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WP_Customize_Manager::handle_dismiss_autosave_or_lock_request()

Delete a given auto-draft changeset or the autosave revision for a given changeset or delete changeset lock.

Source

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

public function handle_dismiss_autosave_or_lock_request() {
		// Calls to dismiss_user_auto_draft_changesets() and wp_get_post_autosave() require non-zero get_current_user_id().
		if ( ! is_user_logged_in() ) {
			wp_send_json_error( 'unauthenticated', 401 );
		}

		if ( ! $this->is_preview() ) {
			wp_send_json_error( 'not_preview', 400 );
		}

		if ( ! check_ajax_referer( 'customize_dismiss_autosave_or_lock', 'nonce', false ) ) {
			wp_send_json_error( 'invalid_nonce', 403 );
		}

		$changeset_post_id = $this->changeset_post_id();
		$dismiss_lock      = ! empty( $_POST['dismiss_lock'] );
		$dismiss_autosave  = ! empty( $_POST['dismiss_autosave'] );

		if ( $dismiss_lock ) {
			if ( empty( $changeset_post_id ) && ! $dismiss_autosave ) {
				wp_send_json_error( 'no_changeset_to_dismiss_lock', 404 );
			}
			if ( ! current_user_can( get_post_type_object( 'customize_changeset' )->cap->edit_post, $changeset_post_id ) && ! $dismiss_autosave ) {
				wp_send_json_error( 'cannot_remove_changeset_lock', 403 );
			}

			delete_post_meta( $changeset_post_id, '_edit_lock' );

			if ( ! $dismiss_autosave ) {
				wp_send_json_success( 'changeset_lock_dismissed' );
			}
		}

		if ( $dismiss_autosave ) {
			if ( empty( $changeset_post_id ) || 'auto-draft' === get_post_status( $changeset_post_id ) ) {
				$dismissed = $this->dismiss_user_auto_draft_changesets();
				if ( $dismissed > 0 ) {
					wp_send_json_success( 'auto_draft_dismissed' );
				} else {
					wp_send_json_error( 'no_auto_draft_to_delete', 404 );
				}
			} else {
				$revision = wp_get_post_autosave( $changeset_post_id, get_current_user_id() );

				if ( $revision ) {
					if ( ! current_user_can( get_post_type_object( 'customize_changeset' )->cap->delete_post, $changeset_post_id ) ) {
						wp_send_json_error( 'cannot_delete_autosave_revision', 403 );
					}

					if ( ! wp_delete_post( $revision->ID, true ) ) {
						wp_send_json_error( 'autosave_revision_deletion_failure', 500 );
					} else {
						wp_send_json_success( 'autosave_revision_deleted' );
					}
				} else {
					wp_send_json_error( 'no_autosave_revision_to_delete', 404 );
				}
			}
		}

		wp_send_json_error( 'unknown_error', 500 );
	}

Uses

Uses Description
wp-includes/class-wp-customize-manager.php: WP_Customize_Manager::dismiss_user_auto_draft_changesets()

Dismiss all of the current user’s auto-drafts (other than the present one).
wp-includes/class-wp-customize-manager.php: WP_Customize_Manager::changeset_post_id()

Get the changeset post ID for the loaded changeset.
wp-includes/capabilities.php: current_user_can()

Returns whether the current user has the specified capability.
wp-includes/class-wp-customize-manager.php: WP_Customize_Manager::is_preview()

Is it a theme preview?
wp-includes/pluggable.php: is_user_logged_in()

Determines whether the current visitor is a logged in user.
wp-includes/pluggable.php: check_ajax_referer()

Verifies the Ajax request to prevent processing requests external of the blog.
wp-includes/functions.php: wp_send_json_error()

Send a JSON response back to an Ajax request, indicating failure.
wp-includes/functions.php: wp_send_json_success()

Send a JSON response back to an Ajax request, indicating success.
wp-includes/user.php: get_current_user_id()

Get the current user’s ID
wp-includes/post.php: wp_delete_post()

Trash or delete a post or page.
wp-includes/post.php: delete_post_meta()

Deletes a post meta field for the given post ID.
wp-includes/post.php: get_post_type_object()

Retrieves a post type object by name.
wp-includes/post.php: get_post_status()

Retrieve the post status based on the post ID.
wp-includes/revision.php: wp_get_post_autosave()

Retrieve the autosaved data of the specified post.

Changelog

Version Description
4.9.0 Introduced.

© 2003–2019 WordPress Foundation
Licensed under the GNU GPLv2+ License.
https://developer.wordpress.org/reference/classes/wp_customize_manager/handle_dismiss_autosave_or_lock_request