Ticket #30448: 30448-customizer-patch.diff

wp-includes/class-wp-customize-setting.php

@@ -171 +171 @@
          * @return false|null False if cap check fails or value isn't set.
          */
         public final function save() {
-                $value = $this->post_value();
+
+                /**
+                 * Filter a Customize setting value before the setting is saved.
+                 *
+                 * @since 4.2.0
+                 *
+                 * @param mixed                $value Value of the setting.
+                 * @param WP_Customize_Setting $this  WP_Customize_Setting instance.
+                 */
+                $value = apply_filters( 'customize_save_value', $this->post_value(), $this );
 
                 if ( ! $this->check_capabilities() || ! isset( $value ) )
                         return false;