product varient change list bug fix order item change quantity and remove

backend/order/serializers.py

@@ -0,0 +1,9 @@
+from rest_framework import serializers
+from .models import OrderItemModel
+
+
+class OrderItemSerailzier(serializers.ModelSerializer):
+    class Meta:
+        model = OrderItemModel
+        fields = "__all__"
+        read_only_fields = ('order', 'product')