move viewsets and serializers out of urls.py

apps/api/serializers.py

@@ -0,0 +1,32 @@
+# Copyright (C) 2018-2020 by BDE ENS Paris-Saclay
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+
+from django.contrib.contenttypes.models import ContentType
+from django.contrib.auth.models import User
+from rest_framework.serializers import ModelSerializer
+
+class UserSerializer(ModelSerializer):
+    """
+    REST API Serializer for Users.
+    The djangorestframework plugin will analyse the model `User` and parse all fields in the API.
+    """
+
+    class Meta:
+        model = User
+        exclude = (
+            'password',
+            'groups',
+            'user_permissions',
+        )
+
+
+class ContentTypeSerializer(ModelSerializer):
+    """
+    REST API Serializer for Users.
+    The djangorestframework plugin will analyse the model `User` and parse all fields in the API.
+    """
+
+    class Meta:
+        model = ContentType
+        fields = '__all__'