laravel5.5 dingo/api Call to undefined method App\Api\TransFormer\*Transformer::setCurrentScop

待我称王封你为后i 2022-05-09 10:12 140阅读 0赞

### 文章目录 ###

*   *   *  场景
         *  分析
         *  解决

### 场景 ###

*  最近在研究[dingo/api][dingo_api] and [tymondesigns/jwt-auth][tymondesigns_jwt-auth]； `dingo/api`的 [transformer][] 功能是很有用处的; 但是`Custom Transformation Layer`功能在使用的时候报错 `Call to undefined method App\Api\TransFormer\LessonTransformer::setCurrentScope()`

### 分析 ###

*  可能对[Custom Transformation Layer][transformer] 理解有误
 *  借鉴了[github issue][] , 继承`League\Fractal\TransformerAbstract` 实现transformer功能
    
     *  在 `League\Fractal\TransformerAbstract`接口中发现了这样一段话,

/** * Transformer Abstract * * All Transformer classes should extend this to utilize the convenience methods * collection() and item(), and make the self::$availableIncludes property available. * Extend it and add a `transform()` method to transform any default or included data * into a basic array. */

### 解决 ###

*  `借鉴了[github issue](https://github.com/spatie/laravel-fractal/issues/23) , 继承 League\Fractal\TransformerAbstract 实现tansformer功能 , 不在使用Dingo\Api\Contract\Transformer\Adapter`
 *  那么另外一个问题[官方Custom Transformation Layer][transformer] 到底是怎么用的呢? 后续继续研究

namespace App\Api\TransFormer; use App\Lesson; use League\Fractal\TransformerAbstract; class LessonTransformer extends TransformerAbstract { public function transform(Lesson $lesson) :array { return [ "id" => $lesson['id'], "title" => $lesson['title'], "content" => $lesson["body"], "is_free" => !!$lesson['free'] ]; } }

[dingo_api]: https://github.com/dingo/api
[tymondesigns_jwt-auth]: https://github.com/tymondesigns/jwt-auth/wiki/Creating-Tokens
[transformer]: https://github.com/dingo/api/wiki/Transformers
[github issue]: https://github.com/spatie/laravel-fractal/issues/23