Changeset 51193 for trunk/src/wp-includes/theme.php

Timestamp:

06/22/2021 02:58:07 AM (4 years ago)

Author:

desrosj

Message:

Themes: Prevent a Full Site Editing theme from being activated when Gutenberg is not active.

When a theme that uses the Full Site Editing feature is activated and the Gutenberg plugin is not present, the site will currently show a text notice on the front end. The user is not made aware of this unless they visit the front end of their site.

This adds a check that will prevent a theme from being activated when the full-site-editing tag is present in the theme’s style.css header and the Gutenberg plugin is not active to prevent this scenario.

These checks can be removed once Full Site Editing is completely merged into Core.

Props desrosj, marybaum, chanthaboune.
See #53410.

File:

• trunk/src/wp-includes/theme.php (modified) (1 diff)

trunk/src/wp-includes/theme.php

@@ -908 +908 @@
 function validate_theme_requirements( $stylesheet ) {
     $theme = wp_get_theme( $stylesheet );
+
+    // If the theme is a Full Site Editing theme, check for the presence of the Gutenberg plugin.
+    $theme_tags = $theme->get( 'Tags' );
+
+    if ( ! empty( $theme_tags ) && in_array( 'full-site-editing', $theme_tags, true ) && ! is_plugin_active( 'gutenberg/gutenberg.php' ) ) {
+        return new WP_Error(
+            'theme_requires_fse',
+            sprintf(
+                    /* translators: %s: Theme name. */
+                _x( '<strong>Error:</strong> This theme (%s) uses Full Site Editing, which requires the Gutenberg plugin to be activated.', 'theme' ),
+                $theme->display( 'Name' )
+            )
+        );
+    }
 
     $requirements = array(