add example dart app

Author: Frank Treacy

.gitignore

@@ -1,4 +1,5 @@
 TO-DO.md
+/tmp
 
 # Miscellaneous
 *.class

example/.vscode/launch.json

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+{
+  // Use IntelliSense to learn about possible attributes.
+  // Hover to view descriptions of existing attributes.
+  // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
+  "version": "0.2.0",
+  "configurations": [
+    {
+      "name": "Dart",
+      "program": "lib/main.dart",
+      "request": "launch",
+      "type": "dart"
+    }
+  ]
+}

example/lib/main.dart

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+import 'dart:io';
+import 'package:flutter_data/flutter_data.dart';
+
+import 'main.data.dart';
+import 'model/comment.dart';
+import 'model/post.dart';
+import 'model/user.dart';
+
+// NOTE: FOR A COMPLETE FLUTTER EXAMPLE PLEASE SEE
+// https://github.com/flutterdata/flutter_data_todos
+
+void main() async {
+  Directory _dir;
+
+  try {
+    _dir = await Directory('../tmp').create();
+    final manager = await FlutterData.init(_dir);
+    final locator = manager.locator;
+
+    Repository<User> usersRepo = locator<Repository<User>>();
+    Repository<Post> postsRepo = locator<Repository<Post>>();
+    User user;
+
+    try {
+      user = await usersRepo.findOne('1');
+    } on DataException catch (e) {
+      if (e.status == HttpStatus.notFound) {
+        print('not found');
+      }
+    }
+
+    var user2 = User(id: 102, name: 'new name', email: '[email protected]');
+    await user2.save();
+
+    User(id: 102, name: 'new name', email: '[email protected]');
+
+    var p3 = Post(
+        id: 102,
+        title: 'new name',
+        body: '[email protected]',
+        user: user2.asBelongsTo,
+        comments: [Comment(id: 1, body: 'bla')].asHasMany);
+
+    assert(p3.body == '[email protected]');
+    assert(p3.user.value.email == user2.email);
+
+    var post = await postsRepo.findOne('1', params: {'_embed': 'comments'});
+
+    print(post.comments.map((c) => c.body));
+
+    assert(user.name == post.user.value.name);
+
+    var stream = usersRepo.watchAll().stream;
+
+    await for (var state in stream) {
+      print(state.length);
+    }
+  } finally {
+    await _dir.delete(recursive: true);
+  }
+}

example/lib/main.data.dart

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+
+
+// GENERATED CODE - DO NOT MODIFY BY HAND
+// ignore_for_file: directives_ordering
+
+import 'dart:io';
+import 'package:flutter_data/flutter_data.dart';
+
+
+import 'package:jsonplaceholder_example/model/post.dart';
+import 'package:jsonplaceholder_example/model/user.dart';
+import 'package:jsonplaceholder_example/model/comment.dart';
+
+extension FlutterData on DataManager {
+
+  static Future<DataManager> init(Directory baseDir, {bool autoModelInit = true, bool clear = true, Function(void Function<R>(R)) also}) async {
+    assert(baseDir != null);
+
+    final injection = DataServiceLocator();
+
+    final manager = await DataManager(autoModelInit: autoModelInit).init(baseDir, injection.locator, clear: clear);
+    injection.register(manager);
+    final postLocalAdapter = await $PostLocalAdapter(manager).init();
+    injection.register(postLocalAdapter);
+    injection.register<Repository<Post>>($PostRepository(postLocalAdapter));
+
+    final userLocalAdapter = await $UserLocalAdapter(manager).init();
+    injection.register(userLocalAdapter);
+    injection.register<Repository<User>>($UserRepository(userLocalAdapter));
+
+    final commentLocalAdapter = await $CommentLocalAdapter(manager).init();
+    injection.register(commentLocalAdapter);
+    injection.register<Repository<Comment>>($CommentRepository(commentLocalAdapter));
+
+
+    if (also != null) {
+      // ignore: unnecessary_lambdas
+      also(<R>(R obj) => injection.register<R>(obj));
+    }
+
+    return manager;
+
+}
+
+  
+  
+}
+
+

example/lib/model/adapters.dart

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+import 'package:flutter_data/flutter_data.dart';
+
+mixin JSONPlaceholderAdapter<T extends DataSupport<T>>
+    on StandardJSONAdapter<T> {
+  @override
+  String get baseUrl => 'https://jsonplaceholder.typicode.com/';
+
+  @override
+  String get identifierSuffix => 'Id';
+}

example/lib/model/comment.dart

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+import 'package:meta/meta.dart';
+import 'package:flutter_data/flutter_data.dart';
+import 'package:json_annotation/json_annotation.dart';
+import 'package:flutter_data/annotations.dart';
+
+import 'adapters.dart';
+import 'post.dart';
+
+part 'comment.g.dart';
+
+@JsonSerializable()
+@DataRepository([StandardJSONAdapter, JSONPlaceholderAdapter])
+class Comment extends DataSupport<Comment> {
+  @override
+  final int id;
+  final String body;
+  bool approved = false;
+  final BelongsTo<Post> post;
+
+  Comment({
+    this.id,
+    @required this.body,
+    this.approved,
+    BelongsTo<Post> post,
+  }) : post = post ?? BelongsTo<Post>();
+
+  factory Comment.fromJson(Map<String, dynamic> json) =>
+      _$CommentFromJson(json);
+  Map<String, dynamic> toJson() => _$CommentToJson(this);
+}

example/lib/model/comment.g.dart

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+import 'package:meta/meta.dart';
+import 'package:flutter_data/flutter_data.dart';
+import 'package:json_annotation/json_annotation.dart';
+
+import 'package:flutter_data/annotations.dart';
+import 'adapters.dart';
+import 'comment.dart';
+import 'user.dart';
+
+part 'post.g.dart';
+
+@JsonSerializable()
+@DataRepository([StandardJSONAdapter, JSONPlaceholderAdapter])
+class Post extends DataSupport<Post> {
+  @override
+  final int id;
+  final String title;
+  final String body;
+  final HasMany<Comment> comments;
+  final BelongsTo<User> user;
+
+  Post({
+    this.id,
+    @required this.title,
+    @required this.body,
+    HasMany<Comment> comments,
+    BelongsTo<User> user,
+  })  : comments = comments ?? HasMany<Comment>(),
+        user = user ?? BelongsTo<User>();
+
+  factory Post.fromJson(Map<String, dynamic> json) => _$PostFromJson(json);
+  Map<String, dynamic> toJson() => _$PostToJson(this);
+}