[Support request] Limit number of tags and categories in post

[Marius]

This is the function from @Tom to move categories and tags above the title of the post.

add_action( 'generate_before_content', 'tu_add_meta_below_title' );
function tu_add_meta_below_title() {
	if ( is_single() ) {
    $categories_list = get_the_category_list( _x( ', ', 'Used between list items, there is a space after the comma.', 'generatepress' ) );
    $categories_list = sprintf( '<span class="cat-links"><span class="screen-reader-text">%1$s </span>%2$s</span>',
        _x( 'Categories', 'Used before category names.', 'generatepress' ),
        $categories_list
    );

    $tags_list = get_the_tag_list( '', _x( ', ', 'Used between list items, there is a space after the comma.', 'generatepress' ) );
    $tags_list = sprintf( '<span class="tags-links"><span class="screen-reader-text">%1$s </span>%2$s</span>',
		esc_html_x( 'Tags', 'Used before tag names.', 'generatepress' ),
			$tags_list
	);

	?>
	<div class="entry-meta">
		<?php echo $categories_list; ?> | <?php echo $tags_list; ?>
	</div>
	<?php
}
}

How can we limit the number of categories to 1 and the number of tags to 2 or 3? Very important, when limiting the number of cats and tags, how can we randomize it? All the functions I found so far are only limiting the number but are showing the tags in alphabetical order meaning on the post you will always see the same tags, which I want to avoid.
So if I have a post with 10 tags I want to display only 3 at a time, and every time you load that page to display randomly other 3.

Any suggestion is much appreciated.

[David]

Hi there,

maybe this function is what you’re looking for:

https://wordpress.stackexchange.com/a/160130

[Marius]

Hey David,
Thank you for your reply. I found something and adapted it. Can anyone confirm this code is OK to use and doesn’t create any problems? (I am not a programmer and have no clue what’s happening :P)

//Tags limit random
add_filter('term_links-post_tag','limit_to_five_tags');
function limit_to_five_tags($terms) {
shuffle($terms);
return array_slice($terms,0,3,true);
}
//Categories limit random
add_filter('the_category_list','limit_to_one_cat');
function limit_to_one_cat($terms) {
shuffle($terms);
return array_slice($terms,0,1,true);
}

[David]

Looks good to me!

[Author]

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