Changed form_open() to compare $action against base_url()
Checking for strpos($action, $CI->config->site_url()) === FALSE causes
CSRF token to not be added in form_open() output. When site_url()'s
first parameter ($uri) is empty, site_url's return value is the base
URL plus the $CI->config->item('index_page') value. form_open() and
CodeIgniter's URI routing do not require index.php to be in the URL, so
any call to form_open() in which the $action parameter does not have
index.php will always return false for the strpos() call.
diff --git a/user_guide/changelog.html b/user_guide/changelog.html
index a20f279..ae66add 100644
--- a/user_guide/changelog.html
+++ b/user_guide/changelog.html
@@ -71,6 +71,7 @@
<h3>Bug fixes for 2.1.1</h3>
<ul>
<li>Fixed a bug (#697) - A wrong array key was used in the Upload library to check for mime-types.</li>
+ <li>Fixed a bug - form_open() compared $action against site_url() instead of base_url()</li>
</ul>