CODEWITHSUNDEEP
pythondjangodjango-rest-frameworkdjango-permissions
manoj adhikari
manoj adhikari

Reputation: 321

Add the permissions to the Group - Django-rest-framework

I am writing a REST API to create Group and assign permissions to that group.

Issue: How to create POST Method so that I can create a group having those permissions.

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Here is Snippet of code so far I have came

Groupserializer

class GroupSerializer(serializers.ModelSerializer):    
class Meta:
    model = Group
    fields = ('name','permissions')

Views

class UsersGroupCreateView(APIView):
permission_classes = [IsAdminUser]

def post(self , request , *args, **kwargs):
    serializer = GroupSerializer(data = request.data)
    
    if serializer.is_valid():
        data = serializer.validated_data
        group = Group.objects.create(name = data.get('name'), permissions = 
                                     data.get('permissions'))
    
        return Response({"status":"Group Created"},status=status.HTTP_201_CREATED)
    return Response(serializer.errors, status=status.HTTP_400_BAD_REQUEST

class GetPerm(APIView):

def get(self, request, *args, **kwargs):

    permissions = serializers.serialize('json', Permission.objects.all())
    return Response(permissions)

permissions from GetPerm() has following data:

"[{"model": "auth.permission", "pk": 1, "fields": {"name": "Can add log entry", "content_type": 1, "codename": "add_logentry"}}, {"model": "auth.permission", "pk": 2, "fields": {"name": "Can change log entry", "content_type": 1, "codename": "change_logentry"}}, {"model": "auth.permission", "pk": 3, "fields": {"name": "Can delete log entry", "content_type": 1, "codename": "delete_logentry"}}, {"model": "auth.permission", "pk": 4, "fields": {"name": "Can view log entry", "content_type": 1, "codename": "view_logentry"}}]"

Sorry , if I am not being much clear Any help would be appreciated !!

Upvotes: 1

Views: 2810

Answers (2)

manoj adhikari
manoj adhikari

Reputation: 321

I figured it out, and it's something like this.

        group = Group.objects.create(name = data.get('name'))
        try:
            permissions = request.data.get('permissions')
            for permission_index in permissions:
                permission=Permission.objects.get(id=permission_index)
                group.permissions.add(permission)
        except Exception as e:
            print("Error in creating")
        return Response({"status":"Group Created"},status=status.HTTP_201_CREATED)

also thanks to @afonso.

Upvotes: 0

drec4s
drec4s

Reputation: 8077

As the error states, you cannot directly assign ManyToMany relationships when first creating the object. You need to do it manually after :

 # ...
    if serializer.is_valid():
        data = serializer.validated_data

        group = Group.objects.create(name = data.get('name'))
        [group.permissions.add(p) for p in data.get('permissions')]
    
        return Response({"status":"Group Created"},status=status.HTTP_201_CREATED)
    return Response(serializer.errors, status=status.HTTP_400_BAD_REQUEST)


# ...

Upvotes: 2

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