function layout_content_form_validate

Validate the layout settings form.

File

core/modules/layout/layout.admin.inc, line 1253

Admin page callbacks for the Layout module.

Code

function layout_content_form_validate($form, &$form_state) {
  /* @var Layout $layout */
  $layout = $form_state['layout'];

  // Ensure that the main page content block is only positioned once and that
  // default layouts include the main page content.
  $main_blocks_found = 0;
  foreach ($layout->content as $block) {
    if ($block->module === 'system' && $block->delta === 'main') {
      $main_blocks_found++;
    }
  }
  if ($main_blocks_found > 1) {
    form_error($form['content']['positions'], t('The "@block" block may only be added once to this layout.', array('@block' => t('Main page content'))));
  }
  elseif ($main_blocks_found === 0 && ($layout->name === 'default' || $layout->name === 'admin_default')) {
    form_error($form['content']['positions'], t('The "@block" block must be added to this layout.', array('@block' => t('Main page content'))));
  }

  // Ensure that no block is positioned more than once. This is merely a sanity
  // check, it should not occur within the normal interface.
  $all_uuids = array();
  foreach ($layout->positions as $uuids) {
    foreach ($uuids as $uuid) {
      if (in_array($uuid, $all_uuids)) {
        form_error($form['content']['positions'], t('The "@block" block has incorrectly been positioned multiple times. This may indicate an incorrectly saved layout configuration.', array('@block' => $layout->content[$uuid]->getAdminTitle())));
      }
      $all_uuids[] = $uuid;
    }
  }

  // Let the layout do any specific validations.
  $layout->formValidate($form, $form_state);
}