/**
  * Store a newly created resource in storage.
  *
  * @param \Illuminate\Http\Request $request
  *
  * @return \Illuminate\Http\Response
  */
 public function store(Request $request)
 {
     $validator = Validator::make($request->all(), ['course' => 'required', 'description' => 'required|min:15', 'url' => 'required|url', 'section' => 'required']);
     if ($validator->fails()) {
         Alert::error('Oops', 'Invalid Inputs');
         return redirect('/dashboard');
     }
     $course = new Course();
     if (Course::where('course', '=', $request->get('course'))->exists()) {
         Alert::warning('Oops', 'Course Already Exists');
         return Redirect::back();
     }
     $course->slug = Str::slug($request->input('course'));
     $checkId = $course->video_id = $this->getVideoId($request->input('url'));
     $course->user_id = Auth::user()->id;
     if ($this->youtubeExist($checkId)) {
         $values = $request->all();
         $course->fill($values)->save();
         Alert::success('Good', 'Course created successfully!');
         return redirect('/dashboard');
     } else {
         Alert::error('Oops', 'Only Youtube Videos are allowed!');
         return redirect('/dashboard');
     }
 }