Question

I need to perform some operations by ajax before a node is submitted. So, how can I capture the node content and title which has been filled in by the user and pass it onto my ajax callback ?

Answer 1

Ok so here is the code-

So for this you need to specify “hello” as your callback function for the element for which the ajax attribute is being set.
For example if you want to call this by a button press-

$form['test'] = array(
        '#type' => 'button',
        '#value' => t("Testing"),
        '#ajax' => array(
            'callback' => 'hello_ajax',
            'wrapper' => 'newtable_div',
            'effect' => 'slide',
            ),
    );

then your callback function should be-

function hello_ajax($form, $form_state) {
  $output = '';
  $values = $form_state['values'];
  $title = $values['title'];
  $body = '';
  foreach ($values['body'][$values['language']] as $info) {
    $body .= $info['value'];
  }

  $content = check_plain($title) . ' ' . $body;

}

$content variable now holds the node title as well as node content, which you can use for further manipulations. cheers !! 🙂