[wp-trac] [WordPress Trac] #42916: Terms for taxonomy with show_in_quick_edit = false still load in inline data

[WordPress Trac]

#42916: Terms for taxonomy with show_in_quick_edit = false still load in inline
data
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 Reporter:  jazbek          |      Owner:
     Type:  defect (bug)    |     Status:  new
 Priority:  normal          |  Milestone:  Awaiting Review
Component:  Administration  |    Version:  4.9.1
 Severity:  normal          |   Keywords:
  Focuses:  performance     |
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 The show_in_quick_edit property was introduced for taxonomies in 4.2 with
 changeset:

 https://core.trac.wordpress.org/changeset/31307

 This changeset removed the taxonomy from the inline edit form, but the
 terms for the taxonomy are still being populated in the data for each row
 via the `get_inline_data()` function, which only respects
 `$taxonomy->show_ui`.

 One reason people may want to remove a taxonomy from quick edit is for
 performance reasons, when the number of terms fore each post are huge.
 However, the terms are still being loaded, and the page can take a huge
 performance hit.

 For example, I have a custom post type where each one is assigned
 thousands of zip codes via a custom taxonomy. I set show_in_quick_edit to
 false on the taxonomy, but the post listing was still loading very slow. I
 looked at the source code, and saw thousands of zip codes being rendered
 in a hidden div on each row.

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Ticket URL: <https://core.trac.wordpress.org/ticket/42916>
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