Network Admin + Ajax requests

[dd32]

Currently there is no Network admin based ajax handler, forcing plugins which exist solely within the Network Admin to either use wp-admin/admin-ajax.php or using the load-{$page_hook} hook to perform any actions.

This is primarily a problem when the plugin only includes code on a conditional such as is_network_admin(), which would be false for a /wp-admin/admin-ajax.php request, as a result, only the load-{$page_hook} option above is viable for those.
As a work around, plugins can include code on is_network_admin() || DOING_AJAX to allow the usage of admin-ajax.php.

Of course, the User Admin also suffers the same issue.

I didn't see any previous tickets, and kind of want to say the existing 'workaround' is appropriate, but recording it here so we can at least close it as wontfix if appropriate.

I don't think the workaround is appropriate; it's a hack.

We should have a dedicated /wp-admin/network/admin-ajax.php file, which contains all the network-specific ajax handlers.