[wp-trac] [WordPress Trac] #40950: wp_terms_checklist() does not pass $post_id to current_user_can()

[WordPress Trac]

#40950: wp_terms_checklist() does not pass $post_id to current_user_can()
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 Reporter:  anigel          |      Owner:
     Type:  defect (bug)    |     Status:  new
 Priority:  normal          |  Milestone:  Awaiting Review
Component:  Administration  |    Version:  trunk
 Severity:  normal          |   Keywords:
  Focuses:                  |
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 An incorrect post_id gets passed in $args to a filter on map_meta_cap,
 when wp_terms_checklist() does a capability check to see if category
 checkboxes should get a disabled attribute.

 `$args['disabled'] = ! current_user_can( $tax->cap->assign_terms );`


 We had an issue where we were checking the post type in a map_meta_cap
 filter and it was always showing a standard post type instead of the
 appropriate custom post type leading to category checkboxes being
 disabled.

 Expected behaviour: The post_id passed in $args to the map_meta_cap
 callback should relate to the post being edited / created

 How to recreate:
 1. Create a custom Post Type
 2. Add a filter on map_meta_cap
 3. Create or edit a post
 4. Check the value passed in $args to your filter when wp_terms_checklist
 does a capability check to see if categories should get a disabled
 attribute.

 Workaround: Use the global $post variable instead of the passed post_id

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Ticket URL: <https://core.trac.wordpress.org/ticket/40950>
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