如何测试Laravel 4中的下载按钮？

I'm really don't understand why, my application still allow the download even after I comment out the return statement. Wired !!

My route for the download look like this

Route::get('catalog_downloads/{id}/download','CatalogDownloadController@file_download');

I have a Download button that trigger a modal fill with a short instructions, after they click Ok, Got it that when I allow them to download.

Here is my download button

<a class="black" data-toggle="modal" data-target="#instruction">
                            <b class="cool-blue">
                                Download
                            </b>

                        </a>

Here is my Ok, Get it button

<a href="/catalog_downloads/{{$catalog_download->id}}/download" class="btn btn-success btn-sm btn-next">
                        Ok, Got it.
                        <i class="fa fa-thumbs-up"></i>
                    </a>

My Download Function in my controller

public function file_download($id)
    {

        $catalog_download = CatalogDownload::findOrFail($id);
        $distributor      = Auth::user()->distributor()->first();
        $export_type      = $distributor->export_type()->first();
        $product_export =  $catalog_download->product_exports()->first();

        $destinationPath  = base_path().'/app/files/product_export/'. $catalog_download->id.'/'. $export_type->id.'/';
        $file_name        = $product_export->file_path;
        $pathToFile       = $destinationPath .$file_name;

        // return Response::download($pathToFile);


    }

Is it because of modal that cause all of these ? Did I do anything that I'm not suppose somewhere ? Can someone tell me what did I missed ? :(

Make sure you hit save and refresh the page.

If possible, log out, and re-logged back in, and see if you still experience that issue.

Try testing with a INCOGNITO Window on Google Chrome or a Private Window on Firefox, so that you make sure that there is no cache, session or cookies from previous sessions.