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Ajouter conditionnellement apt. Ouvrez les méta-données Graph sur différentes pages du site WordPress

Le plugin officiel de Facebook fait un excellent travail en ajoutant des balises méta appropriées Open Graph à différentes pages (Accueil, Articles, Pages, Archives, etc.). .) d'un site WordPress.

Le problème est qu'il fait beaucoup de choses sans ma permission. Existe-t-il un moyen d'obtenir les fonctions responsables de l'ajout des métadonnées Open Graph à partir du plug-in, afin que je puisse les ajouter au functions.php de mon thème?

pluginsfunctionsfacebookopen-graph
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its_me

Le fb-open-graph.php (le fichier de la dernière version) à l'intérieur du dossier extrait du plugin est (uniquement) responsable. pour ajouter des métadonnées Open Graph à l’en-tête de votre site.

Ci-dessous, voici comment j'ai modifié le code dans le fichier afin qu'il soit apte à être ajouté au fichier functions.php de votre thème:

/* Facebook Open Graph Markup In Header
 * from /facebook/fb-open-graph.php file */

function fb_output_og_protocol( $property, $content ) {
    if ( empty( $property ) || empty( $content ) )
        return;

    // array of property values or structured property
    if ( is_array( $content ) ) {
        foreach( $content as $structured_property => $content_value ) {
            // handle numeric keys from regular arrays
            // account for the special structured property of url which is equivalent to the root tag and sets up the structure
            if ( ! is_string( $structured_property ) || $structured_property === 'url' )
                fb_output_og_protocol( $property, $content_value );
            else
                fb_output_og_protocol( $property . ':' . $structured_property, $content_value );
        }
    }
    else {
        echo "<meta property=\"$property\" content=\"" . esc_attr( $content ) . "\" />\n";
    }
}

/* Add Open Graph protocol markup to <head> */

function fb_add_og_protocol() {
    global $post;

    $meta_tags = array(
        'http://ogp.me/ns#locale' => get_locale(),
        'http://ogp.me/ns#site_name' => get_bloginfo( 'name' ),
        'http://ogp.me/ns#type' => 'website'
    );

    if ( is_home() || is_front_page() ) {
        $meta_tags['http://ogp.me/ns#title'] = get_bloginfo( 'name' );
        $meta_tags['http://ogp.me/ns#description'] = get_bloginfo( 'description' );
    } else if ( is_single() ) {
        $post_type = get_post_type();
        $meta_tags['http://ogp.me/ns#type'] = 'article';
        $meta_tags['http://ogp.me/ns#url'] = apply_filters( 'rel_canonical', get_permalink() );
        if ( post_type_supports( $post_type, 'title' ) )
            $meta_tags['http://ogp.me/ns#title'] = get_the_title();
        if ( post_type_supports( $post_type, 'excerpt' ) ) {
            // thanks to Angelo Mandato (http://wordpress.org/support/topic/plugin-facebook-plugin-conflicts-with-powerpress?replies=16)
            // Strip and format the wordpress way, but don't apply any other filters which adds junk that ends up getitng stripped back out
            if ( !post_password_required($post) ) {
                // First lets get the post excerpt (shouldn't have any html, but anyone can enter anything...)
                $desc_no_html = $post->post_excerpt;
                if ( !empty($excerpt_no_html) ) {
                    $desc_no_html = strip_shortcodes($desc_no_html); // Strip shortcodes first in case there is HTML inside the shortcode
                    $desc_no_html = wp_strip_all_tags($desc_no_html); // Strip all html
                    $desc_no_html = trim($desc_no_html); // Trim the final string, we may have stripped everything out of the post so this will make the value empty if that's the case
                }

                // Recheck if empty, may be that the strip functions above made excerpt empty, doubhtful but we want to be 100% sure.
                if( empty($desc_no_html) ) {
                    $desc_no_html = $post->post_content; // Start over, this time with the post_content
                    $desc_no_html = strip_shortcodes( $desc_no_html ); // Strip shortcodes first in case there is HTML inside the shortcode
                    $desc_no_html = str_replace(']]>', ']]&gt;', $desc_no_html); // Angelo Recommendation, if for some reason ]]> happens to be in the_content, rare but We've seen it happen
                    $desc_no_html = wp_strip_all_tags($desc_no_html);
                    $excerpt_length = apply_filters('excerpt_length', 55);
                    $desc_no_html = wp_trim_words( $desc_no_html, $excerpt_length );
                    $desc_no_html = trim($desc_no_html); // Trim the final string, we may have stripped everything out of the post so this will make the value empty if that's the case
                }

                $desc_no_html = str_replace( array( "\r\n", "\r", "\n" ), ' ',$desc_no_html); // I take it Facebook doesn't like new lines?
                $meta_tags['http://ogp.me/ns#description'] = $desc_no_html;
            }
        }

        $meta_tags['http://ogp.me/ns/article#published_time'] = get_the_date('c');
        $meta_tags['http://ogp.me/ns/article#modified_time'] = get_the_modified_date('c');

        if ( post_type_supports( $post_type, 'author' ) && isset( $post->post_author ) )
            $meta_tags['http://ogp.me/ns/article#author'] = get_author_posts_url( $post->post_author );

        // add the first category as a section. all other categories as tags
        $cat_ids = get_the_category();

        if ( ! empty( $cat_ids ) ) {
            $cat = get_category( $cat_ids[0] );

            if ( ! empty( $cat ) )
                $meta_tags['http://ogp.me/ns/article#section'] = $cat->name;

            //output the rest of the categories as tags
            unset( $cat_ids[0] );

            if ( ! empty( $cat_ids ) ) {
                $meta_tags['http://ogp.me/ns/article#tag'] = array();
                foreach( $cat_ids as $cat_id ) {
                    $cat = get_category( $cat_id );
                    $meta_tags['http://ogp.me/ns/article#tag'][] = $cat->name;
                    unset( $cat );
                }
            }
        }

        // add tags. treat tags as lower priority than multiple categories
        $tags = get_the_tags();

        if ( $tags ) {
            if ( ! array_key_exists( 'http://ogp.me/ns/article#tag', $meta_tags ) )
                $meta_tags['http://ogp.me/ns/article#tag'] = array();

            foreach ( $tags as $tag ) {
                $meta_tags['http://ogp.me/ns/article#tag'][] = $tag->name;
            }
        }

        // does current post type and the current theme support post thumbnails?
        if ( post_type_supports( $post_type, 'thumbnail' ) && function_exists( 'has_post_thumbnail' ) && has_post_thumbnail() ) {
            list( $post_thumbnail_url, $post_thumbnail_width, $post_thumbnail_height ) = wp_get_attachment_image_src( get_post_thumbnail_id( $post->ID ), 'full' );

            if ( ! empty( $post_thumbnail_url ) ) {
                $image = array( 'url' => $post_thumbnail_url );

                if ( ! empty( $post_thumbnail_width ) )
                    $image['width'] = absint( $post_thumbnail_width );

                if ( ! empty($post_thumbnail_height) )
                    $image['height'] = absint( $post_thumbnail_height );

                $meta_tags['http://ogp.me/ns#image'] = array( $image );
            }
        }
    }
    else if ( is_author() && isset( $post->post_author ) ) {
        $meta_tags['http://ogp.me/ns#type'] = 'profile';
        $meta_tags['http://ogp.me/ns/profile#first_name'] = get_the_author_meta( 'first_name', $post->post_author );
        $meta_tags['http://ogp.me/ns/profile#last_name'] = get_the_author_meta( 'last_name', $post->post_author );
        if ( is_multi_author() )
            $meta_tags['http://ogp.me/ns/profile#username'] = get_the_author_meta( 'login', $post->post_author );
    }
    else if ( is_page() ) {
        $meta_tags['http://ogp.me/ns#type'] = 'article';
        $meta_tags['http://ogp.me/ns#title'] = get_the_title();
        $meta_tags['http://ogp.me/ns#url'] = apply_filters( 'rel_canonical', get_permalink() );
    }

    $meta_tags['http://ogp.me/ns/fb#app_id'] = 'FACEBOOK APP ID HERE';

    $meta_tags = apply_filters( 'fb_meta_tags', $meta_tags, $post );

    foreach ( $meta_tags as $property => $content ) {
        fb_output_og_protocol( $property, $content );
    }
}

add_action( 'wp_head', 'fb_add_og_protocol' );

Notes:

  • Version du plugin utilisée: 1.0.1

  • Assurez-vous que le plug-in d'origine lui-même est d'abord désactivé.

  • Remplacez fb_get_locale() par get_locale()

  • Supprimer (LIGNE 905):

    $excerpt_more = apply_filters('excerpt_more', ' ' . '[...]');

    Et remplacez (LIGNE 906):

    $desc_no_html = wp_trim_words( $desc_no_html, $excerpt_length, $excerpt_more );

    Avec ça:

    $desc_no_html = wp_trim_words( $desc_no_html, $excerpt_length );

    Cela corrige un bogue dans le plugin en raison duquel il génère du code HTML codé dans la balise méta og:description ( voir le commentaire de Stephen Hariss ).

  • Remplacez ceci (LIGNES 151-154):

    $options = get_option( 'fb_options' );

if ( ! empty( $options['app_id'] ) )
    $meta_tags['http://ogp.me/ns/fb#app_id'] = $options['app_id'];

    Avec ça:

    $meta_tags['http://ogp.me/ns/fb#app_id'] = 'FACEBOOK APP ID HERE';

    (remplacez l'identifiant de l'application FACEBOOK ICI par, bien, votre numéro d'identification d'application)

  • J'ai toujours ce plugin installé, MAIS désactivé afin de pouvoir surveiller les mises à jour de temps en temps et apporter des modifications si nécessaire.

2
its_me