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

User Contributed Notes

1. Skip to note 3 content

   thejaydip 3 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 4 content

   Steven Lin 4 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 );