WordPress MU

I'm using the Multi-Site Manager plugin and I want to let my users sign up for blogs at http://daytonastate.org/wp-signup.php or http://thripp.com/wp-signup.php for the respective domains. The only problem is that wp-signup.php or wpmu-functions.php always sets the site_id column in the wp_blogs table to 1, even though daytonastate.org should have the site_id of 4. I've tested, and you can't even log on to an account until the site_id is changed manually.

Is there any way to make this set itself automatically when a blog is created? All the other topics I've found here just suggest doing it manually in phpMyAdmin, but that doesn't work for my case (open registration).

I solved this through a kludge: I added two lines below ” $result = wpmu_activate_signup($key);” in wpmu-activate.php:

global $wpdb;
$wpdb->query(”UPDATE $wpdb->blogs SET site_id = ‘4′ WHERE domain LIKE ‘%.daytonastate.org’”);

You can use that if you're facing my dilemma. Just change "daytonastate.org" to your add-on domain and "4" to its site_id.

My new problem, a more minor one, is that if say, bob.thripp.com is taken, no one can register bob.daytonastate.org, and vice-versa. If you have a solution for this, even if it's a hack, please post.

domain_exists in wp-includes/wpmu-functions.php is what checks if the blog is taken.

Thanks, MrBrian. I saw that before, but I didn't notice that domain_exists is a part of create_empty_blog, which hard-codes the site ID to 1. domain_exists is then called by wpmu_create_blog which does the same, which is called by validate_another_blog_signup in wp-signup.php, which is used to create a new blog for a user who is already logged in. BUT, blog creation works fine when logged in; I can create richardxthripp.daytonastate.org even though richardxthripp.thripp.com exists, which is how it should be.

Apparently the three instances of "$site_id = 1" in wpmu-functions.php do not matter at all. The problem is somewhere else. I'm still looking.

A quick grep of r1432 shows that while there is a function create_empty_blog in wpmu-functions.php, it's not called anywhere in the source.

wpmu_create_blog on the other hand, is called in:

./wp-admin/wpmu-edit.php (with the correct call to current_site->id)
./wp-includes/wpmu-functions.php (without passing the site_id)
./wp-signup.php (with the current wpdb->site_id)

The call which is not passing the site id at all is part of the wpmu_activate_signup function, on (or around) line 1124 or so (in r1432).

To help the cause, and should clear it up:
http://trac.mu.wordpress.org/ticket/726

This doesn't let new users register same-named blogs on different domains, but it fixes the important problem. Thanks, lunabyte!

You're right. That doesn't let them pick. But if they arrive on site_id 2, that's what's going into the database. ;)

richardxthripp,

Did you ever find a solution for this? I am running up against the same issues, and would love to have the ability to allow users to sign-up for subdoamins on domain 2 that are already take on domain 1.