t('How many checkboxes do you want?'), '#type' => 'select', '#options' => array(1=>1, 2=>2, 3=>3, 4=>4), '#default_value' => $default, '#ahah' => array( 'path' => 'examples/ahah_example/autocheckboxes/callback', 'wrapper' => 'checkboxes', 'effect' => 'fade', // 'event' => 'change', // default value: does not need to be set explicitly. ), ); $form['checkboxes'] = array( '#title' => t("Generated Checkboxes"), '#prefix' => '

', '#suffix' => '

', '#type' => 'fieldset', '#description' => t('This is where we get automatically generated checkboxes'), ); $num_checkboxes = !empty($form_state['values']['howmany']) ? $form_state['values']['howmany'] : 1; for ($i=1; $i<=$num_checkboxes; $i++) { $form['checkboxes']["checkbox$i"] = array( '#type' => 'checkbox', '#title' => "Checkbox $i", ); if (isset($form_state['values']["checkbox$i"])) { $form['checkboxes']["checkbox$i"]['#default_value'] = $form_state['values']["checkbox$i"]; } } $form['submit'] = array( '#type' => 'submit', '#value' => t('Click Me'), ); return $form; } /** * Submit handler for autocheckboxes. * Gets called even when our select is active, so we use the * $form_state to determine whether the submit handler should actually do * anything. */ function ahah_example_autocheckboxes_submit($form, &$form_state) { if (!empty($form_state['ahah_submission'])) { return; } // Continue to handle submit processing. } /** * Callback for autocheckboxes. Process the form with the number of checkboxes * we want to provide. */ function ahah_example_autocheckboxes_callback() { $form = ahah_example_callback_helper(); $checkboxes = $form['checkboxes']; // Remove the wrapper so we don't double it up. unset($checkboxes['#prefix'], $checkboxes['#suffix']); $output = theme('status_messages'); $output .= drupal_render($checkboxes); // Final rendering callback. print drupal_json(array('status' => TRUE, 'data' => $output)); exit(); }