Cart library: how to extend library class regex validation without messing with the core?

Cart library: how to extend library class regex validation without messing with the core? - Printable Version

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Cart library: how to extend library class regex validation without messing with the core? - El Forum - 10-12-2009

[eluser]moonbeetle[/eluser]
Cart.php, line 31

Code:
var $product_name_rules    = '\.\:\-_ a-z0-9'; // alpha-numeric, dashes, underscores, colons or periods

While the pattern above will be valid in 99% of the cases I need to add a few allowed characters like a ? and a !
(building a shopping cart for book titles where some have a question or exclamation mark at the end)

Of course I can add those extra characters to the array. But this would mean that when I upgrade to a newer version of CI, I must keep track of such changes. Is there a better way in this case?

Cart library: how to extend library class regex validation without messing with the core? - El Forum - 10-12-2009

[eluser]Pascal Kriete[/eluser]
It's a public variable - so you can change it to anything you want.

Code:
$this->load->library('cart');

$this->cart->product_name_rules = 'ponies';

Or you could [url=http://ellislab.com/codeigniter/user-guide/general/core_classes.html]extend the library[/code] and just set it in there, which will then be in effect globally.