This took me a while to figure out, it’s pretty silly.
Reason: do_action(‘register_form’) only shows the form. That’s it. No <form> tags, no <input type=’submit’ />
Solution:
<form method="post" action="<?php echo site_url('wp-login.php?action=register', 'login_post') ?>" class="wp-user-form">
<?php do_action('register_form'); ?>
<input type="submit" name="user-submit" value="<?php _e('Sign up!'); ?>" class="user-submit" tabindex="103" />
<?php $register = $_GET['register']; if($register == true) { echo '<p>Check your email for the password!</p>'; } ?>
<input type="hidden" name="redirect_to" value="<?php echo $_SERVER['REQUEST_URI']; ?>?register=true" />
<input type="hidden" name="user-cookie" value="1" />
</form>
This is pretty buggy stuff, the register_form is a useless function man. You’re better off building your own damn register page.
It didn’t even give me the email field. I’ve got the two working nicely together, here’s the finished code that worked for me, seen at actualrewards.com
<form method="post" action="<?php echo site_url('wp-login.php?action=register', 'login_post') ?>" class="wp-user-form">
<input id="user_email" class="input" type="text" value="" name="user_email">
<?php do_action('register_form'); ?>
<input type="submit" name="user-submit" value="<?php _e('Sign up!'); ?>" class="user-submit" tabindex="103" />
<?php $register = $_GET['register']; if($register == true) { echo '<p>Check your email for the password!</p>'; } ?>
<input type="hidden" name="redirect_to" value="<?php echo $_SERVER['REQUEST_URI']; ?>?register=true" />
<input type="hidden" name="user-cookie" value="1" />
</form>
