How to work with Séssions at Silex

Question

Good night,

I have a question about how to include, change and delete data in the Silex Session. Its API documentation is very simple and without explanation.

Is the following:

I need to create a session containing an array of values I did so to create it:

$app['session']->set('container',['nome'=>'fulano', 'idade'=>21]);

Now the doubts begin.

1- How do I include more values in this Sesssion? Ex. city=>São Paulo

2- How do I change for example the age from 21 to 30?

3- How do I delete something? ex: name

4- How do I test if the key is created? Ex: If I want to test if the key age this set.

Thank you

Answer 1

After installing the Silex and read some articles on Symfony 2, I’ve come to a nice conclusion.

By default, it is only possible to include in the Symfony 2 values of the type chave/valor.

It’s like it’s meant to be used like this:

$app['session']->set('nome', 'Wallace');
$app['session']->set('idade', '24 anos');

But through a class called Symfony\Component\HttpFoundation\Session\Attribute\NamespacedAttributeBag, present in folder vendor (that is part of the dependencies of Silex), we can use the Session similar to a Namespace of PHP.

See test I performed as an example:

include_once 'vendor/autoload.php';

use Symfony\Component\HttpFoundation\Session\Attribute\NamespacedAttributeBag;

$app = new Silex\Application();

$app->register(new Silex\Provider\SessionServiceProvider());

$app->get('/hello/{name}', function ($name) use ($app) {

    // defino o valor que será utilizado como namespace
    $bag = new NamespacedAttributeBag('container');
    // adicionamos a instância da Bag    
    $app['session']->registerBag($bag);


    // definimos os valores do container
    $app['session']->set('container/nome', 'Wallace');
    $app['session']->set('container/idade', '24 anos');

    $data = $app['session']->get('container');

    var_dump($data); 
   //Resultado: array(2) { ["nome"]=> string(7) "Wallace" ["idade"]=> string(7) "24 anos" }


    return '';
});

$app->run();

That is to say:

$app['session']->set('container/nome', 'wallace');

is the same as:

$_SESSION['container']['nome'] = 'Wallace';

To end the day, I hope this helps!

Answers

1- How do I include more values in this Sesssion? Ex. city=>São Paulo

$app['session']->set('container/cidade', 'São Paulo');

2- How do I change for example the age from 21 to 30?

$app['session']->set('container/idade', '21');
echo $app['session']->get('container/idade'); // 21
$app['session']->set('container/idade', '30'); // define um novo valor

3- How do I delete something? ex: name

$app['session']->remove('container/nome');

4- How do I test if the key is created? Ex: If I want to test if the key age this set.

var_dump($app['session']->has('container/idade'))

And finally, to access the array with all the data

var_dump($app['session']->get('container'));