Same name in other branches

1. 9 core/lib/Drupal/Core/Ajax/AjaxResponseAttachmentsProcessor.php \Drupal\Core\Ajax\AjaxResponseAttachmentsProcessor::buildAttachmentsCommands()
2. 10 core/lib/Drupal/Core/Ajax/AjaxResponseAttachmentsProcessor.php \Drupal\Core\Ajax\AjaxResponseAttachmentsProcessor::buildAttachmentsCommands()
3. 11.x core/lib/Drupal/Core/Ajax/AjaxResponseAttachmentsProcessor.php \Drupal\Core\Ajax\AjaxResponseAttachmentsProcessor::buildAttachmentsCommands()

Prepares the AJAX commands to attach assets.

Parameters

\Drupal\Core\Ajax\AjaxResponse $response: The AJAX response to update.

\Symfony\Component\HttpFoundation\Request $request: The request object that the AJAX is responding to.

Return value

array An array of commands ready to be returned as JSON.

1 call to AjaxResponseAttachmentsProcessor::buildAttachmentsCommands()

AjaxResponseAttachmentsProcessor::processAttachments in core/lib/Drupal/Core/Ajax/AjaxResponseAttachmentsProcessor.php

Processes the attachments of a response that has attachments.

File

core/lib/Drupal/Core/Ajax/AjaxResponseAttachmentsProcessor.php, line 130

Class

AjaxResponseAttachmentsProcessor

Processes attachments of AJAX responses.

Namespace

Drupal\Core\Ajax

Code

protected function buildAttachmentsCommands(AjaxResponse $response, Request $request) {
    $ajax_page_state = $request->request
        ->get('ajax_page_state');
    // Aggregate CSS/JS if necessary, but only during normal site operation.
    $optimize_css = !defined('MAINTENANCE_MODE') && $this->config
        ->get('css.preprocess');
    $optimize_js = !defined('MAINTENANCE_MODE') && $this->config
        ->get('js.preprocess');
    $attachments = $response->getAttachments();
    // Resolve the attached libraries into asset collections.
    $assets = new AttachedAssets();
    $assets->setLibraries(isset($attachments['library']) ? $attachments['library'] : [])
        ->setAlreadyLoadedLibraries(isset($ajax_page_state['libraries']) ? explode(',', $ajax_page_state['libraries']) : [])
        ->setSettings(isset($attachments['drupalSettings']) ? $attachments['drupalSettings'] : []);
    $css_assets = $this->assetResolver
        ->getCssAssets($assets, $optimize_css);
    list($js_assets_header, $js_assets_footer) = $this->assetResolver
        ->getJsAssets($assets, $optimize_js);
    // First, AttachedAssets::setLibraries() ensures duplicate libraries are
    // removed: it converts it to a set of libraries if necessary. Second,
    // AssetResolver::getJsSettings() ensures $assets contains the final set of
    // JavaScript settings. AttachmentsResponseProcessorInterface also mandates
    // that the response it processes contains the final attachment values, so
    // update both the 'library' and 'drupalSettings' attachments accordingly.
    $attachments['library'] = $assets->getLibraries();
    $attachments['drupalSettings'] = $assets->getSettings();
    $response->setAttachments($attachments);
    // Render the HTML to load these files, and add AJAX commands to insert this
    // HTML in the page. Settings are handled separately, afterwards.
    $settings = [];
    if (isset($js_assets_header['drupalSettings'])) {
        $settings = $js_assets_header['drupalSettings']['data'];
        unset($js_assets_header['drupalSettings']);
    }
    if (isset($js_assets_footer['drupalSettings'])) {
        $settings = $js_assets_footer['drupalSettings']['data'];
        unset($js_assets_footer['drupalSettings']);
    }
    // Prepend commands to add the assets, preserving their relative order.
    $resource_commands = [];
    if ($css_assets) {
        $css_render_array = $this->cssCollectionRenderer
            ->render($css_assets);
        $resource_commands[] = new AddCssCommand($this->renderer
            ->renderPlain($css_render_array));
    }
    if ($js_assets_header) {
        $js_header_render_array = $this->jsCollectionRenderer
            ->render($js_assets_header);
        $resource_commands[] = new PrependCommand('head', $this->renderer
            ->renderPlain($js_header_render_array));
    }
    if ($js_assets_footer) {
        $js_footer_render_array = $this->jsCollectionRenderer
            ->render($js_assets_footer);
        $resource_commands[] = new AppendCommand('body', $this->renderer
            ->renderPlain($js_footer_render_array));
    }
    foreach (array_reverse($resource_commands) as $resource_command) {
        $response->addCommand($resource_command, TRUE);
    }
    // Prepend a command to merge changes and additions to drupalSettings.
    if (!empty($settings)) {
        // During Ajax requests basic path-specific settings are excluded from
        // new drupalSettings values. The original page where this request comes
        // from already has the right values. An Ajax request would update them
        // with values for the Ajax request and incorrectly override the page's
        // values.
        // @see system_js_settings_alter()
        unset($settings['path']);
        $response->addCommand(new SettingsCommand($settings, TRUE), TRUE);
    }
    $commands = $response->getCommands();
    $this->moduleHandler
        ->alter('ajax_render', $commands);
    return $commands;
}

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