[wp-trac] [WordPress Trac] #38278: Only query taxonomies assigned to the post types being queried

[WordPress Trac]

#38278: Only query taxonomies assigned to the post types being queried
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 Reporter:  desrosj      |      Owner:
     Type:  enhancement  |     Status:  new
 Priority:  normal       |  Milestone:  Awaiting Review
Component:  Taxonomy     |    Version:  trunk
 Severity:  normal       |   Keywords:
  Focuses:               |
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 While working on #31383 (Add `WP_Tax_Query` support to `WP_User_Query`),
 it was brought up that taxonomy queries do not check to see whether the
 requested taxonomies are registered to the requested post type.

 Opening this ticket to discuss further. Should taxonomies always match the
 queried `post_type`?

 From @boonebgorges on the other ticket:
   Here's a way to frame the issue: are we likely to confuse developers if
 we allow (ie, don't throw errors for) queries like `get_users( ...
 'tax_query' => ... 'taxonomy=post_tag' )`? Or `get_posts( ... 'tax_query'
 => ... 'taxonomy=some_user_taxonomy' )`? Or maybe these queries will just
 always end up empty? We should think through the possible confusions (or,
 maybe, lack thereof).

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Ticket URL: <https://core.trac.wordpress.org/ticket/38278>
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