add: add chat for income and expence

core/apps/finance/serializers/expence_chat.py

@@ -0,0 +1,40 @@
+from django.db import transaction
+
+from rest_framework import serializers
+
+from core.apps.finance.models import Expence, ExpenceChat, ExpenceMessage
+
+
+class ExpenceMessageListSerializer(serializers.ModelSerializer):
+    user = serializers.SerializerMethodField(method_name='get_user')
+
+    class Meta:
+        model = ExpenceMessage
+        fields = [
+            'id', 'user', 'message', 'file'
+        ]
+    
+    def get_user(self, obj):
+        return {
+            'id': obj.user.id,
+            'full_name': obj.user.full_name,
+            'profile_image': obj.user.profile_image.url if obj.user.profile_image else None,
+        }
+
+
+class ExpenceMessageCreateSerializer(serializers.ModelSerializer):
+    class Meta:
+        model = ExpenceMessage
+        fields = [
+            'message', 'file', 'chat'
+        ]
+    
+    def create(self, validated_data):
+        with transaction.atomic():
+            return ExpenceMessage.objects.create(
+                message=validated_data.get('message'),
+                file=validated_data.get('file'),
+                user=self.context.get('user'),
+                chat=validated_data.get('chat'),
+            )
+