isUnique case-sensitivity off ??

Hey guys,
Need help with this...
i have validation rules defined as thus:
var $validate = array(
'city' => array(
'notempty'=>array(
'rule' => 'alphaNumeric',
'message' => 'Error: Empty City Field',
'allowEmpty' => false
),
'unique'=>array(
'rule' => 'isUnique',
'message' => 'Error: City Already Exists',
)
)
);

they work well, but i noticed that the isUnique rule is case-sensitive
ie i can have 2 entries like so:
"Newyork" and alse "newyork". I was wondering if there is any way to
turn off the case-sensitivity
--~--~---------~--~----~------------~-------~--~----~
You received this message because you are subscribed to the Google Groups "CakePHP" group.
To post to this group, send email to cake-php@googlegroups.com
To unsubscribe from this group, send email to cake-php+unsubscribe@googlegroups.com
For more options, visit this group at http://groups.google.com/group/cake-php?hl=en
-~----------~----~----~----~------~----~------~--~---