Laravel 5.1 Move Uploaded File

I have a form with a file upload field and a hidden field to store the uploaded file name as follows:

<form enctype="multipart/form-data" action="http://localhost:8000/create" method="POST"> 
   // other form fields     

    <input id="img_logo" type="hidden" value="" name="img_logo">
    <input type="file" name="file" id="file" class="inputfile"/>
    <label for="file" class="btn btn-primary" >Upload</label>

    <div id="img-thumb"></div> 

    <input type="submit" value="Submit">
</form>

My ajax file upload method populates the filename of the hidden img_logo field as follows after a successful upload:

this.on("success", function(file, response) {
    $('input[name="img_logo"]').val(response.file);
    $("#img-thumb").html("<img src='/img/tmp/"+response.file+"' />");
}

This is the upload method which gets called when a file is uploaded

public function upload(Request $request) {

    if($request->hasFile('file')) {

        //upload an image to the /img/tmp directory and return the filepath.
        $file = $request->file('file');

        $tmpFileName = time() . '-' . $file->getClientOriginalName();

        $tmpFilePath = '/img/tmp/';

        Image::make($file->getRealPath())->resize(360, 180)->save(public_path($tmpFilePath) . $tmpFileName);

        return response()->json([
            'success' => true,
            'file' => $tmpFileName
        ] , 200);

    } 
    else {
            return response()->json(false, 200);
    }
} 

When I submit the form I want to move the image from img/tmp directory to img/logos directory and rename the file by prefixing the article id. I can determine if a file has been uploaded by checking the img_logo hidden input value as follows:

Public function create(Request $request)
{
   $article = Article::create($request->all());

   if ($request->has('img_logo')) {

        // How do i copy the file from img/tmp to img/logos with new name

        $fileName = $article->id . '-' . Request::input('img_logo');

        $article->img_logo = $fileName;

        $article->save();
    } 


}

via Chebli Mohamed