Tagged services Per indicare che un servizio svolge un particolare ruolo in Symfony è possibile configurarlo aggiungendo uno o più tags alla sua definizione. Per esempio, etichettando un servizio con il tag twig.extension si indica a Symfony che il servizio…
The problem When a software handles multiple concurrent operations an entire class of problems arises. In our case multiple requests would try to update centralized information leading to unique constraint violations at the database level. That was because the code…
You all, at some point, faced the necessity to compare old and new values when storing an entity. Here is where Doctrine EntityListener comes at help. Let imagine you have this User entity
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<?php namespace App/Entity; class User { /** @var string $email */ private $email; public function getEmail(): string { return $this->email; } } |
and you want to notify the…
Il Page Object è un pattern utilizzato nei functional test per astrarre l’interazione con gli elementi della UI. All’interno di un oggetto vengono incapsulate le interazioni e le funzionalità di una pagina web che vengono esposte tramite api, nascondendo la…
Symfony form is a standalone component you can use to save a lot of time when developing an application that needs forms to interact with users (checkout my talk and slides from SfDayIt 2016 in Rome) As every powerful component/library/extension, power…
Today we are going to tackle a problem that I’ve recently faced with Symfony form types. Scenario: I need a choice type of a certain entity (Foo) with values that follows a certain logic
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<?php class FooChoiceType extends AbstractType { private $fooAdapter; public function __construct(FooAdapter $fooAdapter) { $this->fooAdapter = $fooAdapter; } function configureOptions(OptionsResolver $resolver) { $resolver->setDefaults([ 'required' => true, 'multiple' => false, 'choices' => $this->fooAdapter->getFoos(), ]); } public function getParent() { return ChoiceType::class; } } |
I’ve built up a FooChoiceType because…
Suppose that we have a value object or, more in general, an object where its data has been set in the constructor
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class Foo { protected $bar; protected $foobar; public function construct($bar, $foobar) { // .... } } |
and its FormType
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class FooType extends AbstractType { public function buildForm(FormBuilderInterface $builder, array $options) { $builder ->add('bar') ->add('foobar'); } // ... } |
Let’s assume that bar and foobar are taken from HTTP POST values (so, basically, we need those values to be posted…
Just a quick tip for assets versioning with Symfony2. Let’s imagine you have an asset, called “beautifulAsset.js”, in your app. As soon as it’s requested, the user browser caches it. So far so good. Problems arise when you change the…
