apply_filters( ‘post_type_link’, string $post_link, WP_Post $post, bool $leavename, bool $sample )

User Contributed Notes

1. Skip to note 4 content

   thejaydip 5 years ago

   You must log in to vote on the helpfulness of this noteVote results for this note: 3You must log in to vote on the helpfulness of this note

   External Link for custom post type using meta field and post format ( Link ).

   if ( ! function_exists( 'set_external_url_post_link' ) ):
   	function set_external_url_post_link( $post_link, $post ) {
   		if ( 'custom_post_type' === $post->post_type ) {
   			$external_url  = get_post_meta( $post->ID, 'MY_META_KEY', true );
   			if ( 'link' == get_post_format( $post->ID ) && ! empty( $external_url ) ) {
   				return $external_url;
   			}
   		}
   		return $post_link;
   	}
   	add_filter( 'post_type_link', 'set_external_url_post_link', 10, 2 );
   endif;
   
   if ( ! function_exists( 'redirect_url_post_link' ) ):
   	function redirect_url_post_link() {
   		global $post;
   		if ( is_single() && ( 'custom_post_type' === get_post_type( $post ) ) ) {
   			$external_url  = get_post_meta( $post->ID, 'MY_META_KEY', true );
   			if ( 'link' == get_post_format( $post->ID ) && ! empty( $external_url ) ) {
   				wp_redirect( $external_url );
   				exit();
   			}
   		}
   	}
   	add_action('template_redirect', 'redirect_url_post_link');
   endif;
2. Skip to note 5 content

   Steven Lin 6 years ago

   You must log in to vote on the helpfulness of this noteVote results for this note: 1You must log in to vote on the helpfulness of this note

   Example migrated from Codex:

   Append the query string for the custom post type ‘my_custom_post_type’ permalink URLs ( uses add_query_arg() and get_post_type() ):

   function append_query_string( $url, $post ) {
       if ( 'my_custom_post_type' == get_post_type( $post ) ) {
           return add_query_arg( $_GET, $url );
       }
       return $url;
   }
   add_filter( 'post_type_link', 'append_query_string', 10, 2 );
3. Skip to note 6 content

   Wajid Ali 7 months ago

   You must log in to vote on the helpfulness of this noteVote results for this note: 0You must log in to vote on the helpfulness of this note

   Here’s a practical example of using the post_type_link filter to remove a custom post type slug (e.g., team-member) from its permalink, and adjusting the main query to recognize those URLs correctly. (See: pre_get_posts)

   // Remove 'wpdocs-cpt' slug from permalinks
   function wpdocs_remove_team_member_slug_only( $post_link, $post ) {
       if ( 'wpdocs-cpt' !== $post->post_type || 'publish' !== $post->post_status ) {
           return $post_link;
       }
   
       // Return URL without the CPT slug
       return home_url( '/' . $post->post_name . '/' );
   }
   add_filter( 'post_type_link', 'wpdocs_remove_cpt_slug_only', 10, 2 );
   
   // Adjust main query to detect wpdocs-cpt posts
   function wpdocs_fix_cpt_query( $query ) {
       if ( ! $query->is_main_query() || is_admin() || ! empty( $query->query_vars['post_type'] ) ) {
           return;
       }
   
       if ( isset( $query->query_vars['name'] ) ) {
           // Check if the slug belongs to a team-member post
           $cpt = get_page_by_path( $query->query_vars['name'], OBJECT, 'wpdocs-cpt' );
   
           if ( $cpt ) {
               $query->set( 'post_type', 'wpdocs-cpt' );
           }
       }
   }
   add_action( 'pre_get_posts', 'wpdocs_fix_cpt_query' );