Parse JSON object as Interface in Dart

Question

I have an interface Employee and Department. I'm loading JSON from server that I need to "parse" to object that implements those interfaces. Is there a way how to achieve this automatically since all types in interface and JSON object are base types (String, number, list, map)?

// Abstract classes represents interfaces
abstract class Employee {
  String firstName;
  String lastName;
}

abstract class Department {
  String name;
  List<Employee> employees;
}

// JSON
{
  "name": "Development",
  "employees":
  [
    {"firstName":"John", "lastName":"Doe"}, 
    {"firstName":"Anna", "lastName":"Smith"},
    {"firstName":"Peter", "lastName":"Jones"}
  ]
}

I want to parse it like this

main() {
  ...
  Department department = someMethodToParse(jsonFromServer);
  ...
}

score 3 · Accepted Answer · edited May 23 '17 at 12:11

There are a few packages that deal with JSON de/serialization

http://www.dartdocs.org/documentation/serialization/0.9.1+1/index.html#serialization/serialization (serialization package)
Can I automatically serialize a Dart object to send over a Web Socket? (package exportable)
Convert JS object into Dart classes (manual)
How to convert an object containing DateTime fields to JSON in Dart? (handling DateDime)
Add JSON serializer to every model class?

Parse JSON object as Interface in Dart

1 Answers1