not request.user.has_perm('auth.view_user'):
        raise PermissionDenied()