fromMap function

dynamic fromMap (Object dataObject, dynamic type)

Creates a new instance of type and maps the data of dataObject into it.

example:

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

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

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

// Generic conversion
Page<Person> page = fromMap({
  "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 fromMap(Object dataObject, /*Type | List<Type> | List<List<Type>>*/ type) {
  return _convertValue(type, dataObject);
}