Avoid WordPress categorizing a permalink request as Not found 404 Page

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I’ve been looking all over the web for something like what I need and I haven’t find anything resemble not even similar, the thing is this:

I got a Page Template to a simple page post type, let’s say ‘Fruits’ and then in this template I am calling a Web Services that will bring back all fruits with a certain description, the url of this is www.mydomain.com/fruits/

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I am not populating WordPress database with this information but taking it from an external service and I want to navigate the content with it details in WordPress templates design, so what I need is be able to click on ‘orange’ so I would be creating a link like this:

www.mydomain.com/fruits/orange/ —> This would be my permalink that is not registered

This non-existing permalink will redirect me immediately to the 404 Template page and it will be categorized in the wp_query object as ‘404’ = true, I want to avoid wordpress from processing it as a 404 and tweak it inners to send this request to a custom-template that will display the details of orange.

Please If you got any idea which hook can I use that doesn’t involve WP_Rewrite (which I tried all kind of combinations with no success) I will be forever grateful.

Thanks in advance.

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2 comments

  1. As I hinted at in my comment, I would use the rewrite API to handle this, specifically by adding a rewrite endpoint. That way you don’t have to deal with working out what’s an actual 404, and what’s a request for one of your dynamically generated pages. It doesn’t give you exactly the URL structure you have in your question, but I think it’s a reasonable compromise in this case.

    First we add the rewrite endpoint. In this example I’ve used type, so your URLs would be /fruit/type/orange/:

    function wpa_rewrite_endpoint(){
    add_rewrite_endpoint( 'type', EP_PAGES );
}
add_action( 'init', 'wpa_rewrite_endpoint' );

    Now within your template, you can check if type has been set and you’ll know to fetch that keyword from your webservice:

    if( $requested_type = get_query_var( 'type' ) ){
    // pass $requested_type to webservice
}

    You also might want to look into the Transients API for caching the data locally, if you get a lot of hits and the extra http requests are slowing things down.

  2. If you have no other option and have to use 404 redirection. You would use template_redirect action hook. 

    function custom_404_redirect()
{
    if( is_404() )
    {
    // wp_redirect(site_url()); redirect to another page or 
        include( get_template_directory() . '/custom-404.php' ); // use a template
        exit();
    }
}
add_action( 'template_redirect', 'custom_404_redirect' );

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