[Support request] Exclude a category from "Previous Next articles"

[Elia]

Hi there,

Could you please help me exclude the category from the “Previous Next articles” section?

[Elia]

By exclude I meant 2 things.

1) When you go to the blog and go to the previous/next articles you shouldn’t see links to 1 of the categories
2) However, when we open this category directly on the website you should be able to other link within this categories using the previous/next articles section

Please let me know if I’m nor clear

[David]

Hi there,

you can remove the category link in Customizer > Layout > Blog –> Single Tab > Display Post Cateogries

To limit the scope of the post links to the current category you can use the filter that Tom provides here:

https://generatepress.com/forums/topic/behavior-of-next-previous-post-links/#post-884910

[Elia]

Thanks, David!

However, this is not what we need.

Let’s say we have 4 categories:
Category A links
Category B links
Category C links
Category D links

We would like to isolate all links within one of the categories.

To do so we need 2 things:

1) Exclude Category C links from the previous/next section when you visit posts from other categories. As a result when let’s say you visit a post from the Category A, you won’t see a link to Any post leading to Category C in the previous/next section
2) This step is OPTIONAL (If it’s hard to do then just the first thing is fine).
When you visit a category Category C and go to the previous/next section you should only see the links within Category C.

Please let me know if I’m not clear

[David]

If i understand correctly, then the Function that Tom provides here is what you need for point 1:

https://generatepress.com/forums/topic/post-navigation-how-exclude-a-category-from-next-and-previous-post-links/page/2/#post-483128

[Elia]

Thanks David,

The Tom’s code is to isolate each category from each other. In our case we need to isolate just 1 category from others

[David]

I think this may require some custom development, so before we look at to see if we can help lets make sure i fully understand 🙂

Posts within Category C
Post Navigation to be limited to posts within Category C only.

Posts not within Category C
Post Navigation to work as per default but to exclude Posts from Category C.

Is that correct?

[Elia]

Yes, David. Thanks a lot!

[Tom]

Hi there,

I’m not 100% sure this will work, but it’s worth a shot:

add_filter( 'generate_category_post_navigation', function( $in_same_term ) {
    if ( has_category( 'Category C' ) ) {
        $in_same_term = true;
    }

    return $in_same_term;
} );

add_filter( 'get_next_post_excluded_terms', 'tu_filter_excluded_terms' );
add_filter( 'get_previous_post_excluded_terms', 'tu_filter_excluded_terms' );
function tu_filter_excluded_terms( $excluded_terms ) {
    if ( ! has_category( 'Category C' ) ) {
        $excluded_terms[] = 10; // The ID of Category C.
    }

    return $excluded_terms;
}

[Elia]

Hi Tom,

thanks a lot!

For some reason the code doesn’t work. Could it be because my posts belongs not to category itself but to subcategories?

[Tom]

Hi there,

Did neither function work? The second one is somewhat experimental, but the first one should work if the has_category() condition is correct.

Let me know 🙂

[Elia]

Hi Tom,

Do I need to just change the category ID in your code, right?

If yes, then the code doesn’t work for some reason

[Leo]

I think you will need to change Category C and 10

[Elia]

Thanks Leo, do I have to change the “Category C” to the exact name of the category? I tried that it doesn’t work

[Tom]

Can you share the function you’re using?

Also, can you link me to the page where it should be working?

Thanks!

[Author]

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