wp_ajax_delete_meta()

Ajax handler for deleting meta.

Source

File: wp-admin/includes/ajax-actions.php 

function wp_ajax_delete_meta() {
	$id = isset( $_POST['id'] ) ? (int) $_POST['id'] : 0;

	check_ajax_referer( "delete-meta_$id" );
	if ( !$meta = get_metadata_by_mid( 'post', $id ) )
		wp_die( 1 );

	if ( is_protected_meta( $meta->meta_key, 'post' ) || ! current_user_can( 'delete_post_meta',  $meta->post_id, $meta->meta_key ) )
		wp_die( -1 );
	if ( delete_meta( $meta->meta_id ) )
		wp_die( 1 );
	wp_die( 0 );
}

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Related

Uses

Uses
Uses Description
wp-includes/pluggable.php: check_ajax_referer()

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

Whether the current user has a specific capability.
wp-includes/meta.php: is_protected_meta()

Determine whether a meta key is protected.
wp-includes/meta.php: get_metadata_by_mid()

Get meta data by meta ID
wp-includes/functions.php: wp_die()

Kill ClassicPress execution and display HTML message with error message.
wp-admin/includes/post.php: delete_meta()

Delete post meta data by meta ID.
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Changelog

Changelog
Version Description
WP-3.1.0 Introduced.