[wp-trac] [WordPress Trac] #64804: REST API: Add finalize endpoint to `WP_REST_Attachments_Controller` for client-side media processing

[WordPress Trac]

#64804: REST API: Add finalize endpoint to `WP_REST_Attachments_Controller` for
client-side media processing
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 Reporter:  adamsilverstein           |       Owner:  (none)
     Type:  defect (bug)              |      Status:  new
 Priority:  normal                    |   Milestone:  7.0
Component:  REST API                  |     Version:  trunk
 Severity:  normal                    |  Resolution:
 Keywords:  has-patch has-unit-tests  |     Focuses:
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Comment (by westonruter):

 @adamsilverstein Would it not make sense to just call
 `wp_generate_attachment_metadata()` after each image size is sideloaded?
 That way the metadata will be sure to be created even when no `finalize`
 request is made (e.g. the client goes offline). Or is the concern that re-
 generating the metadata each time would cause relevant plugins to do
 redundant work?

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Ticket URL: <https://core.trac.wordpress.org/ticket/64804#comment:3>
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