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## Laravel API开发实践
### 1. 创建模型
```
$ php artisan make:model Lesson -m
```
--migration or -m 代表自动创建一个数据库迁移文件
### 2. 创建数据库迁移
```
Schema::create('lessonss', function (Blueprint $table) {
$table->increments('id');
$table->string('title');
$table->text('body');
$table->boolean('free');
$table->timestamps();
});
```
### 3. 执行数据库迁移
```
$ php artisan migrate
```
### 4.创建控制器
```
$ php artisan make:controller App\\Api\\Controllers\\LessonsController
```
### 5.添加路由
```
Route::middleware('auth:api')->get('/user', function (Request $request) {
return $request->user();
});
$api = app('Dingo\Api\Routing\Router');
$api->version('v1', function ($api) {
$api->group(['namespace' =>
'App\Api\Controllers'], function ($api) {
$api->get('lessons', 'LessonsController@index');
$api->get('lessons/{id}', 'LessonsController@show');
});
});
```
### 6.添加控制器方法
```
public function index()
{
$lessons = Lesson::all();
return response()->json($data);
}
```
### 7.创建返回数据的模板
```
use App\Lesson;
use League\Fractal\TransformerAbstract;
class LessonTransformer extends TransformerAbstract
{
public function transform(Lesson $lesson)
{
return [
'title' =>
$lesson['title'],
'content' =>
$lesson['body'],
'is_free' =>
(boolean)$lesson['free']
];
}
}
```
### 8.修改控制器方法，让返回数据使用模板
```
public function index()
{
$lessons = Lesson::all();
return $this->collection($lessons,new LessonTransformer());
}
```
### 9.使用Dingo的helpers
```
use Dingo\Api\Routing\Helpers;
class Controller extends BaseController
{
use Helpers,AuthorizesRequests, DispatchesJobs, ValidatesRequests;
}
```
