[wp-trac] [WordPress Trac] #33975: Improve capabilities management when registering custom taxonomy

[WordPress Trac]

#33975: Improve capabilities management when registering custom taxonomy
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 Reporter:  slaFFik      |      Owner:
     Type:  enhancement  |     Status:  new
 Priority:  normal       |  Milestone:  Awaiting Review
Component:  Taxonomy     |    Version:
 Severity:  normal       |   Keywords:
  Focuses:               |
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 Currently we have such caps when using `register_taxonomy()`
 [https://codex.wordpress.org/Function_Reference/register_taxonomy#Arguments
 codex]:
     'manage_terms' - 'manage_categories'
     'edit_terms' - 'manage_categories'
     'delete_terms' - 'manage_categories'
     'assign_terms' - 'edit_posts'

 IMO, setting `manage_terms` to false block access to page (cheating
 message),
 setting `edit_terms` to false displays this message: "You are not allowed
 to edit this item.", which is very odd. Editing means editing, So I should
 not be able to use Quick Edit and Edit links (they should be hidden).

 Also, I propose to add a `create_terms` capability maping - for displaying
 the add term form and giving ability to create them, separately from
 editing/deleting.

 Related: #22511

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Ticket URL: <https://core.trac.wordpress.org/ticket/33975>
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