apply password validators during signup (#39)

rest_auth_toolkit/serializers.py

@@ -1,5 +1,7 @@
 from django.conf import settings
 from django.contrib.auth import authenticate, get_user_model
+from django.contrib.auth import password_validation
+from django.core import exceptions
 from django.utils.translation import gettext as _
 
 from rest_framework import serializers
@@ -24,6 +26,23 @@ class Meta:
             'password': {'style': {'input_type': 'password'}},
         }
 
+    def validate(self, data):
+        password = data['password']
+
+        # Create user object without saving it to get extra checks by validators
+        user = User(**data)
+
+        errors = {}
+        try:
+            password_validation.validate_password(password=password, user=user)
+        except exceptions.ValidationError as e:
+            errors['password'] = list(e.messages)
+
+        if errors:
+            raise serializers.ValidationError(errors)
+
+        return data
+
     def create(self, validated_data):
         return User.objects.create_user(
             email=validated_data['email'],