php - Laravel deleting polymorph relations having possibly wrong relations -

i have model represents report user. report model has polymorphic relationship can contain either recipe or comment.

the goal able delete comment or user , have related reports removed eloquent.

with current setup (seen below) not work, when deleting comment report remains , causes error since points non-existing comment.

what doing wrong? need "belongsto" relationship on polymorphic model? if how build relationship when relation morphable?

---

models

polymorphic model

class report extends model {     public function reportable() {         return $this->morphto();     }      public function user() {         return $this->belongsto('app\user');     } } 

recipe model

class recipe extends model {     public function user() {         return $this->belongsto('app\user');     }      public function reports() {         return $this->morphmany('app\report', 'reportable');     } } 

comment model

class recipecomment extends model {        public function user() {         return $this->belongsto('app\user');     }      public function reports() {         return $this->morphmany('app\report', 'reportable');     } } 

laravel doesn't have built in automatically delete related records. need build functionality yourself, can done using model events. typically, setup deleting event takes care of deleting related records inside transaction.

a laravel 5 model observer this:

class recipecommentobserver {     public function deleting($model) {         try {             db::transaction(function() use ($model) {                 /**                  * try delete necessary related objects when object deleted.                  */                  // detach many-manys model, delete                 // records in pivot table.                 // e.g. if had many-many relationship named 'tags':                 // $model->tags()->detach();                  // one-one , one-many relations try , delete                 // example, want 'reports' here.                 // don't delete user when deleting comment.                 $relations = ['reports'];                  foreach ($relations $relation) {                     // list of related ids relation                     $ids = $model->$relation()->lists('id');                      // use ->destroy method events fired deleted objects                     // if amount deleted less expected, error occurred                     if (!empty($ids) && $model->$relation()->getrelated()->destroy($ids) < count($ids)) {                         throw new exception('error occurred deleting ' . $relation);                     }                 }             });         } catch (exception $e) {             throw $e;         }     } } 

with class setup, register observer in boot() method in app/providers/eventserviceprovider.php:

public function boot(dispatchercontract $events) {     parent::boot($events);      recipecomment::observe(new recipecommentobserver()); }