function post($message, $attachment = null)
{
// Check the ACL entries. Leaving out parameter 3 will cause the ACL
// class to look up and open the current user.
if (!acl::getAccess($this, 'post')) {
// User doesn't have permission to post at all
throw new AccessException("No access to post");
}
// Check ACL entries for posting attachments.
if ($attachment && !acl::getAccess($this, 'attach')) {
// User doesn't have permission to attach stuff
throw new AccessException("No access to attach");
}
// All is well. Post the data
}
