[wp-trac] [WordPress Trac] #60563: WP_Query::tax_query property could be null

[WordPress Trac]

#60563: WP_Query::tax_query property could be null
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 Reporter:  manooweb     |       Owner:  audrasjb
     Type:  enhancement  |      Status:  accepted
 Priority:  normal       |   Milestone:  6.5
Component:  Query        |     Version:
 Severity:  normal       |  Resolution:
 Keywords:  has-patch    |     Focuses:  docs
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Comment (by manooweb):

 Replying to [comment:3 audrasjb]:
 > @manooweb quick question: do you have any example of a situation where
 `tax_query ` could be `null`?

 It isn't so easy to reply.
 If I'm not mistaken, I saw `tax_query` is set only in some conditions by
 calling `WP_Query::parse_tax_query()` in `WP_Query::parse_query()` or
 `WP_Query::get_posts()`. So it's possible that this property isn't set and
 instantiate because `WP_Query::parse_tax_query()` isn't executed.
 https://github.com/WordPress/WordPress/blob/6.4.3/wp-includes/class-wp-
 query.php#L1372

 It's simply a documentation proposition.
 When we try to access to the global variable `$wp_query` (or
 `$wp_the_query`) we have no chance to know the `tax_query` property has
 been set yet because this property isn't set by the `WP_Query`
 instantiation but during the `WP_Query::get_posts()` execution.

 I hope it's clearer.

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Ticket URL: <https://core.trac.wordpress.org/ticket/60563#comment:4>
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