Cleaned up LoginSerializer codebase

docs/api_endpoints.rst

@@ -7,6 +7,7 @@ Basic
 - /rest-auth/login/ (POST)
 
     - username (string)
+    - email (string)
     - password (string)
 
 

rest_auth/serializers.py

@@ -19,50 +19,73 @@ class LoginSerializer(serializers.Serializer):
     email = serializers.EmailField(required=False, allow_blank=True)
     password = serializers.CharField(style={'input_type': 'password'})
 
+    def _validate_email(self, email, password):
+        user = None
+
+        if email and password:
+            user = authenticate(email=email, password=password)
+        else:
+            msg = _('Must include "email" and "password".')
+            raise exceptions.ValidationError(msg)
+
+        return user
+
+    def _validate_username(self, username, password):
+        user = None
+
+        if username and password:
+            user = authenticate(username=username, password=password)
+        else:
+            msg = _('Must include "username" and "password".')
+            raise exceptions.ValidationError(msg)
+
+        return user
+
+    def _validate_username_email(self, username, email, password):
+        user = None
+
+        if email and password:
+            user = authenticate(email=email, password=password)
+        elif username and password:
+            user = authenticate(username=username, password=password)
+        else:
+            msg = _('Must include either "username" or "email" and "password".')
+            raise exceptions.ValidationError(msg)
+
+        return user
+
     def validate(self, attrs):
         username = attrs.get('username')
         email = attrs.get('email')
         password = attrs.get('password')
 
+        user = None
+
         if 'allauth' in settings.INSTALLED_APPS:
             from allauth.account import app_settings
+
             # Authentication through email
             if app_settings.AUTHENTICATION_METHOD == app_settings.AuthenticationMethod.EMAIL:
-                if email and password:
-                    user = authenticate(email=email, password=password)
-                else:
-                    msg = _('Must include "email" and "password".')
-                    raise exceptions.ValidationError(msg)
+                user = self._validate_email(email, password)
+
             # Authentication through username
-            elif app_settings.AUTHENTICATION_METHOD == app_settings.AuthenticationMethod.USERNAME:
-                if username and password:
-                    user = authenticate(username=username, password=password)
-                else:
-                    msg = _('Must include "username" and "password".')
-                    raise exceptions.ValidationError(msg)
+            if app_settings.AUTHENTICATION_METHOD == app_settings.AuthenticationMethod.USERNAME:
+                user = self._validate_username(username, password)
+
             # Authentication through either username or email
             else:
-                if email and password:
-                    user = authenticate(email=email, password=password)
-                elif username and password:
-                    user = authenticate(username=username, password=password)
-                else:
-                    msg = _('Must include either "username" or "email" and "password".')
-                    raise exceptions.ValidationError(msg)
+                user = self._validate_username_email(username, email, password)
 
-        elif username or email and password:
-            # Try get username if we have in request email
-            if email and not username:
+        else:
+            # Authentication without using allauth
+            if email:
                 try:
                     username = UserModel.objects.get(email__iexact=email).username
                 except UserModel.DoesNotExist:
-                    user = None
-            if username:
-                user = authenticate(username=username, password=password)
+                    pass
 
-        else:
-            msg = _('Must include either "username" or "email" and "password".')
-            raise exceptions.ValidationError(msg)
+            if username:
+                user = self._validate_username_email(username, '', password)
 
         # Did we get back an active user?
         if user: