Inherit author from global query

[draganescu]

What?

Fixes #40431

Why?

When building author archive templates the author block should still render even if there are no posts.

How?

If there is no context we default to trying to get the author from the global query.

Testing Instructions

1. Open Site Editor.
2. Navigate to the Templates List.
3. Click "Add" and add in an author template.
4. Add a Post Author block at the top of the template.
5. Add a Query Loop below it with the option of “Inherit query from template” selected.
6. Publish the template.
7. View an author with posts and see the author name.
8. View an author without posts and notice the author still shows

Notes

• Is it a better fix to make the default context come from the global wp query?

[draganescu]

@Mamaduka Great suggestion! We do all these guards in post template or query no results as well. Why? get_query_var assumes there always is a global $wp_query so this line if ( $wp_query && isset( $wp_query->query_vars ) && is_array( $wp_query->query_vars ) ) in both

• packages/block-library/src/post-template/index.php, and
• packages/block-library/src/query-no-results/index.php

could go away?

[Mamaduka]

@draganescu, we need all the global arguments to build an inherit query in both cases. Maybe we should propose get_query_vars() function for getting all the arguments.

[Mamaduka]

It works as expected. Thanks, @draganescu!