Flutter update cart item list while removing duplicate entries

handyman_hank

I am working with a shopping cart app and using flutter_redux to update my cart. Everything is working good but I am getting duplicate items in my cart list, How can I remove these duplicate entries and add quantities. I want to get the list with the items and quantities. Please help me with this piece of code that where can I add the logic and filter the list with removed duplicate items. Here is my code: cartItemReducer.dart List<CartItem>...

Originally asked by Ammy Kang on Stack Exchange (stackoverflow) (CC BY-SA 4.0).

uphilltech

Great question — answering as the UphillTech team:

I've resolved the issue using this piece of code in my reducer.dart class. List<CartItem> addItem(List<CartItem> items, AddItemAction action) { bool isItemFound=false; if(items!=null) { for(int itemcount=0;itemcount<items.length;itemcount++){ CartItem item=items[itemcount]; if(item.product.id==action.item.product.id){ print("itemcount found"); item.quantity=action.item.quantity; isItemFound=true; break; } } }else{ items=new List(); } if(!isItemFound){ items.add(action.item); } return items; }

Full answer by Ammy Kang: https://stackoverflow.stackexchange.com/a/51085160 (CC BY-SA 4.0).

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