[wp-trac] [WordPress Trac] #49628: Add is_post_type_viewable filter

[WordPress Trac]

#49628: Add is_post_type_viewable filter
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 Reporter:  powerbuoy          |      Owner:  (none)
     Type:  feature request    |     Status:  new
 Priority:  normal             |  Milestone:  Awaiting Review
Component:  Posts, Post Types  |    Version:  5.3.2
 Severity:  normal             |   Keywords:
  Focuses:  administration     |
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 It would be great if we could hook into is_post_type_viewable() and
 override the check.

 We've created a new config for post types; `has_single`, which works very
 much like `has_archive` only it disables single pages for a post-type
 (useful for post-types such as `office` or `employee` which usually in our
 cases only have archive pages).

 However, even though the post-type shows a 404 on single (using
 `template_redirect`), inside the admin the "View"-links and "Permalink"
 settings still show up. It seems the easiest way to hide everything
 related to single pages is to simply `return false` from
 `is_post_type_viewable()`.

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Ticket URL: <https://core.trac.wordpress.org/ticket/49628>
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