[wp-trac] [WordPress Trac] #41101: Add filter to prevent the addition of a user to a blog

[WordPress Trac]

#41101: Add filter to prevent the addition of a user to a blog
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 Reporter:  jmdodd                           |       Owner:  flixos90
     Type:  enhancement                      |      Status:  reopened
 Priority:  normal                           |   Milestone:  4.9
Component:  Users                            |     Version:  trunk
 Severity:  normal                           |  Resolution:
 Keywords:  has-patch has-unit-tests commit  |     Focuses:  multisite
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Changes (by flixos90):

 * status:  closed => reopened
 * resolution:  fixed =>


Comment:

 Per @johnjamesjacoby (https://twitter.com/JJJ/status/902722123898253314),
 there is an action hook wrapped in a `! is_wp_error()` check, although it
 also accepts a `WP_Error`.

 How do we solve this? Does it make more sense removing the clause, or only
 running the hook when there isn't a `WP_Error`. The first is more
 backward-compatible, the latter makes more sense for what the hook name
 indicates IMO (if there's an error, the user was _not_ added to the site).

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Ticket URL: <https://core.trac.wordpress.org/ticket/41101#comment:13>
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