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"""
Checks that Pylint does not complain about various
methods on many-to-many relationships
"""
# pylint: disable=missing-docstring
from django.db import models
from django.contrib.auth.models import AbstractUser, Permission
class Book(models.Model):
name = models.CharField(max_length=100)
good = models.BooleanField(default=False)
class Author(models.Model):
name = models.CharField(max_length=100)
wrote = models.ManyToManyField(Book, verbose_name="Book",
related_name='books')
def get_good_books(self):
return self.wrote.filter(good=True)
def is_author_of(self, book):
return book in list(self.wrote.all())
def wrote_how_many(self):
return self.wrote.count()
# Custom permissions for CustomUser
USER_PERMS = ['change_customuser', 'add_customuser']
class CustomUser(AbstractUser): # pylint: disable=model-no-explicit-unicode
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 add_permission(self, permission):
self.user_permissions.add(permission)
def remove_permission(self, permission):
self.user_permissions.remove(permission)
def set_permissions(self, permissions):
self.user_permissions.set(permissions)
def save(self, *args, **kwargs):
''' Saving while granting new permissions '''
self.is_staff = True
super(CustomUser, self).save()
self.grant_permissions()
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