[wp-trac] [WordPress Trac] #58827: Publish the Patterns page in the Site Editor to all non-block themes

[WordPress Trac]

#58827: Publish the Patterns page in the Site Editor to all non-block themes
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 Reporter:  wildworks                            |       Owner:  (none)
     Type:  defect (bug)                         |      Status:  new
 Priority:  normal                               |   Milestone:  6.5
Component:  Editor                               |     Version:
 Severity:  normal                               |  Resolution:
 Keywords:  has-patch has-testing-info needs-    |     Focuses:
  testing                                        |
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Comment (by rajinsharwar):

 Hi @wildworks, I tested your patch against the trunk as of today. LGTM on
 my tests, but there is one thing that I found.

 So, suppose I am using a theme that doesn't have the "block-template-
 parts", for example, Astra. I activated that theme, and in the
 functions.php, I added: add_theme_support( 'block-template-parts' );

 Then, the Template parts menu option was visible. I clicked on that, and
 it took many seconds to load, and after that the die message: "The theme
 you are currently using is not compatible with the Site Editor." was
 shown. After I returned back, I found that there was no more the "template
 Parts" option on the menu and the code of "add_theme_support( 'block-
 template-parts' );" was removed from my theme's functions.php.

 I am not really sure if this behavior is good, as modifying the theme
 files without notice isn't something the core should do.

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Ticket URL: <https://core.trac.wordpress.org/ticket/58827#comment:12>
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