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You now have categories, tags and a custom post type set up to work with media attachments. As you’ve seen, it is possible to apply categories and tags to media attachments such as images and PDF files by using the register_taxonomy_for_object_type () function.
How to create a custom taxonomies plugin for posts?
Please make sure to read the Plugin Basics chapter before attempting to create your own plugin. Go to Posts > Add New page. You will notice that you only have Categories and Tags. Register the Taxonomy “course” for the post type “post” using the init action hook. Activate your plugin, then go to Posts > Add New.
How to display taxonomy in a template file?
In the template file for a given taxonomy, display a link to all attachments with the queried term beneath the listing of posts with that term, with direct links to the attachment files – you would use two custom queries in your template file to do this.
How to register a taxonomy for a post?
Register the Taxonomy “course” for the post type “post” using the init action hook. Activate your plugin, then go to Posts > Add New. You should see a new meta box for your “Courses” Taxonomy.
How to create a taxonomy in wporg plugin?
The function register_taxonomy () creates a new Taxonomy with the identifier course for the post Post Type using the $args array for configuration. The function add_action () ties the wporg_register_taxonomy_course function execution to the init action hook.
What do you call a taxonomy in WordPress?
This is something most people encounter in biology classes, and it is known as the Linnaean Taxonomy. In WordPress, a “taxonomy” is a grouping mechanism for some posts (or links or custom post types).
How to apply tags and categories to attachments?
As you’ve seen, it is possible to apply categories and tags to media attachments such as images and PDF files by using the register_taxonomy_for_object_type() function. You can also create a new taxonomy using register_taxonomy() and apply it to media attachments, either on their own or along with other content types.
How are taxonomies stored in the WordPress media library?
However, taxonomies can be added to any WordPress post type like pages, attachments, or any custom post type you may be using on your blog. When you add an image to your WordPress posts or pages, it is stored in WordPress media library as an attachment. Attachment is a post type which means it can have its own taxonomies as well.
Simply go to Media » Library and click on the list view button at the top. This will open media library in the list view. Click on the ‘Edit’ link below any image and WordPress will take you to edit image page. You will notice the new category meta box in the right hand column on the screen.