passar valor para controller ou view em laravel

public function treino()
    {
        $events = [];
        $data = treinos::all();
        if($data->count()) {
            foreach ($data as $key) { 

                $events[] = Calendar::event(

                    $key->wod,
                    true,
                    new \\\\DateTime($key->data_treino),

                    new \\\\DateTime($key->data_treino.'' +1 day''),
                    null,
                    // Add color and link on event
                    [ 
                        
                        ''color'' => ''#f05050'',

                        ''url'' => ''www.google.com'',

                        

                     

                        
                    ]
                );
            }
        }   
         
      $calendar = Calendar::addEvents($events);
    
        return view(''fullcalender'', compact(''calendar''));