[Support request] Display post navigation to show PREVIOUS and NEXT for particular category

Hi there,

try adding this PHP snippet:

add_filter( 'generate_post_navigation_args', function( $args ) {
    if ( is_single() && ! in_category('your_category_slug') ) {
        // Display default post navigation if NOT in category
        $args['previous_format'] = '<div class="nav-previous">' . generate_get_svg_icon( 'arrow-left' ) . '<span class="prev" title="' . esc_attr__( 'Previous', 'generatepress' ) . '">%link</span></div>';
        $args['next_format'] = '<div class="nav-next">' . generate_get_svg_icon( 'arrow-right' ) . '<span class="next" title="' . esc_attr__( 'Next', 'generatepress' ) . '">%link</span></div>';
    }
    elseif ( is_single() && in_category('your_category_slug') ) {
        // Display Next Previous on specifc category
        $args['previous_format'] = '<div class="nav-previous"><span class="prev" title="' . esc_attr__( 'Previous', 'generatepress' ) . '">Previous</span></div>';
        $args['next_format'] = '<div class="nav-next"><span class="next" title="' . esc_attr__( 'Next', 'generatepress' ) . '">Next</span></div>';
    }

    return $args;
} );

You will see there are two conditions where you need to replace your_category_slug – that will be the category for where you want to change the label in both instances.

Hi there,

Can you link us to a sample page in question? So we could inspect the links for any issues.

Thanks.

I think that’s because the elseif didn’t have the %link so there’s no link rendered.

Try this:

add_filter( 'generate_post_navigation_args', function( $args ) {
	$prev_post = get_adjacent_post( true, '', true, 'category' );
	$next_post = get_adjacent_post( true, '', false, 'category' );
	
    if ( is_single() && ! in_category('featured') ) {
        // Display default post navigation if NOT in category
        $args['previous_format'] = '<div class="nav-previous">' . generate_get_svg_icon( 'arrow-left' ) . '<span class="prev" title="' . esc_attr__( 'Previous', 'generatepress' ) . '">%link</span></div>';
        $args['next_format'] = '<div class="nav-next">' . generate_get_svg_icon( 'arrow-right' ) . '<span class="next" title="' . esc_attr__( 'Next', 'generatepress' ) . '">%link</span></div>';
    }
    elseif ( is_single() && in_category('featured') ) {
        // Display Next Previous on specifc category
        $args['previous_format'] = '<div class="nav-previous"><span class="prev" title="' . esc_attr__( 'Previous', 'generatepress' ) . '"><a href="'.get_permalink( $prev_post->ID ).'">Previous</a></span></div>';
        $args['next_format'] = '<div class="nav-next"><span class="next" title="' . esc_attr__( 'Next', 'generatepress' ) . '"><a href="'.get_permalink( $next_post->ID ).'">Next</a></span></div>';
    }

    return $args;
} );

Change featured to your category slug.

Thanks heaps Elvin – I think we are nearly there.
It works great but the only thing is the Next and Previous links are the wrong way around?
When I click on Previous the next post opens up and when I click on Next the previous post opens up?
I use Post types order plugin to order the posts in the archive.
Is there a way for the Next and Previous links to correspond with the archive menu order?
I really appreciate your great help.

It looks like as WordPress intended.

“Previous” points to the “older” adjacent post. “Next” points to the “newer” adjacent post.

But if you wish to change that, Swap the values.

Try modifying this:

$prev_post = get_adjacent_post( true, '', true, 'category' );
	$next_post = get_adjacent_post( true, '', false, 'category' );

into this:

$prev_post = get_adjacent_post( true, '', false, 'category' );
	$next_post = get_adjacent_post( true, '', true, 'category' );

But still wrong way around for post links? Is this able to be changed around as well?

I’m not sure what you mean. Is there any specific condition you want the adjacent posts to be?

Like, for example, you only want adjacent posts from the same category?

Let us know.

Can you try adding this filter? so the post stays within its category

add_filter('generate_category_post_navigation','__return_true');

No problem. Glad you got it sorted. 🙂