Quartz sync: May 6, 2024, 10:40 PM

content/20201117103506-callback_functions_to_get_set_form_fields.md

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+---
+id: 7d7fc5e8-0fcd-47d7-8857-3f499655d7f2
+title: Callback Functions To Get/Set Form Fields
+---
+
+# Description
+
+Use callback functions to get/set form fields. Data mapper is no longer
+needed when getter/setter methods don't directly correlate to property
+names.
+
+# Syntax
+
+``` php
+// src/Form/Type/ProductType.php
+namespace App\Form\Type;
+
+use App\Entity\Person;
+use Symfony\Component\Form\Extension\Core\Type\TextType;
+use Symfony\Component\Form\FormBuilderInterface;
+use Symfony\Component\Form\FormInterface;
+
+class PersonType extends AbstractType
+{
+    public function buildForm(FormBuilderInterface $builder, array $options)
+    {
+        $builder
+            ->add('name', TextType::class, [
+                'getter' => function (Person $person, FormInterface $form): string {
+                    return $person->getUserData()->getFirstName();
+                },
+                'setter' => function (Person &$person, ?string $name, FormInterface $form): void {
+                    $person->rename($name);
+                },
+            ])
+
+            // ...
+        ;
+    }
+
+    // ...
+}
+```