PHP code example of williamsampaio / slim-flash-messages

    
        
<?php
require_once('vendor/autoload.php');

/* Start to develop here. Best regards https://php-download.com/ */

    

williamsampaio / slim-flash-messages example snippets

// app/dependencies.php

//...
use SlimFlashMessages\Flash;
use SlimFlashMessages\FlashProviderInterface;

return function (ContainerBuilder $containerBuilder) {
    $containerBuilder->addDefinitions([
        //...
        FlashProviderInterface::class => function () {
            return Flash::getInstance();
        },
    ]);
};

// app/middleware.php

//...
// use SlimFlashMessages\FlashMiddleware;
use SlimFlashMessages\FlashTwigExtension;

return function (App $app) {
    //...
    // Optional if you are working with dependency injection,
    // using the middleware is only useful if you need to obtain the Flash instance from request.
    // $app->add(FlashMiddleware::createFromContainer($app));

    // With Twig
    $twig = Twig::create(__DIR__ . '/../templates', ['cache' => false]);
    $twig->addExtension(FlashTwigExtension::createFromContainer($app));
    $app->add(TwigMiddleware::create($app, $twig));
};

// Your controller

//...
use Slim\Views\Twig;
// use SlimFlashMessages\FlashProvider;
use SlimFlashMessages\FlashProviderInterface;

class YourController
{
    private $flash;
    private $view;

    public function __construct(FlashProviderInterface $flash, Twig $view)
    {
        $this->flash = $flash;
        $this->view = $view;
    }

    public function index(ServerRequestInterface $request, ResponseInterface $response)
    {
        // If you are working with middleware instead of dependency injection it will be this way.
        // $flash = FlashProvider::fromRequest($request);

        $this->flash->add('messages', 'Hello!');

        return $this->view->render($response, 'template.twig');
    }

    //...
}

use Psr\Http\Message\ResponseInterface as Response;
use Psr\Http\Message\ServerRequestInterface as Request;
use Slim\Factory\AppFactory;
use SlimFlashMessages\Flash;
use SlimFlashMessages\FlashMiddleware;
use SlimFlashMessages\FlashProvider;

lashMiddleware($flash));

$app->addErrorMiddleware(true, true, true);

$app->get('/', function (Request $request, Response $response, $args) {
    // Get FlashProvider from request
    // FlashMiddleware previously took care of adding the FlashProvider to the request
    $flash = FlashProvider::fromRequest($request);

    // Clear all stored values
    $flash->clearAll();

    // The 'add' method allows you to add a flash message or data (as an array, if you prefer!)
    $flash->add('simple', 'Hello World! 1');

    $flash->add('messages', [
        'status' => 'success',
        'text' => '1. PHP is the best!'
    ]);

    echo '<pre>';

    var_dump($flash->getAll());

    // Checks if the key is defined in the storage
    var_dump($flash->has('messages'));

    // Clear a key defined
    $flash->clear('messages');

    var_dump($flash->getAll());
    var_dump($flash->has('messages'));

    $flash->add('simple', 'Hello World! 2');
    $flash->add('simple', 'Hello World! 3');

    var_dump($flash->getAll());

    // Get first item from key
    var_dump($flash->get_first('simple'));
    // or to pick up and remove first item.
    // var_dump($flash->get_first('simple', true));

    // Get last item from key
    // var_dump($flash->get_last('simple'));
    // or to pick up and remove last item.
    var_dump($flash->get_last('simple', true));

    var_dump($flash->get('simple'));

    return $response;
});

$app->run();

use DI\Container;
use Psr\Http\Message\ResponseInterface as Response;
use Psr\Http\Message\ServerRequestInterface as Request;
use Slim\Factory\AppFactory;
use Slim\Views\Twig;
use Slim\Views\TwigMiddleware;
use SlimFlashMessages\Flash;
use SlimFlashMessages\FlashMiddleware;
use SlimFlashMessages\FlashProvider;
use SlimFlashMessages\FlashProviderInterface;
use SlimFlashMessages\FlashTwigExtension;

ate();

$app->setBasePath('/example2');  // Optional

// Add FlashMiddleware from container
$app->add(FlashMiddleware::createFromContainer($app));

// Create Twig and add FlashTwigExtension
$twig = Twig::create(__DIR__ . '/templates', ['cache' => false]);
$twig->addExtension(FlashTwigExtension::createFromContainer($app));

// Add Twig-View Middleware
$app->add(TwigMiddleware::create($app, $twig));

$app->addErrorMiddleware(true, true, true);

$app->get('/', function (Request $request, Response $response, $args) {
    // Get Twig and FlashProvider from request
    $view = Twig::fromRequest($request);

    // FlashMiddleware previously took care of adding the FlashProvider to the request
    $flash = FlashProvider::fromRequest($request, 'flash');

    $alerts = ['primary', 'secondary', 'success', 'danger', 'warning', 'info', 'light', 'dark'];

    // The 'add' method allows you to add a flash message or data (as an array, if you prefer!)
    $flash->add('simple', 'Hello World!');

    $flash->add('messages', [
        'alert' => $alerts[array_rand($alerts)],
        'text' => '1. PHP is the best!'
    ]);

    $flash->add('messages', [
        'alert' => $alerts[array_rand($alerts)],
        'text' => '2. Slim Framework is amazing!'
    ]);

    $flash->add('messages', [
        'alert' => $alerts[array_rand($alerts)],
        'text' => '3. Lorem ipsum!'
    ]);

    return $view->render($response, 'template.html.twig', [
        'page' => 'Slim Flash Messages',
    ]);
});

$app->run();