fromJson function

dynamic fromJson(String jsonStr, dynamic type)

Creates a new instance of type, parses the json in jsonStr and puts the data into the new instance.

example:

// Simple type conversion
Person person = fromJson('{"id": 1, "name": "John Doe"}', Person);

// List conversion
List<Person> persons = fromJson('[{"id": 1, "name": "John Doe"}]', [() => List<Person>(), Person]);

// Map conversion
Map<String, Person> personsMap = fromJson('{"person1": {"id": 1, "name": "John Doe"}}',
                                          [() => Map<String, Person>(), [String, Person]]);

// Generics conversion
Page<Person> page = fromJson('{
  "number": 1,
  "size": 3,
  "total": 100,
  "items": [
    {"id": 1, "name": "person1"},
    {"id": 2, "name": "person2"},
    {"id": 3, "name": "person3"}
  ]
}', [() => Page<Person>(), {'items': [() => List<Person>(), Person]}]);

Throws NoConstructorError if type or Classes used inside type do not have a constructor without or only optional arguments.

Throws IncorrectTypeTransform if json data types doesn't match.

Throws FormatException if the jsonStr is not valid JSON text.

Implementation

dynamic fromJson(String jsonStr, /*Type | Function | List<Type | Function | List<Type | Function | ...>>*/ type) {
  var filler = json.decode(jsonStr);
  return _convertValue(type, filler);
}