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Demo Code: Search in JSON - The full code for StackOverflow question #74668608 :)
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| import 'dart:convert'; | |
| /// Core School class. Details about individual School. | |
| class School { | |
| String city; | |
| String districty; | |
| String name; | |
| School({required this.city, required this.name, required this.districty}); | |
| factory School.fromJson(Map<String, dynamic> json) { | |
| return School( | |
| city: json['city'], | |
| name: json['name'], | |
| districty: json['district'], | |
| ); | |
| } | |
| } | |
| /// Schools class to organize search and additional functionalities | |
| class Schools { | |
| List<School> list; | |
| Schools({required this.list}); | |
| factory Schools.fromJson(List<dynamic> json) { | |
| return Schools( | |
| list: json.map((e) => School.fromJson(e as Map<String, dynamic>)).toList(), | |
| ); | |
| } | |
| static Future<Schools> get instance async { | |
| final String response = await rootBundle.loadString('assets/Schools.json'); | |
| List data = await json.decode(response); | |
| return Schools.fromJson(data); | |
| } | |
| List<School> searchByCity(String city) { | |
| return list.where((element) => element.city == city).toList(); | |
| } | |
| } | |
| // Use it like: | |
| void main() async { | |
| Schools schools = await Schools.instance; | |
| List<School> schoolsInIstanbul = schools.searchByCity('ISTANBUL'); | |
| print("We have ${schoolsInIstanbul.length} schools in Istanbul"); | |
| } |
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