PHP ViewExecutable::preview方法代码示例

 /**
  * Tests the mapping of fields.
  *
  * @param \Drupal\views\ViewExecutable $view
  *   The view to test.
  *
  * @return string
  *   The view rendered as HTML.
  */
 protected function mappedOutputHelper($view)
 {
     $output = $view->preview();
     $rendered_output = \Drupal::service('renderer')->renderRoot($output);
     $this->storeViewPreview($rendered_output);
     $rows = $this->elements->body->div->div->div;
     $data_set = $this->dataSet();
     $count = 0;
     foreach ($rows as $row) {
         $attributes = $row->attributes();
         $class = (string) $attributes['class'][0];
         $this->assertTrue(strpos($class, 'views-row-mapping-test') !== FALSE, 'Make sure that each row has the correct CSS class.');
         foreach ($row->div as $field) {
             // Split up the field-level class, the first part is the mapping name
             // and the second is the field ID.
             $field_attributes = $field->attributes();
             $name = strtok((string) $field_attributes['class'][0], '-');
             $field_id = strtok('-');
             // The expected result is the mapping name and the field value,
             // separated by ':'.
             $expected_result = $name . ':' . $data_set[$count][$field_id];
             $actual_result = (string) $field;
             $this->assertIdentical($expected_result, $actual_result, format_string('The fields were mapped successfully: %name => %field_id', array('%name' => $name, '%field_id' => $field_id)));
         }
         $count++;
     }
     return $rendered_output;
 }

 /**
  * Asserts a view's result & output cache items' cache tags.
  *
  * @param \Drupal\views\ViewExecutable $view
  *   The view to test, must have caching enabled.
  * @param null|string[] $expected_results_cache
  *   NULL when expecting no results cache item, a set of cache tags expected
  *   to be set on the results cache item otherwise.
  * @param bool $views_caching_is_enabled
  *   Whether to expect an output cache item. If TRUE, the cache tags must
  *   match those in $expected_render_array_cache_tags.
  * @param string[] $expected_render_array_cache_tags
  *   A set of cache tags expected to be set on the built view's render array.
  *
  * @return array
  *   The render array
  */
 protected function assertViewsCacheTags(ViewExecutable $view, $expected_results_cache, $views_caching_is_enabled, array $expected_render_array_cache_tags)
 {
     $build = $view->preview();
     // Ensure the current request is a GET request so that render caching is
     // active for direct rendering of views, just like for actual requests.
     /** @var \Symfony\Component\HttpFoundation\RequestStack $request_stack */
     $request_stack = \Drupal::service('request_stack');
     $request_stack->push(new Request());
     \Drupal::service('renderer')->renderRoot($build);
     $request_stack->pop();
     // Render array cache tags.
     $this->pass('Checking render array cache tags.');
     sort($expected_render_array_cache_tags);
     $this->assertEqual($build['#cache']['tags'], $expected_render_array_cache_tags);
     if ($views_caching_is_enabled) {
         $this->pass('Checking Views results cache item cache tags.');
         /** @var \Drupal\views\Plugin\views\cache\CachePluginBase $cache_plugin */
         $cache_plugin = $view->display_handler->getPlugin('cache');
         // Results cache.
         $results_cache_item = \Drupal::cache('data')->get($cache_plugin->generateResultsKey());
         if (is_array($expected_results_cache)) {
             $this->assertTrue($results_cache_item, 'Results cache item found.');
             if ($results_cache_item) {
                 sort($expected_results_cache);
                 $this->assertEqual($results_cache_item->tags, $expected_results_cache);
             }
         } else {
             $this->assertFalse($results_cache_item, 'Results cache item not found.');
         }
         // Output cache.
         $this->pass('Checking Views output cache item cache tags.');
         $output_cache_item = \Drupal::cache('render')->get($cache_plugin->generateOutputKey());
         if ($views_caching_is_enabled === TRUE) {
             $this->assertTrue($output_cache_item, 'Output cache item found.');
             if ($output_cache_item) {
                 $this->assertEqual($output_cache_item->tags, Cache::mergeTags($expected_render_array_cache_tags, ['rendered']));
             }
         } else {
             $this->assertFalse($output_cache_item, 'Output cache item not found.');
         }
     }
     $view->destroy();
     return $build;
 }

 public function renderPreview($display_id, $args = array())
 {
     // Save the current path so it can be restored before returning from this function.
     $old_q = current_path();
     // Determine where the query and performance statistics should be output.
     $config = \Drupal::config('views.settings');
     $show_query = $config->get('ui.show.sql_query.enabled');
     $show_info = $config->get('ui.show.preview_information');
     $show_location = $config->get('ui.show.sql_query.where');
     $show_stats = $config->get('ui.show.performance_statistics');
     if ($show_stats) {
         $show_stats = $config->get('ui.show.sql_query.where');
     }
     $combined = $show_query && $show_stats;
     $rows = array('query' => array(), 'statistics' => array());
     $output = '';
     $errors = $this->executable->validate();
     $this->executable->destroy();
     if (empty($errors)) {
         $this->ajax = TRUE;
         $this->executable->live_preview = TRUE;
         // AJAX happens via HTTP POST but everything expects exposed data to
         // be in GET. Copy stuff but remove ajax-framework specific keys.
         // If we're clicking on links in a preview, though, we could actually
         // have some input in the query parameters, so we merge request() and
         // query() to ensure we get it all.
         $exposed_input = array_merge(\Drupal::request()->request->all(), \Drupal::request()->query->all());
         foreach (array('view_name', 'view_display_id', 'view_args', 'view_path', 'view_dom_id', 'pager_element', 'view_base_path', 'ajax_html_ids', 'ajax_page_state', 'form_id', 'form_build_id', 'form_token') as $key) {
             if (isset($exposed_input[$key])) {
                 unset($exposed_input[$key]);
             }
         }
         $this->executable->setExposedInput($exposed_input);
         if (!$this->executable->setDisplay($display_id)) {
             return t('Invalid display id @display', array('@display' => $display_id));
         }
         $this->executable->setArguments($args);
         // Store the current view URL for later use:
         if ($this->executable->display_handler->getOption('path')) {
             $path = $this->executable->getUrl();
         }
         // Make view links come back to preview.
         $this->override_path = 'admin/structure/views/view/' . $this->id() . '/preview/' . $display_id;
         // Also override the current path so we get the pager.
         $original_path = current_path();
         $q = _current_path($this->override_path);
         if ($args) {
             $q .= '/' . implode('/', $args);
             _current_path($q);
         }
         // Suppress contextual links of entities within the result set during a
         // Preview.
         // @todo We'll want to add contextual links specific to editing the View, so
         //   the suppression may need to be moved deeper into the Preview pipeline.
         views_ui_contextual_links_suppress_push();
         $show_additional_queries = $config->get('ui.show.additional_queries');
         Timer::start('entity.view.preview_form');
         if ($show_additional_queries) {
             $this->startQueryCapture();
         }
         // Execute/get the view preview.
         $preview = $this->executable->preview($display_id, $args);
         $preview = drupal_render($preview);
         if ($show_additional_queries) {
             $this->endQueryCapture();
         }
         $this->render_time = Timer::stop('entity.view.preview_form');
         views_ui_contextual_links_suppress_pop();
         // Reset variables.
         unset($this->override_path);
         _current_path($original_path);
         // Prepare the query information and statistics to show either above or
         // below the view preview.
         if ($show_info || $show_query || $show_stats) {
             // Get information from the preview for display.
             if (!empty($this->executable->build_info['query'])) {
                 if ($show_query) {
                     $query_string = $this->executable->build_info['query'];
                     // Only the sql default class has a method getArguments.
                     $quoted = array();
                     if ($this->executable->query instanceof Sql) {
                         $quoted = $query_string->getArguments();
                         $connection = Database::getConnection();
                         foreach ($quoted as $key => $val) {
                             if (is_array($val)) {
                                 $quoted[$key] = implode(', ', array_map(array($connection, 'quote'), $val));
                             } else {
                                 $quoted[$key] = $connection->quote($val);
                             }
                         }
                     }
                     $rows['query'][] = array(array('data' => array('#type' => 'inline_template', '#template' => "<strong>{% trans 'Query' %}</strong>")), array('data' => array('#type' => 'inline_template', '#template' => '<pre>{{ query }}</pre>', '#context' => array('query' => strtr($query_string, $quoted)))));
                     if (!empty($this->additionalQueries)) {
                         $queries = '<strong>' . t('These queries were run during view rendering:') . '</strong>';
                         foreach ($this->additionalQueries as $query) {
                             if ($queries) {
                                 $queries .= "\n";
                             }
                             $query_string = strtr($query['query'], $query['args']);
                             $queries .= t('[@time ms] @query', array('@time' => round($query['time'] * 100000, 1) / 100000.0, '@query' => $query_string));
//.........这里部分代码省略.........