[wp-trac] [WordPress Trac] #64123: Patterns: add the pattern name to pattern blocks when they are converted

[WordPress Trac]

#64123: Patterns: add the pattern name to pattern blocks when they are converted
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 Reporter:  ramonopoly   |      Owner:  (none)
     Type:  enhancement  |     Status:  new
 Priority:  normal       |  Milestone:  7.0
Component:  Editor       |    Version:
 Severity:  normal       |   Keywords:  has-patch has-unit-tests
  Focuses:               |
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 The editor has used metadata in pattern attributes since
 https://github.com/WordPress/gutenberg/pull/59251 to organize and sort
 patterns.

 Patterns metadata allows the editor to distinguish patterns from other
 block groups, and from other patterns.

 An initiative to introduce a special "simple" content only mode to
 patterns depends on this feature. For user-created and inserted patterns,
 the editor will render the block tree differently, and present specific
 controls and tools to the user.

 See: See: https://github.com/WordPress/gutenberg/issues/71517

 The feature is slated for WordPress 7.0.

 For this feature to work however, the block editor needs to know that it
 is dealing with a pattern.

 For patterns created in the editor, and for patterns returned by the
 patterns REST API endpoint, the status of "pattern" can be inferred.

 However, many templates contain patterns, for example TT5's 404 template

 https://github.com/WordPress/wordpress-develop/blob/trunk/src/wp-
 content/themes/twentytwentyfive/templates/404.html#L5

 The block editor ''could'' parse templates on the frontend to identify
 patterns upon insertion, but this would have an impact on performance,
 especially for large patterns.

 Rather, let's leverage the existing patterns parser
 `resolve_pattern_blocks` to add this metadata to theme patterns before
 they're sent as a response from the REST APIs.

 See: https://github.com/WordPress/wordpress-develop/blob/trunk/src/wp-
 includes/blocks.php#L1843

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Ticket URL: <https://core.trac.wordpress.org/ticket/64123>
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