public function equalsubject(Request $request)
 {
     // dd($request->equal_subject_id);
     foreach ($request->order_equal_subject_id as $key => $value) {
         $equal_subject = EqSub::findOrFail($value);
         if ($request->equal_subject_id[$key] != '') {
             $equal_subject->subject_id = $request->equal_subject_id[$key];
             // dd($equal_subject->subject_id);
             $equal_subject->status = 'accepted';
         } else {
             $equal_subject->status = 'refused';
         }
         $equal_subject->save();
     }
     return redirect()->back()->with('success', trans('orders::order.change_success'));
     // return redirect()->route('registration.equations.index')->with('success',trans('orders::order.change_success'));
 }