Validate handler to import a view

File

includes/admin.inc, line 777

admin.inc Provides the Views' administrative interface.

Code

function views_ui_import_validate($form, &$form_state) {
  $view = '';
  views_include('view');
  // Be forgiving if someone pastes views code that starts with '<?php'.
  if (substr($form_state['values']['view'], 0, 5) == '<?php') {
    $form_state['values']['view'] = substr($form_state['values']['view'], 5);
  }
  ob_start();
  eval($form_state['values']['view']);
  ob_end_clean();

  if (!is_object($view)) {
    return form_error($form['view'], t('Unable to interpret view code.'));
  }

  if (empty($view->api_version) || $view->api_version < 2) {
    // Check for some value that would only exist on a Views 1 view.
    if (isset($view->url) || isset($view->page) || isset($view->block)) {
      views_include('convert');
      $view = views1_import($view);
      drupal_set_message(t('You are importing a view created in Views version 1. You may need to adjust some parameters to work correctly in version 2.'), 'warning');
    }
    else {
      form_error($form['view'], t('That view is not compatible with this version of Views.'));
    }
  }
  elseif ($view->api_version > views_api_version()) {
    form_error($form['view'], t('That view is created for the version @import_version of views, but you only have @api_version', array(
      '@import_version' => $view->api_version,
      '@api_version' => views_api_version())));
  }

  // View name must be alphanumeric or underscores, no other punctuation.
  if (!empty($form_state['values']['name']) && preg_match('/[^a-zA-Z0-9_]/', $form_state['values']['name'])) {
    form_error($form['name'], t('View name must be alphanumeric or underscores only.'));
  }

  if ($form_state['values']['name']) {
    $view->name = $form_state['values']['name'];
  }

  $test = views_get_view($view->name);
  if ($test && $test->type != t('Default')) {
    form_set_error('', t('A view by that name already exists; please choose a different name'));
  }

  $view->init_display();

  $broken = FALSE;
  // Make sure that all plugins and handlers needed by this view actually exist.
  foreach ($view->display as $id => $display) {
    if (empty($display->handler) || !empty($display->handler->broken)) {
      drupal_set_message(t('Display plugin @plugin is not available.', array('@plugin' => $display->display_plugin)), 'error');
      $broken = TRUE;
      continue;
    }

    $plugin = views_get_plugin('style', $display->handler->get_option('style_plugin'));
    if (!$plugin) {
      drupal_set_message(t('Style plugin @plugin is not available.', array('@plugin' => $display->handler->get_option('style_plugin'))), 'error');
      $broken = TRUE;
    }
    else if ($plugin->uses_row_plugin()) {
      $plugin = views_get_plugin('row', $display->handler->get_option('row_plugin'));
      if (!$plugin) {
        drupal_set_message(t('Row plugin @plugin is not available.', array('@plugin' => $display->handler->get_option('row_plugin'))), 'error');
        $broken = TRUE;
      }
    }

    foreach (views_object_types() as $type => $info) {
      $handlers = $display->handler->get_handlers($type);
      if ($handlers) {
        foreach ($handlers as $id => $handler) {
          if ($handler->broken()) {
            drupal_set_message(t('@type handler @table.@field is not available.', array(
              '@type' => $info['stitle'],
              '@table' => $handler->table,
              '@field' => $handler->field,
            )), 'error');
            $broken = TRUE;
          }
        }
      }
    }
  }

  if ($broken) {
    form_set_error('', t('Unable to import view.'));
  }

  $form_state['view'] = &$view;
}