[wp-trac] [WordPress Trac] #21143: Add a hook for when no blog is found (in addition to NOBLOGREDIRECT)

[WordPress Trac]

#21143: Add a hook for when no blog is found (in addition to NOBLOGREDIRECT)
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 Reporter:  jamescollins            |       Owner:
     Type:  enhancement             |      Status:  new
 Priority:  normal                  |   Milestone:  3.9
Component:  Bootstrap/Load          |     Version:
 Severity:  normal                  |  Resolution:
 Keywords:  dev-feedback has-patch  |     Focuses:  multisite
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Comment (by jeremyfelt):

 Replying to [comment:17 jeremyfelt]:
 > I wonder how necessary that signup redirect is. If that was taken out or
 checked separately, the redirect decision would become cleaner.

 I attempted to clean this up a bit in
 [https://core.trac.wordpress.org/attachment/ticket/21143/21143.3.diff
 21143.3.diff].

 1. The `network_not_found` action fires before `ms_not_installed()` if a
 network cannot be found.
 1. If we find a network but no site and `WP_INSTALLING` is set, set a blog
 ID of 1 to continue loading WordPress.
 1. If we're not installing and we haven't found anything, fire
 `site_not_found` before...
     a. If it's a subdomain install, redirect to one of `NOBLOGREDIRECT` if
 defined, the network's signup URL if registration is set to anything other
 than none, or the main network domain/path.
     b. If it's a subdirectory install and the requested domain doesn't
 match the network's domain, redirect to the network's domain and path.
     c. Bail completely with `ms_not_installed()`.

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Ticket URL: <https://core.trac.wordpress.org/ticket/21143#comment:18>
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