📄 Viewing: class-custom-body-class.php
<?php
namespace ASENHA\Classes;
/**
* Class for Custom Body Class module
*
* @since 6.9.5
*/
class Custom_Body_Class {
/**
* Add Custom Body Class meta box for enabled post types
*
* @since 3.9.0
*/
public function add_custom_body_class_meta_box( $post_type, $post ) {
$options = get_option( ASENHA_SLUG_U, array() );
$enable_custom_body_class_for = $options['enable_custom_body_class_for'];
foreach ( $enable_custom_body_class_for as $post_type_slug => $is_custom_body_class_enabled ) {
if ( ( get_post_type() == $post_type_slug ) && $is_custom_body_class_enabled ) {
// Skip adding meta box for post types where Gutenberg is enabled
// if (
// function_exists( 'use_block_editor_for_post_type' )
// && use_block_editor_for_post_type( $post_type_slug )
// ) {
// continue; // go to the beginning of next iteration
// }
add_meta_box(
'asenha-custom-body-class', // ID of meta box
'Custom <body> Class', // Title of meta box
[ $this, 'output_custom_body_class_meta_box' ], // Callback function
$post_type_slug, // The screen on which the meta box should be output to
'normal', // context
'high' // priority
// array(), // $args to pass to callback function. Ref: https://developer.wordpress.org/reference/functions/add_meta_box/#comment-342
);
}
}
}
/**
* Render External Permalink meta box
*
* @since 3.9.0
*/
public function output_custom_body_class_meta_box( $post ) {
?>
<div class="custom-body-class-input">
<input name="<?php echo esc_attr( 'custom_body_class' ); ?>" class="large-text" id="<?php echo esc_attr( 'custom_body_class' ); ?>" type="text" value="<?php echo esc_attr( get_post_meta( $post->ID, '_custom_body_class', true ) ); ?>" placeholder="e.g. light-theme new-year-promo" />
<div class="custom-body-class-input-description">Use blank space to separate multiple classes, e.g. first-class second-class</div>
<?php wp_nonce_field( 'custom_body_class_' . $post->ID, 'custom_body_class_nonce', false, true ); ?>
</div>
<?php
}
/**
* Save custom body class input
*
* @since 3.9.0
*/
public function save_custom_body_class( $post_id ) {
// Only proceed if nonce is verified
if ( isset( $_POST['custom_body_class_nonce'] ) && wp_verify_nonce( $_POST['custom_body_class_nonce'], 'custom_body_class_' . $post_id ) ) {
// Get the value of external permalink from input field
$custom_body_class = isset( $_POST['custom_body_class'] ) ? sanitize_text_field( trim( $_POST['custom_body_class'] ) ) : '';
// Update or delete external permalink post meta
if ( ! empty( $custom_body_class ) ) {
update_post_meta( $post_id, '_custom_body_class', $custom_body_class );
} else {
delete_post_meta( $post_id, '_custom_body_class' );
}
}
}
/**
* Append custom body classes to the frontend <body> tag
*
* @since 4.4.0
*/
public function append_custom_body_class( $classes ) {
// Only add custom body classes to the singular view of enabled post types
if ( is_singular() ) {
global $post;
$custom_body_classes = get_post_meta( $post->ID, '_custom_body_class', true );
if ( ! empty( $custom_body_classes ) ) {
$custom_body_classes = explode( ' ', $custom_body_classes );
foreach( $custom_body_classes as $custom_body_class ) {
$classes[] = sanitize_html_class( $custom_body_class );
}
}
}
return $classes;
}
}
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