Post Navigation – How exclude a category from "next" and "previous" post links?

[Sebastian]

Hi Tom,

How exclude a category from “next” and “previous” post links?

Regards, Sebastian

[Leo]

Hi Sebastian,

Is this what you have in mind? https://generatepress.com/forums/topic/exclude-category-from-loop/#post-111543

Let us know.

Documentation: http://docs.generatepress.com/
Adding CSS: http://docs.generatepress.com/article/adding-css/

[Sebastian]

Hi Leo,

Thank you for your quick response. No, that’s not what I mean. I try to explain it differently.

In a post content you can see the “post navigation”. (.entry-meta -> .nav-previous and .nav-next). How I would like to exclude a category from this navigation. I hope you understand what i mean.

[Tom]

Hmm, it looks like you would need to overwrite the entire function and then follow what they did here: http://wordpress.stackexchange.com/questions/176146/excluding-a-category-from-next-and-previous-post-links

This is the function you would need to overwrite: https://github.com/tomusborne/generatepress/blob/2.0.2/inc/structure/post-meta.php#L12-L82

Documentation: http://docs.generatepress.com/
Adding CSS: http://docs.generatepress.com/article/adding-css/
Ongoing Development: https://generatepress.com/ongoing-development

[Sebastian]

Thank you very much. I’ll try it

[Sebastian]

Great, it works. Thanks.

I just added $excluded_terms = '1' (1 = Category ID) to previous_post_link and next_post_link in template-tags.php

[Tom]

Glad you got it working 🙂

Documentation: http://docs.generatepress.com/
Adding CSS: http://docs.generatepress.com/article/adding-css/
Ongoing Development: https://generatepress.com/ongoing-development

[Sebastian]

Hi Tom, is there another way? It is tedious to update the lines in template-tags.php after each theme update.

[Tom]

You can copy the entire function (including ! function_exists()) and add it to your child theme/functions file.

It will overwrite the parent function.

Documentation: http://docs.generatepress.com/
Adding CSS: http://docs.generatepress.com/article/adding-css/
Ongoing Development: https://generatepress.com/ongoing-development

[Feri]

so the template tags move to inc/structure/post-meta, right?

and i dont know how to add that code. i found this code…

<?php if ( is_single() ) : // navigation links for single posts.
                
				previous_post_link( '<div class="nav-previous"><span class="prev" title="' . esc_attr__( 'Previous', 'generatepress' ) . '">%link</span></div>', '%title', $category_specific );
				next_post_link( '<div class="nav-next"><span class="next" title="' . esc_attr__( 'Next', 'generatepress' ) . '">%link</span></div>', '%title', $category_specific );

			elseif ( is_home() || is_archive() || is_search() ) : // navigation links for home, archive, and search pages.

				if ( get_next_posts_link() ) : ?>
					<div class="nav-previous"><span class="prev" title="<?php esc_attr_e( 'Previous', 'generatepress' );?>"><?php next_posts_link ( __( 'Older posts', 'generatepress' ) ); ?></span></div>
				<?php endif;

				if ( get_previous_posts_link() ) : ?>
					<div class="nav-next"><span class="next" title="<?php esc_attr_e( 'Next', 'generatepress' );?>"><?php previous_posts_link ( __( 'Newer posts', 'generatepress' ) ); ?></span></div>
				<?php endif;

can you help how to add $excluded_terms = '1' more detail.

thank you very much

[Tom]

Looked through some core WP code and found a filter we can use instead.

For example:

add_filter( 'get_next_post_excluded_terms', 'tu_exclude_terms' );
add_filter( 'get_previous_post_excluded_terms', 'tu_exclude_terms' );
function tu_exclude_terms() {
    return array( 10, 15 );
}

10 and 15 being the IDs of the terms you wish to exclude.

Documentation: http://docs.generatepress.com/
Adding CSS: http://docs.generatepress.com/article/adding-css/
Ongoing Development: https://generatepress.com/ongoing-development

[Feri]

actually i dont understand how to implement that code. something like this?

<?php if ( is_single() ) : // navigation links for single posts.

add_filter( 'get_next_post_excluded_terms', 'tu_exclude_terms' );
add_filter( 'get_previous_post_excluded_terms', 'tu_exclude_terms' );
function tu_exclude_terms() {
    return array( 10, 15 );
}
				previous_post_link( '<div class="nav-previous"><span class="prev" title="' . esc_attr__( 'Previous', 'generatepress' ) . '">%link</span></div>', '%title', $category_specific );
				next_post_link( '<div class="nav-next"><span class="next" title="' . esc_attr__( 'Next', 'generatepress' ) . '">%link</span></div>', '%title', $category_specific );

[Tom]

You would just add the code I shared using one of these methods: https://docs.generatepress.com/article/adding-php/

Then you would need to upload the 10 and 15 values to the actual IDs of the terms you wish to exclude.

Documentation: http://docs.generatepress.com/
Adding CSS: http://docs.generatepress.com/article/adding-css/
Ongoing Development: https://generatepress.com/ongoing-development

[Feri]

add_filter( 'get_next_post_excluded_terms', 'tu_exclude_terms' );
add_filter( 'get_previous_post_excluded_terms', 'tu_exclude_terms' );
function tu_exclude_terms() {
    return array(3453);
}

i add the code to snippet plugin and nothing happen, post under category 3453 still showing at next/previous pagination

[Tom]

Can you link me to the category?

Documentation: http://docs.generatepress.com/
Adding CSS: http://docs.generatepress.com/article/adding-css/
Ongoing Development: https://generatepress.com/ongoing-development

[Author]

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