Laravel 5 single rout multiple controller method

I have a route with parameter

Route::get('forum/{ques}', "ForumQuestionsController@show");

Now i want a route something like

Route::get('forum/add', ['middleware' => 'auth:student', 'uses' => "ForumQuestionsController@add"]);

well when i hit localhost:800/forum/add I get routed to ForumQuestionsController@show instead of ForumQuestionsController@add

Well I know I can handle this in show method of ForumQuestionsController and return a different view based on the paramter. But I want it in this way.

via Chebli Mohamed