function StylePluginBase::renderFields

Renders all of the fields for a given style and store them on the object.

Parameters

array $result: The result array from $view->result

File

core/modules/views/src/Plugin/views/style/StylePluginBase.php, line 657

Class

StylePluginBase

Base class for views style plugins.

Namespace

Code

protected function renderFields(array $result) {
    if (!$this->usesFields()) {
        return;
    }
    if (!isset($this->rendered_fields)) {
        $this->rendered_fields = [];
        $this->view->row_index = 0;
        $field_ids = array_keys($this->view->field);
        // Only tokens relating to field handlers preceding the one we invoke
        // ::getRenderTokens() on are returned, so here we need to pick the last
        // available field handler.
        $render_tokens_field_id = end($field_ids);
        // If all fields have a field::access FALSE there might be no fields, so
        // there is no reason to execute this code.
        if (!empty($field_ids)) {
            $renderer = $this->getRenderer();
            
            /** @var \Drupal\views\Plugin\views\cache\CachePluginBase $cache_plugin */
            $cache_plugin = $this->view->display_handler
                ->getPlugin('cache');
            $max_age = $cache_plugin->getCacheMaxAge();
            
            /** @var \Drupal\views\ResultRow $row */
            foreach ($result as $index => $row) {
                $this->view->row_index = $index;
                // Here we implement render caching for result rows. Since we never
                // build a render array for single rows, given that style templates
                // need individual field markup to support proper theming, we build
                // a raw render array containing all field render arrays and cache it.
                // This allows us to cache the markup of the various children, that is
                // individual fields, which is then available for style template
                // preprocess functions, later in the rendering workflow.
                // @todo Fetch all the available cached row items in one single cache
                //   get operation, once https://www.drupal.org/node/2453945 is fixed.
                $data = [
                    '#pre_render' => [
                        [
                            $this,
                            'elementPreRenderRow',
                        ],
                    ],
                    '#row' => $row,
                    '#cache' => [
                        'keys' => $cache_plugin->getRowCacheKeys($row),
                        'tags' => $cache_plugin->getRowCacheTags($row),
                        'max-age' => $max_age,
                    ],
                    '#cache_properties' => $field_ids,
                ];
                $renderer->addCacheableDependency($data, $this->view->storage);
                // Views may be rendered both inside and outside a render context:
                // - HTML views are rendered inside a render context: then we want to
                //   use ::render(), so that attachments and cacheability are bubbled.
                // - non-HTML views are rendered outside a render context: then we
                //   want to use ::renderPlain(), so that no bubbling happens
                if ($renderer->hasRenderContext()) {
                    $renderer->render($data);
                }
                else {
                    $renderer->renderPlain($data);
                }
                // Extract field output from the render array and post process it.
                $fields = $this->view->field;
                $rendered_fields =& $this->rendered_fields[$index];
                $post_render_tokens = [];
                foreach ($field_ids as $id) {
                    $rendered_fields[$id] = $data[$id]['#markup'];
                    $tokens = $fields[$id]->postRender($row, $rendered_fields[$id]);
                    if ($tokens) {
                        $post_render_tokens += $tokens;
                    }
                }
                // Populate row tokens.
                $this->rowTokens[$index] = $this->view->field[$render_tokens_field_id]
                    ->getRenderTokens([]);
                // Replace post-render tokens.
                if ($post_render_tokens) {
                    $placeholders = array_keys($post_render_tokens);
                    $values = array_values($post_render_tokens);
                    foreach ($this->rendered_fields[$index] as &$rendered_field) {
                        // Placeholders and rendered fields have been processed by the
                        // render system and are therefore safe.
                        $rendered_field = ViewsRenderPipelineMarkup::create(str_replace($placeholders, $values, $rendered_field));
                    }
                }
            }
        }
        unset($this->view->row_index);
    }
}