laravel Element ORM 결과에 대한 컬렉션 기능은 항상 빈 컬렉션을 반환합니다.

Question

나는 Eloquent ORM 컬렉션 결과의 id, name 및 pic_thumbnail 열만 반환하려고합니다. get()의 결과에 only()을 사용합니다. 하지만 나는 항상 빈 컬렉션을 얻는다. manual의 예에 따르면

public function models() 
{ 
    if(!isset($_SESSION["uid"])) 
     return Response::json(['error' => 'please login.']); 
    $models = Model::where('user_id', $_SESSION["uid"])->get(); 
    Log::info($models); 
    Log::info($models->only(['id', 'name'])); 
    Log::info($models->only(['id', 'name'])->all()); 
    foreach($models as $model){ 
     $pic = $model->pics()->orderBy('displayorder')->first(); 
     if($pic == null) 
      $model->pic_thumbnail = 'static/thumbnail_no_image.jpg'; 
     else 
      $model->pic_thumbnail = $pic->imgfilename('thumbnail'); 
    } 

    Log::info($models); 
    Log::info($models->only(['id', 'name', 'pic_thumbnail'])); 
    Log::info($models->only(['id', 'name', 'pic_thumbnail'])->all()); 
    return Response::json(['models' => $models->only(['id', 'name', 'pic_thumbnail'])->all()]); 
} 

로그

,

[2017-11-13 11:29:34] local.INFO: [{"id":83,"name":"ssss","description":"sssssssssss","category":3,"internalcomment":"","rating_editor":"4","created_at":"2017-08-30 01:29:49","updated_at":"2017-08-30 01:29:50","deleted_at":null,"zipall_name":"ssss.zip","zipall_size":770146,"zipall_md5":"b10a0462e6010659ba210bb09487b42a","user_id":52,"price":null},{"id":105,"name":"asdfasad","description":"12","category":2,"internalcomment":"","rating_editor":"4","created_at":"2017-10-26 15:22:02","updated_at":"2017-10-26 15:22:02","deleted_at":null,"zipall_name":"asdfasad.zip","zipall_size":10545,"zipall_md5":"7f1b88e67ce98a6499f06d6d7cd3e530","user_id":52,"price":null},{"id":122,"name":"oooooooooo","description":"oooooooooo","category":2,"internalcomment":"","rating_editor":"4","created_at":"2017-11-03 10:17:08","updated_at":"2017-11-03 10:19:03","deleted_at":null,"zipall_name":"oooooooooo.zip","zipall_size":21242,"zipall_md5":"9177faf7ae2c4b7c12f9208a99690130","user_id":52,"price":0.01},{"id":123,"name":"skull","description":"skull demon","category":2,"internalcomment":"","rating_editor":"4","created_at":"2017-11-08 11:08:30","updated_at":"2017-11-08 11:08:30","deleted_at":null,"zipall_name":"skull.zip","zipall_size":299086,"zipall_md5":"22fe1047b13630ffcc0be115634ce167","user_id":52,"price":0}] 
[2017-11-13 11:29:34] local.INFO: [] 
[2017-11-13 11:29:34] local.INFO: array (
) 
[2017-11-13 11:29:34] local.INFO: [{"id":83,"name":"ssss","description":"sssssssssss","category":3,"internalcomment":"","rating_editor":"4","created_at":"2017-08-30 01:29:49","updated_at":"2017-08-30 01:29:50","deleted_at":null,"zipall_name":"ssss.zip","zipall_size":770146,"zipall_md5":"b10a0462e6010659ba210bb09487b42a","user_id":52,"price":null,"pic_thumbnail":"static\/thumbnail_no_image.jpg"},{"id":105,"name":"asdfasad","description":"12","category":2,"internalcomment":"","rating_editor":"4","created_at":"2017-10-26 15:22:02","updated_at":"2017-10-26 15:22:02","deleted_at":null,"zipall_name":"asdfasad.zip","zipall_size":10545,"zipall_md5":"7f1b88e67ce98a6499f06d6d7cd3e530","user_id":52,"price":null,"pic_thumbnail":"\/data\/pic\/thumbnail\/0\/183.jpg"},{"id":122,"name":"oooooooooo","description":"oooooooooo","category":2,"internalcomment":"","rating_editor":"4","created_at":"2017-11-03 10:17:08","updated_at":"2017-11-03 10:19:03","deleted_at":null,"zipall_name":"oooooooooo.zip","zipall_size":21242,"zipall_md5":"9177faf7ae2c4b7c12f9208a99690130","user_id":52,"price":0.01,"pic_thumbnail":"\/data\/pic\/thumbnail\/0\/229.jpg"},{"id":123,"name":"skull","description":"skull demon","category":2,"internalcomment":"","rating_editor":"4","created_at":"2017-11-08 11:08:30","updated_at":"2017-11-08 11:08:30","deleted_at":null,"zipall_name":"skull.zip","zipall_size":299086,"zipall_md5":"22fe1047b13630ffcc0be115634ce167","user_id":52,"price":0,"pic_thumbnail":"\/data\/pic\/thumbnail\/0\/231.jpg"}] 
[2017-11-13 11:29:34] local.INFO: [] 
[2017-11-13 11:29:34] local.INFO: array (
) 

Answer 1

. 컬렉션의 컬렉션이 아닌 단일 컬렉션에서만 작동하는 것처럼 보입니다.

다음과 같이해야한다고 생각합니다.

$results = $models->map(function($model) { 
    return $model->only(['id', 'name']); 
});