php - Laravel Fractal Manager -

i wrote transformer class outputting data in api:

apptransformer:

<?php namespace app\transformer;  use app\classes\aed; use league\fractal\transformerabstract;  class aedtransformer extends transformerabstract {     public function transform(aed $aed) {         return [             'owner' => $aed->owner,             'street' => $aed->street,             'latitude' => $aed->latitude,             'longitude' => $aed->longitude,             'annotationtype' => $aed->annotation_type         ];     } } 

and controller method data requested:

controller:

// show specific aed public function show($id) {     // find aed id     $aed = aed::find($id);     $rawdata = $this->respondwithitem($aed, new aedtransformer);     $meta = ['meta' => 'testmeta'];     $data = array_merge($rawdata, $meta);      if (!$aed) {         return $this->respondnotfound("aed existiert nicht.");     }      return $data; } 

when call url error:

errorexception in aedtransformer.php line 16: argument 1 passed app\transformer\aedtransformer::transform() must instance of app\classes\aed, null given, called in /home/vagrant/projects/mfserver/vendor/league/fractal/src/scope.php on line 307 , defined

aed class:

<?php namespace app\classes;  use illuminate\database\eloquent\model;  class aed extends model {      protected $table = 'aeds';     protected $fillable = ['owner', 'street', 'postal_code', 'locality', 'latitude', 'longitude', 'annotation_type'];     public $timestamps = true;      public $id;     public $owner;     public $object;     public $street;     public $postalcode;     public $locality;     public $latitude;     public $longitude;     public $annotation_type;     public $distance;      public function set($data) {         foreach ($data $key => $value) {             $this->{$key} = $value;         }     } } 

i think must "extends model" in aed class not see reason why. extension. or @ wrong place , understand message wrongly?

you getting error because $aed = aed::find($id); returning null means record doesn't exists.

you

public function show($id) {     // find aed id      $aed = aed::find($id);      if (!$aed) { //just sure        return $this->respondnotfound("aed existiert nicht.");     }       $rawdata = $this->respondwithitem($aed, new aedtransformer);     $meta = ['meta' => 'testmeta'];     $data = array_merge($rawdata, $meta);      return $data; }