How To Hide the Contact Button and Replace with a Message

Question

I'm building a room letting website. Next to every advert is a send user private message button.

If the room is no longer available. I want to replace the button with the message "Sorry room no longer available" how can I do this please?

Many Thanks for your help Charles

Answer 1

You can use hook_form_alter. Find your form name and use the code below (form api doc).

function yourmodule_form_alter(&$form, &$form_state, $form_id) {
if($form_id=='your_form_id'){
 hide($form['#submit']);
$form['mymessage']= array(
   '#type' => 'markup',
   '#markup' => 'sorry , no one available in room',
   '#weight' => 0,
);
}
}