[wp-trac] [WordPress Trac] #36344: WP_Query: Allow passing a string for post_parent__not_in

[WordPress Trac]

#36344: WP_Query: Allow passing a string for post_parent__not_in
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 Reporter:  tavo962      |       Owner:
     Type:  enhancement  |      Status:  new
 Priority:  normal       |   Milestone:  Awaiting Review
Component:  Query        |     Version:  4.4.2
 Severity:  normal       |  Resolution:
 Keywords:               |     Focuses:
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Comment (by swissspidy):

 `post_parent__not_in` is not the only parameter that is required to be an
 array. In fact, only few can be either a string or an array, e.g
 `post_type`, `orderby` and `post_status`. For these params it makes sense,
 because most of the time you'll only need to pass a single string.

 In my opinion array-only makes sense for `post_parent__not_in` because
 developers usually populate it with dynamic values (e.g. from an other
 query).

 In any case, if this enhancement gets traction, `post_parent__not_in`
 shouldn't be the only one being changed.

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Ticket URL: <https://core.trac.wordpress.org/ticket/36344#comment:2>
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