public ViewExecutable::render($display_id = NULL)
Renders this view for a certain display.
Note: You should better use just the preview function if you want to render a view.
Parameters
string $display_id: The machine name of the display, which should be rendered.
Return value
array|null A renderable array containing the view output or NULL if the build process failed.
File
- core/modules/views/src/ViewExecutable.php, line 1440
Class
- ViewExecutable
- Represents a view as a whole.
Namespace
Drupal\views
Code
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 | public function render($display_id = NULL) { $this->execute($display_id); // Check to see if the build failed. if (!empty($this->build_info['fail'])) { return; } if (!empty($this->build_info['denied'])) { return; } /** @var \Drupal\views\Plugin\views\exposed_form\ExposedFormPluginInterface $exposed_form */ $exposed_form = $this->display_handler->getPlugin('exposed_form'); $exposed_form->preRender($this->result); $module_handler = \Drupal::moduleHandler(); // @TODO In the longrun, it would be great to execute a view without // the theme system at all. See https://www.drupal.org/node/2322623. $active_theme = \Drupal::theme()->getActiveTheme(); $themes = array_keys($active_theme->getBaseThemes()); $themes[] = $active_theme->getName(); // Check for already-cached output. /** @var \Drupal\views\Plugin\views\cache\CachePluginBase $cache */ if (!empty($this->live_preview)) { $cache = Views::pluginManager('cache')->createInstance('none'); } else { $cache = $this->display_handler->getPlugin('cache'); } // Run preRender for the pager as it might change the result. if (!empty($this->pager)) { $this->pager->preRender($this->result); } // Initialize the style plugin. $this->initStyle(); if (!isset($this->response)) { // Set the response so other parts can alter it. $this->response = new Response('', 200); } // Give field handlers the opportunity to perform additional queries // using the entire resultset prior to rendering. if ($this->style_plugin->usesFields()) { foreach ($this->field as $id => $handler) { if (!empty($this->field[$id])) { $this->field[$id]->preRender($this->result); } } } $this->style_plugin->preRender($this->result); // Let each area handler have access to the result set. $areas = array('header', 'footer'); // Only call preRender() on the empty handlers if the result is empty. if (empty($this->result)) { $areas[] = 'empty'; } foreach ($areas as $area) { foreach ($this->{$area} as $handler) { $handler->preRender($this->result); } } // Let modules modify the view just prior to rendering it. $module_handler->invokeAll('views_pre_render', array($this)); // Let the themes play too, because pre render is a very themey thing. foreach ($themes as $theme_name) { $function = $theme_name . '_views_pre_render'; if (function_exists($function)) { $function($this); } } $this->display_handler->output = $this->display_handler->render(); $exposed_form->postRender($this->display_handler->output); $cache->postRender($this->display_handler->output); // Let modules modify the view output after it is rendered. $module_handler->invokeAll('views_post_render', array($this, &$this->display_handler->output, $cache)); // Let the themes play too, because post render is a very themey thing. foreach ($themes as $theme_name) { $function = $theme_name . '_views_post_render'; if (function_exists($function)) { $function($this, $this->display_handler->output, $cache); } } return $this->display_handler->output;} |
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