Helper functions for accessing 'tax_query', 'query', 'meta_query' WP Query properties

[ejdanderson]

In the current state, to access the 'tax_query', 'query', 'meta_query', we must do so via the global $wp_query. It would be useful have access to these properties via getters, similar to get_queried_object or get_query_var.

Example use case: Having a second loop on a page displaying a filtered or adjusted version of the main loop.

[scribu]

The tax_query property is accessible from any WP_Query instance:

$my_query = new WP_Query( array(
  'tax_query' => array(
    ...
  )
) );

var_dump( $my_query->tax_query );

[ejdanderson]

Replying to scribu:

The tax_query property is accessible from any WP_Query instance:

$my_query = new WP_Query( array(
  'tax_query' => array(
    ...
  )
) );

var_dump( $my_query->tax_query );

Yes, but we could also do that with the get_queried_object. get_query_var, have_comments etc.. methods, which are just wrappers for the global $wp_query object methods. Is it because these are properties and not methods?

[scribu]

Unlike get_queried_object() and the rest, the tax_query and meta_query properties are not something you should be using very often. It's an implementation detail.

Therefore, we shouldn't promote them by adding helpers for accessing them.