Laravel - 通过jQuery加载模板时无法访问控制器

Question

I need to load a template through jQuery.load() which I'm doing like this in routes/web.php:

Route::get('/steamfriends/{q}', function($q) {
    return View::make('steamfriends_list')->with("SteamFriends", Steam::user($q)->GetFriendList());
});

Then with jQuery in the main template:

<script type="text/javascript">
    $(document).ready(function() {
        $('.uiFL').load('/steamfriends/{{ $user->steamId }}', callback);

        function callback()
         {
           $(".loading").hide();
         }
      });
</script>

Then in the steamfriends template (this is all content in it):

@forelse($SteamFriends as $friends)
<div class="box">
    <ul>
        <li>
            <div class="item_start" style="width:100%">
                @if(app\Http\Controllers\MyController::MyFunction($friends->steamId)) Hello World @endif
            </div>
        </li>
    </ul>
</div>
@empty
<i>No data available.</i>
@endforelse

But the problem here is that I can't access MyController, it gives me an error that the class is not found. How would I, in the easiest way, access the function that MyController holds?