function RestExport::render

Overrides DisplayPluginBase::render

File

core/modules/rest/src/Plugin/views/display/RestExport.php, line 447

Class

RestExport

The plugin that handles Data response callbacks for REST resources.

Namespace

Code

public function render() {
    $build = [];
    $build['#markup'] = $this->renderer
        ->executeInRenderContext(new RenderContext(), function () {
        return $this->view->style_plugin
            ->render();
    });
    $this->view->element['#content_type'] = $this->getMimeType();
    $this->view->element['#cache_properties'][] = '#content_type';
    // Encode and wrap the output in a pre tag if this is for a live preview.
    if (!empty($this->view->live_preview)) {
        $build['#prefix'] = '<pre>';
        $build['#plain_text'] = $build['#markup'];
        $build['#suffix'] = '</pre>';
        unset($build['#markup']);
    }
    else {
        // This display plugin is for returning non-HTML formats. However, we
        // still invoke the renderer to collect cacheability metadata. Because the
        // renderer is designed for HTML rendering, it filters #markup for XSS
        // unless it is already known to be safe, but that filter only works for
        // HTML. Therefore, we mark the contents as safe to bypass the filter. So
        // long as we are returning this in a non-HTML response,
        // this is safe, because an XSS attack only works when executed by an HTML
        // agent.
        // @todo Decide how to support non-HTML in the render API in
        //   https://www.drupal.org/node/2501313.
        $build['#markup'] = ViewsRenderPipelineMarkup::create($build['#markup']);
    }
    parent::applyDisplayCacheabilityMetadata($build);
    return $build;
}