php-symfonyHow to use Collection with PHP Symfony?

Collection is a powerful tool for managing data in PHP Symfony. It allows you to store, manipulate and retrieve data in an efficient and organized way.

Example code

use Symfony\Component\Form\Extension\Core\Type\CollectionType;

$form = $this->createFormBuilder()
    ->add('tags', CollectionType::class, [
        'entry_type' => TextType::class,
        'allow_add' => true,
        'allow_delete' => true,
    ])
    ->getForm();

This example code creates a form with a collection field called 'tags'. The 'entry_type' option specifies the type of data that will be stored in the collection. The 'allow_add' and 'allow_delete' options enable users to add and delete entries from the collection.

Output example

Form object

Code explanation

• use Symfony\Component\Form\Extension\Core\Type\CollectionType; - imports the CollectionType class from the Symfony Form component
• $form = $this->createFormBuilder() - creates a new form builder object
• ->add('tags', CollectionType::class, [ - adds a collection field to the form
• 'entry_type' => TextType::class, - specifies the type of data that will be stored in the collection
• 'allow_add' => true, - enables users to add entries to the collection
• 'allow_delete' => true, - enables users to delete entries from the collection
• ->getForm(); - returns the form object

Helpful links

• Symfony Form Component Documentation
• CollectionType Class Documentation

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