Flutter/Dart Json Serialization - json

Question

I am new to both Flutter and Dart and trying to convert some android studio application to use flutter if I can. I am trying to parse some simple json to learn how all of the dart/flutter features can help me.
The class structure that I want to write to is:
class Company extends Salinas {
final String name;
Company({this.name}) : super();
factory Company.fromJson(Map<String, dynamic> json) => _$CompanyFromJson(json);
Map<String, dynamic> toJson() => _$CompanyToJson(this);
}
class Salinas {
final int id;
Salinas({this.id});
factory Salinas.fromJson(Map<String, dynamic> json) => _$SalinasFromJson(json);
Map<String, dynamic> toJson() => _$SalinasToJson(this);
}
the json string is simple
{"id":1,"name":"Acme"}
and:
print(company.id)is null
print(company.name) is Acme;
when I look at the Company.g.dart file there is no reference to the extended class Salinas?
is there a way to do this?
I'm clearly missing something.

Answer 1

You need to define extended class properties in child constructor like this:
class Company extends Salinas {
final String name;
Company({id, this.name}) : super(id: id);
}
After you will see this result:
print(company.id) is 1
print(company.name) is Acme;

Answer 2

class Company {
int id;
String name;
Company({this.id, this.name});
Company.fromJson(Map<String, dynamic> json) {
id = json['id'];
name = json['name'];
}
Map<String, dynamic> toJson() {
final Map<String, dynamic> data = new Map<String, dynamic>();
data['id'] = this.id;
data['name'] = this.name;
return data;
}
}
On the basis of JSON you have provided, you should have made a Model as above.
After that, you can map the whole thing quite conveniently,
Company company = Company.fromJson(response);
and then you are free to print
print(company.id);
print(company.name);