WordPress.org

Custom actions & filters

Actions

• facebook_notify_plugin_conflicts - executes code to notify site administrators of possible conflicts with other plugins by iterating through a list of all installed plugins and highlighting known conflicts at the time the Facebook plugin for WordPress was released. Some publishers may wish to remove this check for efficiency.
• facebook_settings_before_header_$hook_suffix - add content to a settings page before the main page header section
• facebook_settings_after_header_$hook_suffix - add content to a settings page after the main page header section
• facebook_settings_footer_$hook_suffix - add content to a settings page below the wrapper div
• facebook_comment_form_before - comment form pluggable action replacing the WordPress comment_form() equivalent action comment_form_before
• facebook_comment_form_after - comment form pluggable action replacing the WordPress comment_form() equivalent action comment_form_after

Filters

• facebook_features - limit the plugin features available on your site
• fb_conflicting_plugins - add or remove plugin URLs used by the plugin to warn against potential conflicts
• facebook_jssdk_init_options - customize arguments sent to the FB.init function of the Facebook JavaScript SDK
• facebook_jssdk_init_extras - add extra JavaScript to the fbAsyncInit JavaScript function called after the Facebook JavaScript SDK is loaded
• facebook_content_filter_priority - choose the priority of Facebook social plugin filters attached to the_content filter. Affects where Facebook content is output on your page relative to other plugins attached to the_content
• fb_locale - directly define your site locale based on the list of Facebook locale mappings
• facebook_excerpt_length - choose a custom length, in words, of a post excerpt generated for use in the Open Graph protocol description. default: 55
• facebook_excerpt_more - string appearing at the end of a truncated excerpt string. default: "…"
• fb_rel_canonical - customize the canonical URL used by Facebook for a post. Affects Open Graph protocol URL definitions, URL references sent in Open Graph actions, and more. default: result of get_permalink()
• facebook_comment_schema_org - override output of search engine friendly comments content using Schema.org microdata markup
• facebook_comments_number_more - override the default "% Comments" text used to generate a client-side comments number. similar to WordPress' comments_number more parameter.
• facebook_anchor_target - customize the browsing context name used for links to Facebook output alongside your post such as mentions. default: _blank
• facebook_mentions_classes - add or remove HTML classes from the parent HTML div element of mentions links
• fb_meta_tags - Customize Open Graph protocol markup before it is output to the page
• facebook_ogp_prefixed - true to always use prefixed properties (og:title) or false to use full IRI properties (http://ogp.me/ns#title)
• facebook_rdfa_mappings - array of RDFa references with desired prefix. Used to remap Open Graph protocol properties from a full IRI to a prefix
• facebook_wp_comments_title - set a custom title for the Facebook comments template
• facebook_wp_list_comments - customize the arguments sent to wp_list_comments for display of WordPress comments inside the Facebook comments template
• facebook_comments_wrapper - override the display of Facebook comments fetched from Facebook servers for display on the page. default: noscript. set to an empty string to prevent fetch and inclusion
• fb_get_user_meta - fetch a user meta value by attaching to this filter, bypassing the WordPress user meta API
• fb_update_user_meta - update a user meta value by attaching to this filter, bypassing the WordPress user meta API
• fb_delete_user_meta - delete a user meta value by attaching to this filter, bypassing the WordPress user meta API