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Filter the body_class to add classes to site <body> in specific scenarios
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| <?php/** | |
| * Set Header Colour on pages based on first block's colour | |
| * | |
| * @link https://developer.wordpress.org/reference/functions/body_class/ | |
| */ | |
| function client_header_body_classes( $classes ) { | |
| // page header colours | |
| if ( is_page() && !is_page( 'Blog' ) ) { | |
| global $post; | |
| $client_blocks = parse_blocks( $post->post_content ); | |
| if ( !empty( $client_blocks ) ) { | |
| $client_first_block_bg = $client_blocks[0]['attrs']['backgroundColor'] ?? null; | |
| if ( ( isset( $client_first_block_bg ) && ! empty( $client_first_block_bg ) ) ) { | |
| $classes[] = esc_attr( 'client-site-header-' . $client_first_block_bg ); | |
| } | |
| } | |
| // body class for both event post types | |
| } elseif ( is_singular( array( 'client_weddings', 'client_corporate_event', 'post') ) ) { | |
| $classes[] = 'single-cwce-post'; | |
| } | |
| return $classes; | |
| } // client_header_body_classes | |
| add_filter( 'body_class', 'client_header_body_classes' ); |
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Update class according to the first block used on the page. Useful for changing header colour.