Subcategories Grid in Oxygen

This members-only tutorial provides the steps to display a grid of subcategories (if present) or a grid of posts (if there are no subcategories) on category archive pages in Oxygen.

Step 1

Let's add a custom function using which we can check if a particular category has subcategories or not.

Install and activate Code Snippets plugin.

Go to Snippets > Add New.

Title: has_term_have_children()

Code: