Paramètre

$class

() (Optionnel) Une chaîne de noms de classe séparés par des espaces ou un tableau à ajouter à la liste de classes.

Valeur par défaut : ''

Retourne

Un tableau de noms de classe

Structure de la fonction get_body_class()

Définie dans le fichier wp-includes/post-template.php

function get_body_class( $class = '' ) {
    global $wp_query;
 
    $classes = array();
 
    if ( is_rtl() ) {
        $classes[] = 'rtl';
    }
 
    if ( is_front_page() ) {
        $classes[] = 'home';
    }
    if ( is_home() ) {
        $classes[] = 'blog';
    }
    if ( is_privacy_policy() ) {
        $classes[] = 'privacy-policy';
    }
    if ( is_archive() ) {
        $classes[] = 'archive';
    }
    if ( is_date() ) {
        $classes[] = 'date';
    }
    if ( is_search() ) {
        $classes[] = 'search';
        $classes[] = $wp_query->posts ? 'search-results' : 'search-no-results';
    }
    if ( is_paged() ) {
        $classes[] = 'paged';
    }
    if ( is_attachment() ) {
        $classes[] = 'attachment';
    }
    if ( is_404() ) {
        $classes[] = 'error404';
    }
 
    if ( is_singular() ) {
        $post_id   = $wp_query->get_queried_object_id();
        $post      = $wp_query->get_queried_object();
        $post_type = $post->post_type;
 
        if ( is_page_template() ) {
            $classes[] = "{$post_type}-template";
 
            $template_slug  = get_page_template_slug( $post_id );
            $template_parts = explode( '/', $template_slug );
 
            foreach ( $template_parts as $part ) {
                $classes[] = "{$post_type}-template-" . sanitize_html_class( str_replace( array( '.', '/' ), '-', basename( $part, '.php' ) ) );
            }
            $classes[] = "{$post_type}-template-" . sanitize_html_class( str_replace( '.', '-', $template_slug ) );
        } else {
            $classes[] = "{$post_type}-template-default";
        }
 
        if ( is_single() ) {
            $classes[] = 'single';
            if ( isset( $post->post_type ) ) {
                $classes[] = 'single-' . sanitize_html_class( $post->post_type, $post_id );
                $classes[] = 'postid-' . $post_id;
 
                // Post Format
                if ( post_type_supports( $post->post_type, 'post-formats' ) ) {
                    $post_format = get_post_format( $post->ID );
 
                    if ( $post_format && ! is_wp_error( $post_format ) ) {
                        $classes[] = 'single-format-' . sanitize_html_class( $post_format );
                    } else {
                        $classes[] = 'single-format-standard';
                    }
                }
            }
        }
 
        if ( is_attachment() ) {
            $mime_type   = get_post_mime_type( $post_id );
            $mime_prefix = array( 'application/', 'image/', 'text/', 'audio/', 'video/', 'music/' );
            $classes[]   = 'attachmentid-' . $post_id;
            $classes[]   = 'attachment-' . str_replace( $mime_prefix, '', $mime_type );
        } elseif ( is_page() ) {
            $classes[] = 'page';
 
            $page_id = $wp_query->get_queried_object_id();
 
            $post = get_post( $page_id );
 
            $classes[] = 'page-id-' . $page_id;
 
            if ( get_pages(
                array(
                    'parent' => $page_id,
                    'number' => 1,
                )
            ) ) {
                $classes[] = 'page-parent';
            }
 
            if ( $post->post_parent ) {
                $classes[] = 'page-child';
                $classes[] = 'parent-pageid-' . $post->post_parent;
            }
        }
    } elseif ( is_archive() ) {
        if ( is_post_type_archive() ) {
            $classes[] = 'post-type-archive';
            $post_type = get_query_var( 'post_type' );
            if ( is_array( $post_type ) ) {
                $post_type = reset( $post_type );
            }
            $classes[] = 'post-type-archive-' . sanitize_html_class( $post_type );
        } elseif ( is_author() ) {
            $author    = $wp_query->get_queried_object();
            $classes[] = 'author';
            if ( isset( $author->user_nicename ) ) {
                $classes[] = 'author-' . sanitize_html_class( $author->user_nicename, $author->ID );
                $classes[] = 'author-' . $author->ID;
            }
        } elseif ( is_category() ) {
            $cat       = $wp_query->get_queried_object();
            $classes[] = 'category';
            if ( isset( $cat->term_id ) ) {
                $cat_class = sanitize_html_class( $cat->slug, $cat->term_id );
                if ( is_numeric( $cat_class ) || ! trim( $cat_class, '-' ) ) {
                    $cat_class = $cat->term_id;
                }
 
                $classes[] = 'category-' . $cat_class;
                $classes[] = 'category-' . $cat->term_id;
            }
        } elseif ( is_tag() ) {
            $tag       = $wp_query->get_queried_object();
            $classes[] = 'tag';
            if ( isset( $tag->term_id ) ) {
                $tag_class = sanitize_html_class( $tag->slug, $tag->term_id );
                if ( is_numeric( $tag_class ) || ! trim( $tag_class, '-' ) ) {
                    $tag_class = $tag->term_id;
                }
 
                $classes[] = 'tag-' . $tag_class;
                $classes[] = 'tag-' . $tag->term_id;
            }
        } elseif ( is_tax() ) {
            $term = $wp_query->get_queried_object();
            if ( isset( $term->term_id ) ) {
                $term_class = sanitize_html_class( $term->slug, $term->term_id );
                if ( is_numeric( $term_class ) || ! trim( $term_class, '-' ) ) {
                    $term_class = $term->term_id;
                }
 
                $classes[] = 'tax-' . sanitize_html_class( $term->taxonomy );
                $classes[] = 'term-' . $term_class;
                $classes[] = 'term-' . $term->term_id;
            }
        }
    }
 
    if ( is_user_logged_in() ) {
        $classes[] = 'logged-in';
    }
 
    if ( is_admin_bar_showing() ) {
        $classes[] = 'admin-bar';
        $classes[] = 'no-customize-support';
    }
 
    if ( current_theme_supports( 'custom-background' )
        && ( get_background_color() !== get_theme_support( 'custom-background', 'default-color' ) || get_background_image() ) ) {
        $classes[] = 'custom-background';
    }
 
    if ( has_custom_logo() ) {
        $classes[] = 'wp-custom-logo';
    }
 
    if ( current_theme_supports( 'responsive-embeds' ) ) {
        $classes[] = 'wp-embed-responsive';
    }
 
    $page = $wp_query->get( 'page' );
 
    if ( ! $page || $page < 2 ) {
        $page = $wp_query->get( 'paged' );
    }
 
    if ( $page && $page > 1 && ! is_404() ) {
        $classes[] = 'paged-' . $page;
 
        if ( is_single() ) {
            $classes[] = 'single-paged-' . $page;
        } elseif ( is_page() ) {
            $classes[] = 'page-paged-' . $page;
        } elseif ( is_category() ) {
            $classes[] = 'category-paged-' . $page;
        } elseif ( is_tag() ) {
            $classes[] = 'tag-paged-' . $page;
        } elseif ( is_date() ) {
            $classes[] = 'date-paged-' . $page;
        } elseif ( is_author() ) {
            $classes[] = 'author-paged-' . $page;
        } elseif ( is_search() ) {
            $classes[] = 'search-paged-' . $page;
        } elseif ( is_post_type_archive() ) {
            $classes[] = 'post-type-paged-' . $page;
        }
    }
 
    if ( ! empty( $class ) ) {
        if ( ! is_array( $class ) ) {
            $class = preg_split( '#s+#', $class );
        }
        $classes = array_merge( $classes, $class );
    } else {
        // Ensure that we always coerce class to being an array.
        $class = array();
    }
 
    $classes = array_map( 'esc_attr', $classes );
 
    /**
     * Filters the list of CSS body class names for the current post or page.
     *
     * @since 2.8.0
     *
     * @param string[] $classes An array of body class names.
     * @param string[] $class   An array of additional class names added to the body.
     */
    $classes = apply_filters( 'body_class', $classes, $class );
 
    return array_unique( $classes );
}

Où trouver la fonction get_body_class() dans le CMS Wordpress

wp-includes/post-template.php

Ligne 585

function body_class( $class = '' ) {
    // Separates class names with a single space, collates class names for body element
    echo 'class="' . join( ' ', get_body_class( $class ) ) . '"';
}

Sources

Source Wordpress : get_body_class()

Autres fonctions dans le même fichier : wp-includes/post-template.php