[wp-trac] [WordPress Trac] #50648: Different behavior for default category term with editors

[WordPress Trac]

#50648: Different behavior for default category term with editors
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 Reporter:  enrico.sorcinelli  |       Owner:  (none)
     Type:  defect (bug)       |      Status:  new
 Priority:  normal             |   Milestone:  Awaiting Review
Component:  Editor             |     Version:  trunk
 Severity:  normal             |  Resolution:
 Keywords:                     |     Focuses:
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Comment (by enrico.sorcinelli):

 All administration post category term stuffs relies on default category
 settings: by creating or updating post without category terms and deleting
 a category terms as well, the default post category will be auto-added .
 Block editor change this behavior by allowing to set empty terms
 disregarding the **Settings > Writing > Default post category** user
 choice.
 This creates an inconsistence across the different editors.

 This simple patch aims to fix that.
 I added a `--None--` option with a `0` value in order to explicitly allow
 posts with empty terms:

 [[Image(https://gist.githubusercontent.com/enrico-
 sorcinelli/627c125e3f45105b9a5f59cc917eddb5/raw/feea7256209d484cad1d3db2d56d18f8cfe20645
 /settings-writing.png)]]

 The REST posts controller adds (or not) the default category term
 according to the settings above.

 This way, all editors (quick/classic/block) can empty category terms, as
 well custom taxonomies terms.

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Ticket URL: <https://core.trac.wordpress.org/ticket/50648#comment:4>
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