WP_Customize_Manager::establish_loaded_changeset()

Establish the loaded changeset.


Description Description

This method runs right at after_setup_theme and applies the ‘customize_changeset_branching’ filter to determine whether concurrent changesets are allowed. Then if the Customizer is not initialized with a changeset_uuid param, this method will determine which UUID should be used. If changeset branching is disabled, then the most saved changeset will be loaded by default. Otherwise, if there are no existing saved changesets or if changeset branching is enabled, then a new UUID will be generated.



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Source Source

File: wp-includes/class-wp-customize-manager.php

	public function establish_loaded_changeset() {
		global $pagenow;

		if ( empty( $this->_changeset_uuid ) ) {
			$changeset_uuid = null;

			if ( ! $this->branching() && $this->is_theme_active() ) {
				$unpublished_changeset_posts = $this->get_changeset_posts(
					array(
						'post_status'               => array_diff( get_post_stati(), array( 'auto-draft', 'publish', 'trash', 'inherit', 'private' ) ),
						'exclude_restore_dismissed' => false,
						'author'                    => 'any',
						'posts_per_page'            => 1,
						'order'                     => 'DESC',
						'orderby'                   => 'date',
					)
				);
				$unpublished_changeset_post  = array_shift( $unpublished_changeset_posts );
				if ( ! empty( $unpublished_changeset_post ) && wp_is_uuid( $unpublished_changeset_post->post_name ) ) {
					$changeset_uuid = $unpublished_changeset_post->post_name;
				}
			}

			// If no changeset UUID has been set yet, then generate a new one.
			if ( empty( $changeset_uuid ) ) {
				$changeset_uuid = wp_generate_uuid4();
			}

			$this->_changeset_uuid = $changeset_uuid;
		}

		if ( is_admin() && 'customize.php' === $pagenow ) {
			$this->set_changeset_lock( $this->changeset_post_id() );
		}
	}

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Changelog
Version Description
4.9.0 Introduced.

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