change offer list and add party model and serializer

core/apps/orders/serializers/offer.py

@@ -94,4 +94,30 @@ class OffersSerializer(serializers.ModelSerializer):
         model = Offer
         fields = [
             'id', 'number', 'price', 'price_type', 'phone', 'comment', 'qqs',
-        ]
+        ]
+
+
+
+class OrderListForOfferSerializer(serializers.ModelSerializer):
+    offers = OffersSerializer(many=True)
+    product = serializers.SerializerMethodField(method_name='get_product')
+    unity = serializers.SerializerMethodField(method_name='get_unity')
+
+    class Meta:
+        model = Order
+        fields = [
+            'id', 'product', 'unity', 'quantity', 'date', 'offers'
+        ]
+    
+    def get_product(self, obj):
+        return {
+            'id': obj.product.id,
+            'name': obj.product.name,
+            'type': obj.product.type,
+        }
+
+    def get_unity(self, obj):
+        return {
+            'id': obj.unity.id,
+            'value': obj.unity.value
+        }