Auto create auth token for user

apps/user/models.py

@@ -3,9 +3,12 @@ from django.contrib.auth.models import AbstractUser, UserManager
 from django.contrib.postgres import fields as pgfields
 from django.utils.translation import gettext_lazy as _
 
+from rest_framework.authtoken.models import Token
+
 from json import dumps
 from api.v1 import serializers
 
+
 class User(AbstractUser):
     USER_ROLE = 0
     AUTHOR_ROLE = 1
@@ -24,8 +27,10 @@ class User(AbstractUser):
         (FEMALE, 'Женщина'),
     )
     email = models.EmailField(_('email address'), unique=True)
-    role = models.PositiveSmallIntegerField('Роль', default=0, choices=ROLE_CHOICES)
-    gender = models.CharField('Пол', max_length=1, default='n', choices=GENDER_CHOICES)
+    role = models.PositiveSmallIntegerField(
+        'Роль', default=0, choices=ROLE_CHOICES)
+    gender = models.CharField(
+        'Пол', max_length=1, default='n', choices=GENDER_CHOICES)
     birthday = models.DateField('День рождения', null=True, blank=True)
     country = models.CharField('Страна', max_length=50, null=True, blank=True)
     city = models.CharField('Город', max_length=85, null=True, blank=True)
@@ -38,7 +43,9 @@ class User(AbstractUser):
     vkontakte = models.URLField('ВКонтакте', default='', null=True, blank=True)
     fb_id = models.BigIntegerField(null=True, blank=True, unique=True)
     fb_data = pgfields.JSONField(default={}, null=True, blank=True)
-    is_email_proved = models.BooleanField('Верифицирован по email', default=False)
+    is_email_proved = models.BooleanField(
+        'Верифицирован по email', default=False
+    )
     photo = models.ImageField('Фото', null=True, blank=True, upload_to='users')
 
     USERNAME_FIELD = 'email'
@@ -51,3 +58,17 @@ class User(AbstractUser):
         user_data = serializers.user.UserSerializer(instance=self).data
         user_data = dumps(user_data, ensure_ascii=False)
         return user_data
+
+    @receiver(post_save, sender=User)
+    def create_auth_token(sender, instance=None, created=False, **kwargs):
+        if (
+            (instance.is_active or instance.fb_id) and
+            instance.role in [User.AUTHOR_ROLE, User.ADMIN_ROLE] and not
+            hasattr(instance, 'auth_token')
+        ):
+            Token.objects.create(user=instance)
+        elif (
+            not (instance.is_active or instance.fb_id) or
+            instance.role not in [User.AUTHOR_ROLE, User.ADMIN_ROLE]
+        ) and hasattr(instance, 'auth_token'):
+            instance.auth_token.delete()