[wp-trac] [WordPress Trac] #43316: REST API: Support autosaves

[WordPress Trac]

#43316: REST API: Support autosaves
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 Reporter:  kraftbj                              |       Owner:  rmccue
     Type:  enhancement                          |      Status:  assigned
 Priority:  normal                               |   Milestone:  5.0
Component:  REST API                             |     Version:
 Severity:  normal                               |  Resolution:
 Keywords:  has-patch needs-testing needs-unit-  |     Focuses:  rest-api
  tests                                          |
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Comment (by azaozz):

 Replying to [comment:69 rmccue]:
 > > > Hm, `wp_save_post_revision()` doesn't wipe autosave revisions. It
 has some logic to keep a max number of revisions if they are limited by a
 plugin. The default is `-1` (unlimited). Also note that this logic
 specifically bypasses (keeps) autosave revisions, even when they are over
 the max.
 > >
 > > Ah, you're right, I'd misread the code there.
 >
 > The code that ''actually'' does this is in `edit-form-advanced.php` when
 the editor checks for autosaves. I guess this adds an extra step to the
 process too:
 >
 > * User opens the editor
 >   * Editor checks current autosaves: `GET
 /wp/v2/posts/{id}/revisions?revision_type=autosave`
 >     * If any autosaves exist newer than the last save, display restore
 button
 >     * If any other autosaves exist, delete them
 >   * Editor creates a new autosave: `POST
 /wp/v2/posts/{id}/revisions?revision_type=autosave`

 Hm, no. The code in `edit-form-advanced.php` repeats the same logic as in
 `wp_create_post_autosave()`
 https://core.trac.wordpress.org/browser/tags/4.9.5/src/wp-
 admin/includes/post.php#L1687. It deletes the latest autosave only when
 the autosaved "fields" match the latest post. It also doesn't look for
 previous autosave revisions by other authors.

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Ticket URL: <https://core.trac.wordpress.org/ticket/43316#comment:72>
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