dockered

django/chat/serializers/ask.py

@@ -0,0 +1,10 @@
+from rest_framework import serializers
+
+from django.utils.translation import gettext as _
+
+from profiles.models import ProfileModel
+from ..models import ChatChannelModel, ChatMessageModel
+
+class AskSerializer(serializers.ModelSerializer):
+
+    members_id = serializers.ListField(child=serializers.IntegerField())

django/chat/serializers/chat.py

@@ -0,0 +1,40 @@
+from rest_framework import serializers
+
+from django.utils.translation import gettext as _
+from django.contrib.auth.models import User
+
+from ..models import ChatChannelModel, ChatMessageModel
+
+
+class ChatChannelSerializer(serializers.ModelSerializer):
+
+    members_id = serializers.ListField(child=serializers.IntegerField(), required=True, write_only=True)
+    messages = serializers.SerializerMethodField()
+
+    class Meta:
+        model = ChatChannelModel
+        fields = ["members_id", "id", 'messages']
+
+    def validate_members_id(self, value):
+        members_id: [int] = value
+        if len(members_id) < 2:
+            raise serializers.ValidationError(_('There is not enough members to create the channel.'))
+        if len(set(members_id)) != len(members_id):
+            raise serializers.ValidationError(_('Duplicate in members list.'))
+        if self.context.get('user').pk not in members_id:
+            raise serializers.ValidationError(_('You are trying to create a group chat without you.'))
+        for member_id in members_id:
+            if not User.objects.filter(pk=member_id).exists():
+                raise serializers.ValidationError(_(f"The profile {member_id} doesn't exist."))
+        return members_id
+
+    def get_messages(self, obj: ChatChannelModel):
+        messages = ChatMessageModel.objects.filter(channel=obj).order_by('time')
+        return ChatMessageSerializer(messages, many=True).data
+
+
+class ChatMessageSerializer(serializers.ModelSerializer):
+
+    class Meta:
+        model = ChatMessageModel
+        fields = ["channel", "author", "content", "time"]