Allow preprocessed wrapper attributes on bootstrap_form_element()

form elements in grid layout and adding classes to the parent form-group, which I needed for some JS widgets.

Drupal is not build really well to handle the flexibility of styling in theme frameworks like bootstrap. So you can nurf the theme for Drupal, or you can extend Drupal to handle more options of bootstrap.

Here's an example of the form I was able to create using this method. With out this method, a bunch of theme overwrites would have had to of been written.

Really the patch just allows for some added (and optional) flexibility.

As for where "#parent_attributes" is being used, it's just used to initialize the $attributes variable, which you then use in the parent group.

You can see that here

  // ...
  $description = FALSE;                                                                                                                                       
  $tooltip = FALSE;  
  // Convert some descriptions to tooltips.
  // @see bootstrap_tooltip_descriptions setting in _bootstrap_settings_form()
  if (!empty($element['#description'])) {
    $description = $element['#description'];
    if (theme_get_setting('bootstrap_tooltip_enabled') && theme_get_setting('bootstrap_tooltip_descriptions') && $description === strip_tags($description) && strlen($description) <= 200) { 
      $tooltip = TRUE;  
      $attributes['data-toggle'] = 'tooltip'; 
      $attributes['title'] = $description; 
    } 
  }

 $output = '<div' . drupal_attributes($attributes) . '>' . "\n";  

 // ....

So really the patch just allows me to extend the parent div how ever I want in form API, instead of having to override it for each specific case (of which there are lots)

Example of my use in code:

  // setting class "row" and "star-rating" via #parent_attributes
  $form['review']['rating'] = array( 
    '#type' => 'numberfield', 
    '#title' => t('Overall Rating'),  
    '#title_display' => 'none',            
    '#required' => TRUE, 
    '#parent_attributes' => array(
      'class' => array('star-rating', 'row'),   
    ),     
    '#field_prefix' => '<div class="col-md-2 left"><p><b>'. t('Overall Rating') .'</b></p></div><div class="col-md-8 text-center"><div class="well well-sm">',
    '#field_suffix' => '</div></div>',   
    '#attributes' => array(
      'class' => array('rating'), 
      'data-min' => 1, 
      'data-max' => 5,
    ),  
  );  

(y) thanks.