We can get posts from a category using below request

    `/wp/v2/posts?categories=1&search=somequery`

It only gives results from category(1) only. How can we get results from category(1) and from all subcategories of category(1) also? Than You.

We can get posts from a category using below request

    `/wp/v2/posts?categories=1&search=somequery`

It only gives results from category(1) only. How can we get results from category(1) and from all subcategories of category(1) also? Than You.

• plugin-development
• rest-api

2 Answers 2

This answer has what you want https://wordpress.stackexchange/a/314152/49962

WP already does this out of the box thanks to the include_children parameter of tax_query which is true by default.

So you do not need to tell it the sub-terms, just do something like this:

/wp/v2/posts?categories=1

Where categories=1 is the parent category ID

You'll need to do an additional call to find the IDs of the subcategories – there is no way to get posts from subcategories by only including the parent category in the search.

/wp/v2/categories?parent=ID&per_page=0&

This call will return an array of category objects, grab the IDs of those objects and pass them to your request for posts:

/wp/v2/posts?categories=1,A,B,C,D&search=somequery