I want to include something like the the_category function in a WordPress post, which by default echoes a list of links to all categories the post is attached separated by comma, but I want to exclude some categories from listing in certain views. In some cases I have to exclude all children ones from appearing, in others a top category or random specific categories.
I want to include something like the the_category function in a WordPress post, which by default echoes a list of links to all categories the post is attached separated by comma, but I want to exclude some categories from listing in certain views. In some cases I have to exclude all children ones from appearing, in others a top category or random specific categories.
Share Improve this question edited Jan 26, 2011 at 18:30 peroyomas asked Jan 26, 2011 at 15:23 peroyomasperoyomas 3394 silver badges13 bronze badges2 Answers
Reset to default 1Not sure but i think you can try this
function my_category_filter($cats){
//exclude these from displaying
$exclude = array("Large Announcement", "Announcement", "News");
$Catds = array();
foreach ($cats as$cat){
if (!in_array($cat,$exclude)){$Catsa[] = $cat;}
}
return $Catsa;
}
add_filter('the_category','my_category_filter');
Enter this handy function from the WordPress support forums — just add it to your theme’s functions.php file:
function the_category_filter($thelist,$separator=' ') {
// list the IDs of the categories to exclude
$exclude = array(366);
// create an empty array
$exclude2 = array();
// loop through the excluded IDs and get their actual names
foreach($exclude as $c) {
// store the names in the second array
$exclude2[] = get_cat_name($c);
}
// get the list of categories for the current post
$cats = explode($separator,$thelist);
// create another empty array
$newlist = array();
foreach($cats as $cat) {
// remove the tags from each category
$catname = trim(strip_tags($cat));
// check against the excluded categories
if(!in_array($catname,$exclude2))
// if not in that list, add to the new array
$newlist[] = $cat;
}
// return the new, shortened list
return implode($separator,$newlist);
}
// add the filter to 'the_category' tag
add_filter('the_category','the_category_filter', 10, 2);
Initially, I did have some issues with this function; after some tinkering around, I realized I needed a separator declared in the_category() tag, like a comma, dash, etc. In this case, I was using just a space — the_category(' ') — which wasn’t working, but swapping it out for a non-breaking space did the trick: the_category(' ').
Credit: http://www.stemlegal/greenhouse/2012/excluding-categories-from-the-category-tag-in-wordpres/