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Custom_Image_Header::ajax_header_add()

Custom_Image_Header::ajax_header_add()

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Given an attachment ID for a header image, updates its “last used” timestamp to now.

Description

Triggered when the user tries adds a new header image from the Media Manager, even if s/he doesn’t save that change.

Source

public function ajax_header_add() {	check_ajax_referer( 'header-add', 'nonce' );	if ( ! current_user_can( 'edit_theme_options' ) ) {	wp_send_json_error();	}	$attachment_id = absint( $_POST['attachment_id'] );	if ( $attachment_id < 1 ) {	wp_send_json_error();	}	$key = '_wp_attachment_custom_header_last_used_' . get_stylesheet();	update_post_meta( $attachment_id, $key, time() );	update_post_meta( $attachment_id, '_wp_attachment_is_custom_header', get_stylesheet() );	wp_send_json_success(); }

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UsesDescription
get_stylesheet()wp-includes/theme.php

Retrieves name of the current stylesheet.

update_post_meta()wp-includes/post.php

Updates a post meta field based on the given post ID.

current_user_can()wp-includes/capabilities.php

Returns whether the current user has the specified capability.

check_ajax_referer()wp-includes/pluggable.php

Verifies the Ajax request to prevent processing requests external of the blog.

wp_send_json_error()wp-includes/functions.php

Sends a JSON response back to an Ajax request, indicating failure.

absint()wp-includes/load.php

Converts a value to non-negative integer.

wp_send_json_success()wp-includes/functions.php

Sends a JSON response back to an Ajax request, indicating success.

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Changelog

VersionDescription
3.9.0Introduced.

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