[wp-trac] [WordPress Trac] #39917: AutoSave is not disabling in spite of settings added in wp-config.php

[WordPress Trac]

#39917: AutoSave is not disabling in spite of settings added in wp-config.php
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 Reporter:  subrataemfluence   |       Owner:
     Type:  defect (bug)       |      Status:  new
 Priority:  normal             |   Milestone:  Awaiting Review
Component:  Autosave           |     Version:  4.7.2
 Severity:  normal             |  Resolution:
 Keywords:  reporter-feedback  |     Focuses:  administration
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Comment (by azaozz):

 Replying to [comment:5 subrataemfluence]:

 It's a bit more complex :)

 There are two autosaves:
 - to the server: creates a revision post or updates the post if it is a
 draft by the same author.
 - in the browser's sessionStorage: this is for "disaster recovery" and is
 accessible only if the browser crashes or the post cannot be saved,
 network is down, etc.

 The user can only control the interval for the aurosave to the server.
 This was intended for reducing the server requests while the Edit Post
 screen is loaded (some very cheap hosting accounts had issues with too
 many requests). However now it's mostly a left-over as we use Heartbeat
 for autosaves.

 > Setting in `wp-config.php` does have some effect in preventing auto-
 drafting (auto-saving) partially. If I keep that on, only title and
 content gets auto saved and only once

 Not quite. Auto-drafts cannot be disabled. As dd32 explained above they
 are user to "reserve" a row/post_ID in the posts table for the upcoming
 post when the user loads the Add New Post screen (and in few other cases).
 If no post is saved they are deleted a week later.

 > Without the setting, auto save also works in edit mode but not when the
 setting is added.

 Right. Autosave to the server is triggered at least once after loading the
 Add New Post screen. This is not affected by the interval from
 `AUTOSAVE_INTERVAL`.

 Can I ask why would you want to disable autosaves? They are there to
 safeguard the content typed by the users and are "basic functionality"
 that is always needed.

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Ticket URL: <https://core.trac.wordpress.org/ticket/39917#comment:6>
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