RelatedManager passing as a ManyToManyField

[franbeep]

First time using a linter (and issue) here. I've noticed that when using user_permissions from AbstractUser (that is supposed to be a ManyToMany, as stated by the linter) it is indeed a RelatedManager by some gimmick that I'm unawre of, so when I use user_permissions.clear() the linter states a error, when it is valid code.

python=3.6.5
pylint=1.91
pylint-django=0.11.1

The class in which the method is defined just inherents user_permissions from AbstractUser.

So what should have been done? I really don't want to whitelist this error, neither just ignore.

[atodorov]

Will inspect in the next few days when I have the time.

Next time please paste a plain text of your code/error and not a picture.

[franbeep]

Next time please paste a plain text of your code/error and not a picture.

This code isn't entirely mine neither I have the authority to share it for the public.
I will try to reproduce the same error in a different project then I'll share with you.

[franbeep]

I've created a repository to show you what I meant.

The error resides in users.models.CustomUser. The linter is confunsing user_permissions from PermissionsMixin (which is inhereted by AbstractUser) with the same named property from AbstractUser.

Here is the models.py:

from django.contrib.auth.models import AbstractUser, Permission

# Custom permissions for CustomUser
USER_PERMS = ['change_customuser', 'add_customuser']

class CustomUser(AbstractUser):
    class Meta:
        verbose_name = 'CustomUser'
        verbose_name_plural = 'CustomUsers'
        app_label = "users"

    def grant_permissions(self):
        ''' Example adding permissions to User '''
        self.user_permissions.clear() 
        for perm in USER_PERMS:
            perm = Permission.objects.get(codename=perm)
            self.user_permissions.add(perm)
        return self.user_permissions

    def save(self, *args, **kwargs):
        ''' Saving while granting new permissions '''
        self.is_staff = True
        super(CustomUser, self).save()
        self.grant_permissions()

[atodorov]

The linter is confunsing user_permissions from PermissionsMixin (which is inhereted by AbstractUser) with the same named property from AbstractUser.

this doesn't sound right. From what I can see PermissionsMixin.user_permissions is a ManyToManyField. This property is not redefined inside the AbstractUser class again.

So from what I can tell pylint-django is doing the correct thing by recognizing that user_permissions is a ManyToManyField.