操縱返回的雄辯集合

Question

我是在Eloquent返回集合的假設下，所以下面的工作;

$all_locations = Service::getLocationsForService($service_id, 'all'); 

$chosen_locations = Service::getLocationsForService($service_id, $locations); 

$diff = $chosen_locations->diff($all_locations) 

但是我只是得到Call to undefined method Illuminate\Database\Query\Builder::diff()

難道這些https://laravel.com/docs/5.4/collections#available-methods只適用於做查詢，並沒有操縱已返回集合點？

包括查詢

public static function getLocationsForService($service_id, $locations) 
    { 
     if($locations[0] == 'all') { $locations[0] = ''; } 
     return Service::with(['types', 'contacts', 'locations.datetimes' =>function($q) use($service_id){ 
     $q->where('service_id', $service_id); 
     }, 'conditions', 'locations' => function($query) use($locations) { 

     $ran = false; 
     foreach($locations as $location) 
     { 
      if(!$ran) 
      { 
      $query->Where('town', 'like', '%'.$location.'%') 
      ->orWhere('city', 'like', '%'.$location.'%'); 
      } 
      else 
      { 
      $query->orWhere('town', 'like', '%'.$location.'%') 
      ->orWhere('city', 'like', '%'.$location.'%'); 
      } 
      $ran = true; 
      $query->Where('published', 1); 
     } 
     }])->find($service_id); 
    } 

Answer 1

你需要鏈get()方法來執行查詢，並得到一個集合。試試這個：

$all_locations = Service::getLocationsForService($service_id, 'all')->get();