public function destroy(Annoucement $annoucement)
 {
     if (!Entrust::can('delete_annoucement')) {
         return redirect('/dashboard')->withErrors(config('constants.NA'));
     }
     if (!Helper::getMode()) {
         return redirect()->back()->withErrors(config('constants.DISABLE_MESSAGE'));
     }
     Helper::deleteCustomField($this->form, $annoucement->id);
     $annoucement->delete();
     $activity = 'Deleted a annoucement';
     Activity::log($activity);
     return redirect('/annoucement')->withSuccess(config('constants.DELETED'));
 }