AjaxBasePageNegotiator

Defines a theme negotiator that deals with the active theme on ajax requests.

Many different pages can invoke an Ajax request to a generic Ajax path. It is almost always desired for an Ajax response to be rendered using the same theme as the base page, because most themes are built with the assumption that they control the entire page, so if the CSS for two themes are both loaded for a given page, they may conflict with each other. For example, Bartik is Drupal's default theme, and Seven is Drupal's default administration theme. Depending on whether the "Use the administration theme when editing or creating content" checkbox is checked, the node edit form may be displayed in either theme, but the Ajax response to the Field module's "Add another item" button should be rendered using the same theme as the rest of the page.

Hierarchy

• class \Drupal\Core\Theme\AjaxBasePageNegotiator implements ThemeNegotiatorInterface

File

core/lib/Drupal/Core/Theme/AjaxBasePageNegotiator.php, line 25

Namespace

Drupal\Core\Theme

Members