chapter 15 LessonController.php final

LessonController.php

<?php

namespace App\Http\Controllers;

use App\Http\AuthTraits\OwnsRecord;
use App\Http\Requests\LessonCreateRequest;
use Illuminate\Http\Request;
use App\Lesson;
use App\Category;
use App\Subcategory;
use Redirect;
use Illuminate\Support\Facades\Auth;
use App\Exceptions\UnauthorizedException;

class LessonController extends Controller
{
    use OwnsRecord;

    public function __construct()
    {

        $this->middleware('auth', ['except' => 'index'] );
        $this->middleware('admin', ['except' => ['index', 'show']] );

    }
    /**
     * Display a listing of the resource.
     *
     * @return \Illuminate\Http\Response
     */

    public function index()
    {

        return view('lesson.index');

    }

    /**
     * Show the form for creating a new resource.
     *
     * @return \Illuminate\Http\Response
     */

    public function create()
    {

        list($categories, $subcategories) = $this->getCategoryLists();

        return view('lesson.create', compact('categories', 'subcategories'));

    }

    /**
     * Store a newly created resource in storage.
     *
     * @param  \Illuminate\Http\Request  $request
     * @return \Illuminate\Http\Response
     */

    public function store(LessonCreateRequest $request)
    {

        $slug = str_slug($request->name, "-");

        $lesson = Lesson::create(['name' => $request->name,
                                  'slug' => $slug,
                                  'category_id' => $request->category_id,
                                  'subcategory_id' => $request->subcategory_id]);

        $lesson->save();

        alert()->success('Congrats!', 'You made a Lesson');

        return Redirect::route('lesson.index');

    }

    /**
     * Display the specified resource.
     *
     * @param  int  $id
     * @return \Illuminate\Http\Response
     */

    public function show(Lesson $lesson, $slug = '')
    {
        if ($lesson->slug !== $slug) {

            return Redirect::route('lesson.show', ['id' => $lesson->id,
                                                   'slug' => $lesson->slug],
                                                   301);

        }
        $category = Category::where('id', $lesson->category_id)->first();

        $subcategory = Subcategory::where('id', $lesson->subcategory_id)->first();



        return view('lesson.show', compact('lesson', 'category', 'subcategory'));
    }

    /**
     * Show the form for editing the specified resource.
     *
     * @param  int  $id
     * @return \Illuminate\Http\Response
     */

    public function edit(Lesson $lesson)
    {

        $category = Category::where('id', $lesson->category_id)->first();

        $subcategory = Subcategory::where('id', $lesson->subcategory_id)->first();

        list($categories, $subcategories) = $this->getCategoryLists();

        return view('lesson.edit', compact('lesson',
                                           'category',
                                           'subcategory',
                                           'categories',
                                           'subcategories'));
    }

    /**
     * Update the specified resource in storage.
     *
     * @param  \Illuminate\Http\Request  $request
     * @param  int  $id
     * @return \Illuminate\Http\Response
     */

    public function update(Request $request, Lesson $lesson)
    {

        $this->validate($request, [
            'name' => 'required|string|max:40|unique:widgets,name,' .$lesson->id,
            'category_id' => 'required|numeric|isValidCategory',
            'subcategory_id' => 'required|belongsToCategory'

        ]);


        $slug = str_slug($request->name, "-");

        $lesson->update(['name' => $request->name,
                         'slug' => $slug,
                         'category_id' => $request->category_id,
                         'subcategory_id' => $request->subcategory_id]);

        alert()->success('Congrats!', 'You updated a lesson');

        return Redirect::route('lesson.show', ['lesson' => $lesson, 'slug' =>$slug]);
    }

    /**
     * Remove the specified resource from storage.
     *
     * @param  int  $id
     * @return \Illuminate\Http\Response
     */

    public function destroy($id)
    {
        Lesson::destroy($id);

        alert()->overlay('Attention!', 'You deleted a lesson', 'error');

        return Redirect::route('lesson.index');

    }

    /**
     * @return array
     */

    private function getCategoryLists()
    {
        $categories = Category::all();

        $subcategories = Subcategory::all();

        return [$categories, $subcategories];
    }
}