wp_ajax_add_meta()

1635function wp_ajax_add_meta() {1636	check_ajax_referer( 'add-meta', '_ajax_nonce-add-meta' );1637	$count   = 0;1638	$post_id = (int) $_POST['post_id'];1639	$post    = get_post( $post_id );1640 1641	if ( isset( $_POST['metakeyselect'] ) || isset( $_POST['metakeyinput'] ) ) {1642		if ( ! $post || ! current_user_can( 'edit_post', $post_id ) ) {1643			wp_die( -1 );1644		}1645 1646		if ( isset( $_POST['metakeyselect'] ) && '#NONE#' === $_POST['metakeyselect'] && empty( $_POST['metakeyinput'] ) ) {1647			wp_die( 1 );1648		}1649 1650		// If the post is an autodraft, save the post as a draft and then attempt to save the meta.1651		if ( 'auto-draft' === $post->post_status ) {1652			$post_data                = array();1653			$post_data['action']      = 'draft'; // Warning fix.1654			$post_data['post_ID']     = $post_id;1655			$post_data['post_type']   = $post->post_type;1656			$post_data['post_status'] = 'draft';1657			$now                      = time();1658 1659			$post_data['post_title'] = sprintf(1660				/* translators: 1: Post creation date, 2: Post creation time. */1661				__( 'Draft created on %1$s at %2$s' ),1662				gmdate( __( 'F j, Y' ), $now ),1663				gmdate( __( 'g:i a' ), $now )1664			);1665 1666			$post_id = edit_post( $post_data );1667 1668			if ( $post_id ) {1669				if ( is_wp_error( $post_id ) ) {1670					$response = new WP_Ajax_Response(1671						array(1672							'what' => 'meta',1673							'data' => $post_id,1674						)1675					);1676					$response->send();1677				}1678 1679				$meta_id = add_meta( $post_id );1680 1681				if ( ! $meta_id ) {1682					wp_die( __( 'Please provide a custom field value.' ) );1683				}1684			} else {1685				wp_die( 0 );1686			}1687		} else {1688			$meta_id = add_meta( $post_id );1689 1690			if ( ! $meta_id ) {1691				wp_die( __( 'Please provide a custom field value.' ) );1692			}1693		}1694 1695		$meta    = get_metadata_by_mid( 'post', $meta_id );1696		$post_id = (int) $meta->post_id;1697		$meta    = get_object_vars( $meta );1698 1699		$response = new WP_Ajax_Response(1700			array(1701				'what'         => 'meta',1702				'id'           => $meta_id,1703				'data'         => _list_meta_row( $meta, $count ),1704				'position'     => 1,1705				'supplemental' => array( 'postid' => $post_id ),1706			)1707		);1708	} else { // Update?1709		$meta_id = (int) key( $_POST['meta'] );1710		$key     = wp_unslash( $_POST['meta'][ $meta_id ]['key'] );1711		$value   = wp_unslash( $_POST['meta'][ $meta_id ]['value'] );1712 1713		if ( '' === trim( $key ) ) {1714			wp_die( __( 'Please provide a custom field name.' ) );