Document difference between orderby query and sort_field filter

[eliot-akira]

From:

• Add Order to ACF multiple value in loop query  framework#5

Query parameter orderby

The query parameter orderby is supported by the post loop type, which passes it to WP_Query to make a database query.

Similarly, the taxonomy loop type with WP_Term_Query and user loop with WP_User_Query. Each of these is a separate implemenation in WP core with some differences in accepted values.

• Document accepted values of orderby parameter for Post, Taxonomy Term, and User. #7

Generic loop filter sort_field

The generic loop filter sort_field is supported by the base loop, which all loop types are built on.

Any loop type with multiple values, including the result of post queries, can be sorted as long as it's a list of objects with sortable field values (like number, string, date).

• sort_field, sort_order, and sort_type

They're briefly documented here. https://docs.loopsandlogic.com/dynamic-tags/loop/#attributes-1