Same name and namespace in other branches
- 10 core/lib/Drupal/Core/Form/form.api.php \hook_form_alter()
- 5.x developer/hooks/core.php \hook_form_alter()
- 6.x developer/hooks/core.php \hook_form_alter()
- 7.x modules/system/system.api.php \hook_form_alter()
- 8.9.x core/lib/Drupal/Core/Form/form.api.php \hook_form_alter()
- 9 core/lib/Drupal/Core/Form/form.api.php \hook_form_alter()
Perform alterations before a form is rendered. One popular use of this hook is to add form elements to the node form.
Parameters
$form_id: String representing the name of the form itself. Typically this is the name of the function that generated the form.
$form: Nested array of form elements that comprise the form.
Return value
None.
Related topics
10 functions implement hook_form_alter()
Note: this list is generated by pattern matching, so it may include some functions that are not actually implementations of this hook.
- comment_form_alter in modules/
comment.module - forum_form_alter in modules/
forum.module - Implementation of hook_form_alter().
- menu_form_alter in modules/
menu.module - Implementation of hook_form_alter(). Add menu item fields to the node form.
- multipage_form_example_form_alter in developer/
examples/ multipage_form_example.module - Implementation of hook_form_alter(). Here, we set up the 'page' field, which keeps track of what stage the form is in.
- nodeapi_example_form_alter in developer/
examples/ nodeapi_example.module - Implementation of hook_form_alter().
File
- developer/
hooks/ core.php, line 427 - These are the hooks that are invoked by the Drupal core.
Code
function hook_form_alter($form_id, &$form) {
if (isset($form['type']) && $form['type']['#value'] . '_node_settings' == $form_id) {
$form['workflow']['upload_' . $form['type']['#value']] = array(
'#type' => 'radios',
'#title' => t('Attachments'),
'#default_value' => variable_get('upload_' . $form['type']['#value'], 1),
'#options' => array(
t('Disabled'),
t('Enabled'),
),
);
}
}