Dart fromJson cannot parse double values

Question

I'm having problem using fromJson in flutter. I'm receiving my data like this

{id: d7ba912e-69fd-11ea-9ab0-6597c4120b03, receipt_date: 2020-03-18T17:30:00.000Z, customer_id: e3fedf5e, amount: 2500, remark: Amount 2500, created_on: 2020-03-19T16:22:35.000Z, collectionSize: 3, name: Customer 1}

And I'm using this fromJson to parse:

factory CashReceipt.fromJson(Map<String, dynamic> json) { return CashReceipt( id: json['id'], customerId: json['customer_id'], date: json['date'] as DateTime, amount: json['amount'] as double, remark: json['remark']); }

The "amount" property is double in my model. It is causing following error. The data coming from API is "amount:2500". It goes away if I change the "amount" to "int". But it is not right. Your help is much appreciated.

_CastError (type 'int' is not a subtype of type 'double' in type cast)

Answer 1

You can use

num amount

instead of

double amount

and you will not get this error. see this doc