Init model serializers

api/chat/serializers.py

@@ -0,0 +1,27 @@
+from django.contrib.auth.models import User
+from rest_framework import serializers
+
+from api.chat.models import Message, Room
+
+
+class UserSerializer(serializers.ModelSerializer):
+    class Meta:
+        model = User
+        fields = ('id', 'username')
+
+
+class RoomSerializer(serializers.ModelSerializer):
+    participants = serializers.PrimaryKeyRelatedField(queryset=User.objects.all(), many=True)
+
+    class Meta:
+        model = Room
+        fields = ('id', 'title', 'participants')
+
+
+class MessageSerializer(serializers.ModelSerializer):
+    sender = serializers.PrimaryKeyRelatedField(queryset=User.objects.all())
+    room = serializers.PrimaryKeyRelatedField(queryset=Room.objects.all(), write_only=True)
+
+    class Meta:
+        model = Message
+        fields = ('id', 'content', 'sender', 'room')