PHP

Using the Drupal Rooms "Availablity Search Block" Ajax overrides form action="/node-url" with action="/views/ajax". Workaround with hook_form_alter().

A common override that is not included in the default list is the page.tpl.php override based on the content type being displayed.

How to make specific PHP templates (.tpl.php) depending for fields, blocks, views, content types, pages and many other Drupal 7 elements.