[wp-trac] [WordPress Trac] #25177: map_meta_cap() doesn't require $post_author_data

[WordPress Trac]

#25177: map_meta_cap() doesn't require $post_author_data
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 Reporter:  duck_         |      Owner:
     Type:  defect (bug)  |     Status:  new
 Priority:  normal        |  Milestone:  Awaiting Review
Component:  Performance   |    Version:  2.0
 Severity:  normal        |   Keywords:  has-patch
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 `map_meta_cap()` sets up `$post_author_data` to check if a user is
 editing/deleting/reading their own post. However, the only piece of data
 required is the ID. To get this data we already have `$post_author_id`
 from `$post->post_author` or `$user_id`.

 Related: [21563] for #21120 did some optimisations to avoid
 `get_userdata()`

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Ticket URL: <http://core.trac.wordpress.org/ticket/25177>
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