In WordPress, you can easily save metadata for your posts, pages and other custom content types, however saving metadata for use with your taxonomies used to be an overly complex process (I even wrote a previous article about it here!).
To get it all to work you would need to save your term metadata as a field inside your wp_options table for each piece of data, meaning potentially you could have hundreds, if not thousands of extra entries if you had a decent amount of terms or just several customized taxonomies.
However, since WordPress 4.4 and beyond, terms are now objects, the same as posts, pages and custom content types. This change makes it much easier to add, remove and update your metadata.
The Backstory with Term Meta
The community has been pushing for an easy way to control term metadata since way back in WordPress 2.8. It’s been a slow process, but finally terms have been re-designed from the ground up to use a class structure. This plus a few different changes in WordPress 4.4 means that terms in a taxonomy (such as ‘tags’, ‘categories’ or custom) can now have their own meta easily assigned to them.
Continue reading %Introduction to WordPress Term Meta and WP_Term%
by Simon Codrington via SitePoint
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