Show Previous/Next Posts navigation only inside the same category

Question

Is it possible to force previous/next navigation to browse through the posts (back and forth) that are only inside the same category (and to exclude other categories)?

Answer 1

The functions accept an $in_same_cat argument, the default value of which is false. Just set that to true.

previous_post_link($format, $link, true);
next_post_link($format, $link, true);

Answer 2

You can use the following code in single.php loop to display nex/pre links in same category

<?php


get_template_part( 'content', get_post_format() );

 // Previous/next post navigation.
previous_post_link('%link', 'Before', true );
next_post_link( '%link', 'Next', true );

?>