50 Laravel Tricks in 50 Minutes

Laravel 5.1 raised the bar for framework documentation, but there's much, much more lurking beneath the surface. In this 50-minute session, we'll explore 50 (yes, 50!) high-leverage implementation tips & tricks that you just won't find in the docs: the IoC Container, Blade, Eloquent, Middleware, Routing, Commands, Queues, Events, Caching — we'll cover them all! Join us as we drink from the fire hose & learn to take advantage of everything that Laravel has to offer to build better software faster!
---
Presented on 11/19/2015 at PHP World

Transcript

1. View Slide

2. View Slide

3. View Slide

4. View Slide

5. View Slide

6. class Post extends Eloquent
   {
   public static $autoValidate = true;
   protected static $rules = array();
   protected static function boot()
   {
   parent::boot();
   // You can also replace this with static::creating or static::updating
   static::saving(function($model)
   {
   if ($model::$autoValidate)
   {
   return $model->validate();
   }
   });
   }
   public function validate()
   {
   }
   }
   

   View Slide

7. class Post extends Eloquent
   {
   protected static function boot()
   {
   parent::boot();
   static::updating(function($model)
   {
   return false;
   });
   }
   }
   

   View Slide

8. class myModel extents Model
   {
   public function category()
   {
   return $this->belongsTo('myCategoryModel', 'categories_id')
   ->where('users_id', Auth::user()->id);
   }
   }
   

   View Slide

9. $products = Product::where('category', '=', 3)->get();
   $products = Product::where('category', 3)->get();
   $products = Product::whereCategory(3)->get();
   

   View Slide

10. SELECT *, COUNT(*) FROM products GROUP BY category_id HAVING count(*) > 1;
    DB::table('products')
    ->select('*', DB::raw('COUNT(*) as products_count'))
    ->groupBy('category_id')
    ->having('products_count', '>' , 1)
    ->get();
    Product::groupBy('category_id')->havingRaw('COUNT(*) > 1')->get();
    

    View Slide

11. $q->whereDate('created_at', date('Y-m-d'));
    $q->whereDay('created_at', date('d'));
    $q->whereMonth('created_at', date('m'));
    $q->whereYear('created_at', date('Y'));
    

    View Slide

12. // src/Illuminate/Database/Eloquent/Model.php
    public function save(array $options = array())
    // src/Illuminate/Database/Eloquent/Model.php
    protected function performUpdate(Builder $query, array $options = [])
    {
    if ($this->timestamps && array_get($options, 'timestamps', true))
    {
    $this->updateTimestamps();
    }
    $product = Product::find($id);
    $product->updated_at = '2015-01-01 10:00:00';
    $product->save(['timestamps' => false]);
    

    View Slide

13. // app/Article.php
    class Article extends Model
    {
    use \Dimsav\Translatable\Translatable;
    public $translatedAttributes = ['name', 'text'];
    }
    // database/migrations/create_articles_table.php
    public function up()
    {
    Schema::create('articles', function (Blueprint $table) {
    $table->increments('id');
    $table->boolean('online');
    $table->timestamps();
    });
    }
    // resources/views/article.blade.php
    {{ $article->name }}
    {{ $article->text }}
    //database/migrations/create_articles_table.php
    public function up()
    {
    $table->increments('id');
    $table->integer('article_id')->unsigned();
    $table->string('locale')->index();
    $table->string('name');
    $table->text('text');
    $table->unique(['article_id','locale']);
    $table->foreign('article_id')->references('id')
    ->on('articles')
    ->onDelete('cascade');
    }
    // app/ArticleTranslation.php
    class ArticleTranslation extends Model
    {
    public $timestamps = false;
    }
    // app/http/routes.php
    Route::get('{locale}', function($locale) {
    app()->setLocale($locale);
    $article = Article::first();
    return view('article')->with(compact('article'));
    });
    http://50LaravelTricksIn50Minutes.com/fr -- French Translation
    

    View Slide

14. $questions = Question::orderByRaw('RAND()')->take(10)->get();
    

    View Slide

15. use Ramsey\Uuid\Uuid;
    trait UUIDModel
    {
    public $incrementing = false;
    protected static function boot()
    {
    parent::boot();
    static::creating(function ($model) {
    $key = $model->getKeyName();
    if (empty($model->{$key})) {
    $model->{$key} = (string) $model->generateNewId();
    }
    });
    }
    public function generateNewUuid()
    {
    return Uuid::uuid4();
    }
    }
    

    View Slide

16. View Slide

17. class Category extends Model
    {
    public function products()
    {
    return $this->hasMany('App\Product')->orderBy(‘name');
    }
    }
    

    View Slide

18. $customer = Customer::find($customer_id);
    $loyalty_points = $customer->loyalty_points + 50;
    $customer->update(['loyalty_points' => $loyalty_points]);
    // adds one loyalty point
    Customer::find($customer_id)->increment('loyalty_points', 50);
    // subtracts one loyalty point
    Customer::find($customer_id)->decrement('loyalty_points', 50);
    

    View Slide

19. $employees = Employee::where('branch_id', 9)->lists('name', 'id');
    return view('customers.create', compact('employees'));
    {!! Form::select('employee_id', $employees, '') !!}
    public function getFullNameAttribute() {
    return $this->name . ' ' . $this->surname;
    }
    [2015-07-19 21:47:19] local.ERROR: exception 'PDOException'
    with message 'SQLSTATE[42S22]: Column not found:
    1054 Unknown column 'full_name' in 'field list'' in
    ...vendor\laravel\framework\src\Illuminate\Database\Connection.php:288
    $employees = Employee::where('branch_id', 9)->get()->lists('full_name', 'id');
    

    View Slide

20. function getFullNameAttribute() {
    return $this->first_name . ' ' . $this->last_name;
    }
    {
    "id":1,
    "first_name":"Povilas",
    "last_name":"Korop",
    "email":"povilas@webcoderpro.com",
    "created_at":"2015-06-19 08:16:58",
    "updated_at":"2015-06-19 19:48:09"
    }
    class User extends Model
    {
    protected $appends = ['full_name'];
    {
    "id":1,
    "first_name":"Povilas",
    "last_name":"Korop",
    "email":"povilas@webcoderpro.com",
    "created_at":"2015-06-19 08:16:58",
    "updated_at":"2015-06-19 19:48:09",
    "full_name":"Povilas Korop"
    }
    

    View Slide

21. class Category extends Model
    {
    public function products() {
    return $this->hasMany('App\Product');
    }
    }
    public function getIndex() {
    $categories = Category::with('products')->has('products')->get();
    return view('categories.index', compact('categories'));
    }
    

    View Slide

22. public function store()
    {
    $post = new Post;
    $post->fill(Input::all());
    $post->user_id = Auth::user()->user_id;
    $post->user;
    return $post->save()
    }
    

    View Slide

23. View Slide

24. // eloquent
    Post::whereSlug('slug')->get();
    // instead of
    View::make('posts.index')->with(‘posts’, $posts);
    // do this
    View::make('posts.index')->withPosts($posts);
    

    View Slide

25. //hide all but the first item
    @foreach ($menu as $item)
    
    {{ $item->title }}
    
    @endforeach
    //apply css to last item only
    @foreach ($menu as $item)
    
    {{ $item->title }}
    
    @endforeach
    

    View Slide

26. View Slide

27. $devs = [
    ['name' => 'Anouar Abdessalam','email' => 'dtekind@gmail.com'],
    ['name' => 'Bilal Ararou','email' => 'have@noIdea.com']
    ];
    $devs = new Illuminate\Support\Collection($devs);
    $devs->first();
    $devs->last();
    $devs->push(['name' => 'xroot','email' => 'xroot@root.com']);
    

    View Slide

28. $customers = Customer::all();
    $us_customers = $customers->filter(function ($customer) {
    return $customer->country == 'United States';
    });
    $non_uk_customers = $customers->reject(function ($customer) {
    return $customer->country == 'United Kingdom';
    });
    

    View Slide

29. View Slide

30. // returns a single row as a collection
    $collection = App\Person::find([1]);
    // can return multiple rows as a collection
    $collection = App\Person::find([1, 2, 3]);
    

    View Slide

31. $collection = App\Person::all();
    $programmers = $collection->where('type', 'programmer');
    $critic = $collection->where('type', 'critic');
    $engineer = $collection->where('type', 'engineer');
    

    View Slide

32. $collection = App\Person::all();
    $names = $collection->implode('first_name', ',');
    

    View Slide

33. // returns a collection of first names
    $collection = App\Person::all()->where('type', 'engineer')->lists('first_name');
    // returns all the meta records for user 1
    $collection = App\WP_Meta::whereUserId(1)->get();
    // returns the first & last name meta values
    $first_name = $collection->where('meta_key', 'first_name')->lists('value')[0];
    $last_name = $collection->where('meta_key', 'last_name')->lists('value')[0];
    

    View Slide

34. class Link extends Model
    {
    public function users()
    {
    return $this->belongsToMany('Phpleaks\User')->withTimestamps();
    }
    }
    @if ($link->users->count() > 0)
    Recently Favorited By
    @foreach ($link->users()->orderBy('link_user.created_at', 'desc')->take(15)->get() as $user)
    
    {{ $user->name }}
    
    @endforeach
    @endif
    

    View Slide

35. $collection = collect([
    ['name' => 'Desk'],
    ['name' => 'Chair'],
    ['name' => 'Bookcase']
    ]);
    $sorted = $collection->sortBy(function ($product, $key)
    {
    return array_search($product['name'], [1=>'Bookcase', 2=>'Desk', 3=>'Chair']);
    });
    

    View Slide

36. $library = $books->keyBy('title');
    [
    'Lean Startup' => ['title' => 'Lean Startup', 'price' => 10],
    'The One Thing' => ['title' => 'The One Thing', 'price' => 15],
    'Laravel: Code Bright' => ['title' => 'Laravel: Code Bright', 'price' => 20],
    'The 4-Hour Work Week' => ['title' => 'The 4-Hour Work Week', 'price' => 5],
    ]
    

    View Slide

37. $collection = App\Person::all();
    $grouped = $collection->groupBy('type');
    

    View Slide

38. // the point is to actually combine results from different models
    $programmers = \App\Person::where('type', 'programmer')->get();
    $critic = \App\Person::where('type', 'critic')->get();
    $engineer = \App\Person::where('type', 'engineer')->get();
    $collection = new Collection;
    $all = $collection->merge($programmers)->merge($critic)->merge($engineer);
    

    View Slide

39. $collection = collect([1=>11, 5=>13, 12=>14, 21=>15])->getCachingIterator();
    foreach ($collection as $key => $value) {
    dump($collection->current() . ':' . $collection->getInnerIterator()->current());
    }
    

    View Slide

40. View Slide

41. View Slide

42. Route::group(['prefix' => 'account', 'as' => 'account.'], function () {
    Route::get('login', ['as' => 'login', 'uses' => 'AccountController@getLogin']);
    Route::get('register', ['as' => 'register', 'uses' => 'AccountController@getRegister']);
    Route::group(['middleware' => 'auth'], function () {
    Route::get('edit', ['as' => 'edit', 'uses' => 'AccountController@getEdit']);
    });
    });
    Login
    Register
    Edit Account
    

    View Slide

43. // app/Http/routes.php
    Route::group(['middleware' => 'auth'], function () {
    Route::get('{view}', function ($view) {
    try {
    return view($view);
    } catch (\Exception $e) {
    abort(404);
    }
    })->where('view', '.*');
    });
    

    View Slide

44. // api controller
    public function show(Car $car)
    {
    if (Input::has('fields')) {
    // do something
    }
    }
    // internal request to api - fields are lost
    $request = Request::create('/api/cars/' . $id . '?fields=id,color', 'GET');
    $response = json_decode(Route::dispatch($request)->getContent());
    // internal request to api - with fields
    $originalInput = Request::input();
    $request = Request::create('/api/cars/' . $id . '?fields=id,color', 'GET');
    Request::replace($request->input());
    $response = json_decode(Route::dispatch($request)->getContent());
    Request::replace($originalInput);
    

    View Slide

45. View Slide

46. // phpunit.xml
    
    
    
    
    
    
    
    
    
    // .env.test – add to .gitignore
    TWILIO_ACCOUNT_SID=fillmein
    TWILIO_ACCOUNT_TOKEN=fillmein
    // tests/TestCase.php
    class TestCase extends Illuminate\Foundation\Testing\TestCase
    {
    /**
    * The base URL to use while testing the application.
    *
    * @var string
    */
    protected $baseUrl = 'http://localhost';
    /**
    * Creates the application.
    *
    * @return \Illuminate\Foundation\Application
    */
    public function createApplication()
    {
    $app = require __DIR__.'/../bootstrap/app.php';
    if (file_exists(dirname(__DIR__) . '/.env.test')) {
    Dotenv::load(dirname(__DIR__), '.env.test');
    }
    $app->make(Illuminate\Contracts\Console\Kernel::class)->bootstrap();
    return $app;
    }
    }
    // access directly from your tests using helper function
    env('TWILIO_ACCOUNT_TOKEN');
    

    View Slide

47. // gulpfile.js
    var elixir = require('laravel-elixir');
    mix.phpUnit();
    $ gulp tdd
    

    View Slide

48. View Slide

49. // app/Http/Middleware/EncryptCookies.php
    protected $except = [
    'shared_cookie'
    ];
    Cookie::queue('shared_cookie', 'my_shared_value', 10080, null, '.example.com');
    

    View Slide

50. $ artisan make:model Books -m
    

    View Slide

51. $ composer require genealabs/laravel-sparkinstaller --dev
    //
    Laravel\Spark\Providers\SparkServiceProvider::class,
    GeneaLabs\LaravelSparkInstaller\Providers\LaravelSparkInstallerServiceProvider::class,
    // do not run php artisan spark:install
    $ php artisan spark:upgrade
    // backup /resources/views/home.blade.php or it will be overwritten
    $ php artisan vendor:publish --tag=spark-full
    

    View Slide

52. use Exception;
    use Illuminate\Foundation\Exceptions\Handler as ExceptionHandler;
    use Symfony\Component\Debug\ExceptionHandler as SymfonyDisplayer;
    class Handler extends ExceptionHandler
    {
    protected function convertExceptionToResponse(Exception $e)
    {
    $debug = config('app.debug', false);
    if ($debug) {
    return (new SymfonyDisplayer($debug))->createResponse($e);
    }
    return response()->view('errors.default', ['exception' => $e], 500);
    }
    }
    

    View Slide

53. // app/Providers/AppServiceProvider.php
    public function register()
    {
    $this->app->bind(
    'Illuminate\Contracts\Auth\Registrar',
    'App\Services\Registrar'
    );
    if ($this->app->environment('production')) {
    $this->app->register('App\Providers\ProductionErrorHandlerServiceProvider');
    } else {
    $this->app->register('App\Providers\VerboseErrorHandlerServiceProvider');
    }
    }
    

    View Slide

54. View Slide

55. public function up()
    {
    Schema::table('users', function($table)
    {
    $table->string('name', 50)->change();
    });
    }
    $ composer require doctrine/dbal
    

    View Slide

56. if (view()->exists('emails.' . $template))
    {
    // ... sending an email to the customer
    }
    

    View Slide

57. // bootstrap/app.php
    // replace this:
    $app = new Illuminate\Foundation\Application(
    realpath(__DIR__.'/../')
    );
    // with this:
    $app = new Fantabulous\Application(
    realpath(__DIR__.'/../')
    );
    class Application extends \Illuminate\Foundation\Application
    {
    /**
    * Get the path to the storage directory.
    *
    * @return string
    */
    public function storagePath()
    {
    return $this->basePath.'/FantabulousStorage';
    }
    }
    

    View Slide

58. class fakeApiCaller
    {
    public function getResultsForPath($path)
    {
    return [
    'status' => 200,
    'body' => json_encode([
    'title' => "Results for path [$path]"
    ]),
    'headers' => [
    "Content-Type" => "application/json"
    ]
    ];
    }
    }
    $app->get('{path?}', function($path)
    {
    $result = Cache::remember($path, 60, function() use ($path) {
    return (new fakeApiCaller)->getResultsForPath($path);
    });
    return response($result['body'], $result['status'], array_only(
    $result['headers'], ['Content-Type', 'X-Pagination']
    ));
    })->where('path', '.*');
    

    View Slide

59. $ composer create-project laravel/laravel your-project-name-here dev-develop
    // composer.json
    {
    "require": {
    "php": ">=5.5.9",
    "laravel/framework": "5.2.*"
    },
    "minimum-stability": "dev"
    }
    $ composer update
    

    View Slide

60. \DB::listen(function($query, $bindings, $time) {
    var_dump($query);
    var_dump($bindings);
    var_dump($time);
    });
    Event::listen('illuminate.query', function($query) {
    var_dump($query);
    });
    

    View Slide

61. // app/Policies/AdminPolicy.php
    class AdminPolicy
    {
    public function managePages($user)
    {
    return $user->hasRole(['Administrator', 'Content Editor']);
    }
    }
    // app/Providers/AuthServiceProvider.php
    public function boot(\Illuminate\Contracts\Auth\Access\GateContract $gate)
    {
    foreach (get_class_methods(new \App\Policies\AdminPolicy) as $method) {
    $gate->define($method, "App\Policies\AdminPolicy@{$method}");
    }
    $this->registerPolicies($gate);
    }
    $this->authorize('managePages'); // in Controllers
    @can('managePages') // in Blade Templates
    $user->can('managePages'); // via Eloquent
    

    View Slide

62. $disk= Storage::disk('s3');
    $disk->put($targetFile, file_get_contents($sourceFile));
    $disk = Storage::disk('s3');
    $disk->put($targetFile, fopen($sourceFile, 'r+'));
    $disk = Storage::disk('s3');
    $stream = $disk->getDriver()->readStream($sourceFileOnS3);
    file_put_contents($targetFile, stream_get_contents($stream), FILE_APPEND);
    $stream = Storage::disk('s3')->getDriver()->readStream($sourceFile);
    Storage::disk('sftp')->put($targetFile, $stream)
    

    View Slide

63. $schedule->call(function () {
    Storage::delete($logfile);
    })->weekly();
    

    View Slide

64. $result = (new Illuminate\Pipeline\Pipeline($container)
    ->send($something)
    ->through('ClassOne', 'ClassTwo', 'ClassThree')
    ->then(function ($something) {
    return 'foo';
    });
    

    View Slide

65. View Slide

66. View Slide

67. View Slide

68. class PurchasePodcastCommand extends Command
    {
    public $user;
    public $podcast;
    public function __construct(User $user, Podcast $podcast)
    {
    $this->user = $user;
    $this->podcast = $podcast;
    }
    }
    class PurchasePodcastCommandHandler
    {
    public function handle(BillingGateway $billing)
    {
    // Handle the logic to purchase the podcast...
    event(new PodcastWasPurchased($this->user, $this->podcast));
    }
    }
    class PodcastController extends Controller
    {
    public function purchasePodcastCommand($podcastId)
    {
    $this->dispatch(
    new PurchasePodcast(Auth::user(), Podcast::findOrFail($podcastId))
    );
    }
    }
    

    View Slide

69. class PurchasePodcast extends Command implements SelfHandling
    {
    protected $user;
    protected $podcast;
    public function __construct(User $user, Podcast $podcast)
    {
    $this->user = $user;
    $this->podcast = $podcast;
    }
    public function handle(BillingGateway $billing)
    {
    // Handle the logic to purchase the podcast...
    event(new PodcastWasPurchased($this->user, $this->podcast));
    }
    }
    class PodcastController extends Controller
    {
    public function purchasePodcast($podcastId)
    {
    $this->dispatch(
    new PurchasePodcast(Auth::user(), Podcast::findOrFail($podcastId))
    );
    }
    }
    

    View Slide

70. class PodcastController extends Controller
    {
    public function purchasePodcast(PurchasePodcastRequest $request)
    {
    $this->dispatchFrom('Fantabulous\Commands\PurchasePodcastCommand', $request);
    }
    }
    class PodcastController extends Controller
    {
    public function purchasePodcast(PurchasePodcastRequest $request)
    {
    $this->dispatchFrom('Fantabulous\Commands\PurchasePodcastCommand', $request, [
    'firstName' => 'Taylor',
    ]);
    }
    }
    

    View Slide

71. class PurchasePodcast extends Command
    implements ShouldBeQueued, SerializesModels
    {
    public $user;
    public $podcast;
    public function __construct(User $user, Podcast $podcast)
    {
    $this->user = $user;
    $this->podcast = $podcast;
    }
    }
    

    View Slide

72. // App\Providers\BusServiceProvider::boot
    $dispatcher->pipeThrough(['UseDatabaseTransactions', 'LogCommand']);
    class UseDatabaseTransactions
    {
    public function handle($command, $next)
    {
    return DB::transaction(function() use ($command, $next)
    {
    return $next($command);
    });
    }
    }
    // App\Providers\BusServiceProvider::boot
    $dispatcher->pipeThrough([function($command, $next)
    {
    return DB::transaction(function() use ($command, $next)
    {
    return $next($command);
    });
    }]);
    

    View Slide

73. View Slide

74. View Slide

75. View Slide

76. // app/http/routes.php
    Route::get('/api/posts/{post}', function(Post $post) {
    return $post;
    });
    // behind the scenes
    Post::findOrFail($post);
    

    View Slide

77. $schedule->command('emails:send')
    ->hourly()
    ->appendOutputTo($filePath);
    

    View Slide

78. // returns titles for all posts
    $titles = $posts->pluck(‘posts.*.title’);
    

    View Slide

79. 
    
    
    
    
    
    
    
    $v = Validator::make($request->all(), [
    'person.*.id' => 'exists:users.id',
    'person.*.name' => 'required:string',
    ]);
    

    View Slide

80. // included in database session driver
    user_id
    ip_address
    

    View Slide

81. View Slide

82. View Slide

83. View Slide