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wp_ajax_get_post_thumbnail_html()

Ajax handler for retrieving HTML for the featured image.

Source

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

function wp_ajax_get_post_thumbnail_html() {
	$post_ID = intval( $_POST['post_id'] );

	check_ajax_referer( "update-post_$post_ID" );

	if ( ! current_user_can( 'edit_post', $post_ID ) ) {
		wp_die( -1 );
	}

	$thumbnail_id = intval( $_POST['thumbnail_id'] );

	// For backward compatibility, -1 refers to no featured image.
	if ( -1 === $thumbnail_id ) {
		$thumbnail_id = null;
	}

	$return = _wp_post_thumbnail_html( $thumbnail_id, $post_ID );
	wp_send_json_success( $return );
}

Uses

Uses Description
wp-admin/includes/post.php: _wp_post_thumbnail_html()

Returns HTML for the post thumbnail meta box.
wp-includes/capabilities.php: current_user_can()

Returns whether the current user has the specified capability.
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_success()

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

Kills WordPress execution and displays HTML page with an error message.

Changelog

Version Description
4.6.0 Introduced.

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