Hey again Pocket Flan
This is something I’ve been looking at for a while.
So as I was saying before, your site uses the built in templates that come with your theme to display the results, so we have to modify those templates directly.
Lets take the 2013 theme as an example, and examine the category.php template file it uses.
To display the Category on the Category archive page the template file uses the following code to output its category:
<?php printf( __( 'Category Archives: %s', 'twentythirteen' ), single_cat_title( '', false ) ); ?>
the function single_cat_title will always display only one category, even if we are filtering by multiple categories.
This seems like something that is inherently wrong with WP, as almost all different methods to obtain the current category will only ever return 1 category.
(See my comment on Stack Exchange – http://wordpress.stackexchange.com/questions/18652/get-category-id-inside-category-template/115291#115291)
So what we have to do, is use the wp_query object to return the URL parameter with the categories in it, and extract them from there.
Place the following code at the top of category.php (inside the php tag) to output the categories as a comma seperated list:
$categories = [];
if(isset($wp_query->query['category_name']))
{
$category_params = explode("+",esc_attr($wp_query->query['category_name']));
foreach($category_params as $category_param)
{
$category = get_category_by_slug( $category_param );
if(isset($category->cat_ID))
{
$categories[] = $category->name;
}
}
echo "<h2>Categories:</h2>";
echo implode($categories, ", ");
}
I guess from there you have all you need to integrate that with your template.
I am looking at integrating this with the plugin but I’m not sure how I could hook in to different themes templates reliably and include this, or if I should provide a function that allows people to just drop it in to their template files… 😉
