[Support request] filter php to show blog post by category without header, navigation and footer

Hi there,

does it have to be a PHP Snippet?
As you can do it with the GP layout element:

https://docs.generatepress.com/article/layout-element-overview/

Let me know.

What would be special about that URL? eg. a URL Parameter.

If so, then you could:

1. create the Layout Element, and use that to disable the header etc.
2. But DO NOT set the Display Rules
3. Then use the generate_element_display filter to display that element when a custom condition is met, such as checking for a URL param:

add_filter( 'generate_element_display', function( $display, $element_id ) {
    if ( 99 === $element_id && isset( $_GET['your-url-param'] ) ) {
        $display = true;
    }

    return $display;
}, 10, 2 );

Let me know.

Hi Cristiana,

It’s the same concept. The parameter is just added after.

In this way, no extra code is needed.

So, the example link would now be something like this with David’s code: https://magazine.dooid.it/toscana/?your-url-param

You can replace your-url-param with anything you prefer.

The code is a PHP Snippet, this doc explains:

https://docs.generatepress.com/article/adding-php/

Sorry, we don’t offer video calls or screen sharing for our support service.

What exact step did you take to add it?

If you haven’t tried, can you install the plugin Code Snippets: https://wordpress.org/plugins/code-snippets/

1. In your Admin dashboard, go to Snippets > Add new.

2. Add your code and set it to “Run snippet everywhere”.

3. Click on “Save changes and activate”.

1. Edit your Layout Element, and in the browser URL bar you will see the url, it will look something like this:

yourdomain.com/wp-admin/post.php?post=202&action=edit

The 202 is the ID, look for the ID of your Element and make a note of it.

Then in the code snippet – for reference:

add_filter( 'generate_element_display', function( $display, $element_id ) {
    if ( 99 === $element_id && isset( $_GET['your-url-param'] ) ) {
        $display = true;
    }

    return $display;
}, 10, 2 );

Where there is the 99 replace that with Element ID.

Then where it says: $_GET['your-url-param'] change the your-url-param for the parameter you want to use to activate the layout.

You should now be able to use the link with the URL Param to make that work.