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

Hooks

Allow modules to interact with the Drupal core.

10 functions implement hook_form_alter()

2 invocations 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')),
    );
  }
}