Adds new tutorial

Author: FilledStacks

057-sqlite-and-migrations/.gitignore

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+# Miscellaneous
+*.class
+*.log
+*.pyc
+*.swp
+.DS_Store
+.atom/
+.buildlog/
+.history
+.svn/
+
+# IntelliJ related
+*.iml
+*.ipr
+*.iws
+.idea/
+
+# The .vscode folder contains launch configuration and tasks you configure in
+# VS Code which you may wish to be included in version control, so this line
+# is commented out by default.
+#.vscode/
+
+# Flutter/Dart/Pub related
+**/doc/api/
+**/ios/Flutter/.last_build_id
+.dart_tool/
+.flutter-plugins
+.flutter-plugins-dependencies
+.packages
+.pub-cache/
+.pub/
+/build/
+
+# Web related
+lib/generated_plugin_registrant.dart
+
+# Symbolication related
+app.*.symbols
+
+# Obfuscation related
+app.*.map.json

057-sqlite-and-migrations/.metadata

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+# This file tracks properties of this Flutter project.
+# Used by Flutter tool to assess capabilities and perform upgrades etc.
+#
+# This file should be version controlled and should not be manually edited.
+
+version:
+  revision: d408d302e22179d598f467e11da5dd968dbdc9ec
+  channel: stable
+
+project_type: app

057-sqlite-and-migrations/README.md

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+# sqflite_migration_example
+
+A new Flutter project.
+
+## Getting Started
+
+This project is a starting point for a Flutter application.
+
+A few resources to get you started if this is your first Flutter project:
+
+- [Lab: Write your first Flutter app](https://flutter.dev/docs/get-started/codelab)
+- [Cookbook: Useful Flutter samples](https://flutter.dev/docs/cookbook)
+
+For help getting started with Flutter, view our
+[online documentation](https://flutter.dev/docs), which offers tutorials,
+samples, guidance on mobile development, and a full API reference.

057-sqlite-and-migrations/assets/sql/1_create_schema.sql

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+CREATE TABLE todos(
+  id INTEGER PRIMARY KEY,
+  title TEXT,
+  complete INT
+);

057-sqlite-and-migrations/assets/sql/2_add_description.sql

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+ALTER TABLE todos ADD description TEXT;

057-sqlite-and-migrations/lib/app/locator.dart

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+import 'package:get_it/get_it.dart';
+import 'package:sqflite_migration_example/services/database_service.dart';
+import 'package:sqflite_migration_service/sqflite_migration_service.dart';
+import 'package:stacked_services/stacked_services.dart';
+
+final locator = GetIt.instance;
+
+void setupLocator() {
+  locator.registerLazySingleton(() => NavigationService());
+  locator.registerLazySingleton(() => DatabaseService());
+  locator.registerLazySingleton(() => DatabaseMigrationService());
+}

057-sqlite-and-migrations/lib/main.dart

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+import 'package:flutter/material.dart';
+import 'package:flutter/scheduler.dart';
+import 'package:sqflite_migration_example/app/locator.dart';
+import 'package:sqflite_migration_example/ui/router.dart' as router;
+import 'package:sqflite_migration_example/ui/startup/startup_view.dart';
+import 'package:stacked_services/stacked_services.dart';
+
+void main() {
+  setupLocator();
+  runApp(MyApp());
+}
+
+class MyApp extends StatelessWidget {
+  // This widget is the root of your application.
+  @override
+  Widget build(BuildContext context) {
+
+
+    return MaterialApp(
+      title: 'Flutter Demo',
+      navigatorKey: locator<NavigationService>().navigatorKey,
+      home: StartupView(),
+      onGenerateRoute: router.Router.onGenerateRoute,
+    );
+  }
+}

057-sqlite-and-migrations/lib/models/todo.dart

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+import 'package:freezed_annotation/freezed_annotation.dart';
+
+part 'todo.freezed.dart';
+part 'todo.g.dart';
+
+@freezed
+abstract class Todo with _$Todo {
+  Todo._();
+
+  factory Todo({
+    int id,
+    @required String title,
+    String description, 
+    @Default(0) int complete,
+  }) = _Todo;
+
+  factory Todo.fromJson(Map<String, dynamic> json) => _$TodoFromJson(json);
+
+  bool get isComplete => complete == 1 ? true : false;
+}