[Form] Add a placeholder_attr option to ChoiceType

reference/forms/types/choice.rst

@@ -212,6 +212,8 @@ the ``Choice`` constraint behave like a ``NotChoice`` constraint.
 
 .. include:: /reference/forms/types/options/placeholder.rst.inc
 
+.. include:: /reference/forms/types/options/placeholder_attr.rst.inc
+
 .. include:: /reference/forms/types/options/preferred_choices.rst.inc
 
 Overridden Options
@@ -311,6 +313,8 @@ Field Variables
 | placeholder                | ``mixed``    | The empty value if not already in the list, otherwise             |
 |                            |              | ``null``.                                                         |
 +----------------------------+--------------+-------------------------------------------------------------------+
+| placeholder_attr           | ``array``    | The value of the `placeholder_attr`_ option.                      |
++----------------------------+--------------+-------------------------------------------------------------------+
 | choice_translation_domain  | ``mixed``    | ``boolean``, ``null`` or ``string`` to determine if the value     |
 |                            |              | should be translated.                                             |
 +----------------------------+--------------+-------------------------------------------------------------------+

reference/forms/types/country.rst

@@ -81,6 +81,8 @@ These options inherit from the :doc:`ChoiceType </reference/forms/types/choice>`
 
 .. include:: /reference/forms/types/options/placeholder.rst.inc
 
+.. include:: /reference/forms/types/options/placeholder_attr.rst.inc
+
 .. include:: /reference/forms/types/options/preferred_choices.rst.inc
 
 .. include:: /reference/forms/types/options/choice_type_trim.rst.inc

reference/forms/types/currency.rst

@@ -62,6 +62,8 @@ These options inherit from the :doc:`ChoiceType </reference/forms/types/choice>`
 
 .. include:: /reference/forms/types/options/placeholder.rst.inc
 
+.. include:: /reference/forms/types/options/placeholder_attr.rst.inc
+
 .. include:: /reference/forms/types/options/preferred_choices.rst.inc
 
 .. include:: /reference/forms/types/options/choice_type_trim.rst.inc

reference/forms/types/entity.rst

@@ -256,6 +256,8 @@ Doctrine's Array Collection.
 
 .. include:: /reference/forms/types/options/placeholder.rst.inc
 
+.. include:: /reference/forms/types/options/placeholder_attr.rst.inc
+
 ``preferred_choices``
 ~~~~~~~~~~~~~~~~~~~~~
 

reference/forms/types/enum.rst

@@ -78,6 +78,8 @@ These options inherit from the :doc:`ChoiceType </reference/forms/types/choice>`
 
 .. include:: /reference/forms/types/options/placeholder.rst.inc
 
+.. include:: /reference/forms/types/options/placeholder_attr.rst.inc
+
 .. include:: /reference/forms/types/options/preferred_choices.rst.inc
 
 .. include:: /reference/forms/types/options/choice_type_trim.rst.inc

reference/forms/types/language.rst

@@ -98,6 +98,8 @@ These options inherit from the :doc:`ChoiceType </reference/forms/types/choice>`
 
 .. include:: /reference/forms/types/options/placeholder.rst.inc
 
+.. include:: /reference/forms/types/options/placeholder_attr.rst.inc
+
 .. include:: /reference/forms/types/options/preferred_choices.rst.inc
 
 .. include:: /reference/forms/types/options/choice_type_trim.rst.inc

reference/forms/types/locale.rst

@@ -75,6 +75,8 @@ These options inherit from the :doc:`ChoiceType </reference/forms/types/choice>`
 
 .. include:: /reference/forms/types/options/placeholder.rst.inc
 
+.. include:: /reference/forms/types/options/placeholder_attr.rst.inc
+
 .. include:: /reference/forms/types/options/preferred_choices.rst.inc
 
 .. include:: /reference/forms/types/options/choice_type_trim.rst.inc

reference/forms/types/options/placeholder_attr.rst.inc

@@ -0,0 +1,21 @@
+``placeholder_attr``
+~~~~~~~~~~~~~~~~~~~~
+
+**type**: ``array`` **default**: ``[]``
+
+Use this to add additional HTML attributes to the placeholder choice::
+
+    use Symfony\Component\Form\Extension\Core\Type\ChoiceType;
+    // ...
+
+    $builder->add('fruits', ChoiceType::class, [
+        // ...
+        'placeholder' => '...',
+        'placeholder_attr' => [
+            ['title' => 'Choose an option'],
+        ],
+    ]);
+
+.. versionadded:: 6.3
+
+    The ``placeholder_attr`` option was introduced in Symfony 6.3.

reference/forms/types/timezone.rst

@@ -92,6 +92,8 @@ These options inherit from the :doc:`ChoiceType </reference/forms/types/choice>`
 
 .. include:: /reference/forms/types/options/placeholder.rst.inc
 
+.. include:: /reference/forms/types/options/placeholder_attr.rst.inc
+
 .. include:: /reference/forms/types/options/preferred_choices.rst.inc
 
 .. include:: /reference/forms/types/options/choice_type_trim.rst.inc