Attribute Text Custom Validation

[suntower]

Sorry for the possibly noob question. But I sure wish the 'Search' here worked a bit better. I'm sure it's been asked a bunch of times!

I have added several text 'attributes' that I need to be validated. The validation is not only -required- but the fields are 17 chars and MUST be completely filled and MUST conform to a pattern of alpha and numeric (one is a VIN for example).

How does one enforce rules for such validation?

TIA,

---JC

PS: I'm cool with JS or PHP. I just wanna know where to start looking... or where in the Admin I can go to do it and save myself some work!

[lat9]

You could create the file /includes/extra_cart_actions/validate.php. Note that this file can be named anything you want; it just needs to be in this directory.

In this file, you could check for the cart-related action (add-to-cart is the only one you need to care about, since your products have attributes). If attributes are included in the POST data (the 'id' values), then check for the VIN-related option name/value pair (you can see their values in your admin's Attribute Controller). If an error exists with the data, write a message to the header (so it will be seen on all pages) and then redirect to the return-page for the cart-related actions.

Best thing: No core file overrides.

<?php
global $messageStack;

if ($_GET['action'] == 'add_product') {
 
  /*---- Add a product to cart ----
  */
    if (isset($_POST['products_id']) && $_POST['cart_quantity'] > 0) {
      if (isset($_POST['id'])) {
        foreach($_POST['id'] as $option => $value) {
          if ($option == VIN_OPTION_NUMBER) {
            <do some checking on the vin entered>
             if( $vin_error) {
               $messageStack->add_session('header', ERROR_VIN_ERROR);
               zen_redirect(zen_href_link($goto, zen_get_all_get_params($parameters)));
             }
           }
        }
      }
    }      
}

[suntower]

Cool. I think that's what I needed to get the ball rolling.



---JC

You could create the file /includes/extra_cart_actions/validate.php. Note that this file can be named anything you want; it just needs to be in this directory.

In this file, you could check for the cart-related action (add-to-cart is the only one you need to care about, since your products have attributes). If attributes are included in the POST data (the 'id' values), then check for the VIN-related option name/value pair (you can see their values in your admin's Attribute Controller). If an error exists with the data, write a message to the header (so it will be seen on all pages) and then redirect to the return-page for the cart-related actions.

Best thing: No core file overrides.

<?php
global $messageStack;

if ($_GET['action'] == 'add_product') {
 
  /*---- Add a product to cart ----
  */
    if (isset($_POST['products_id']) && $_POST['cart_quantity'] > 0) {
      if (isset($_POST['id'])) {
        foreach($_POST['id'] as $option => $value) {
          if ($option == VIN_OPTION_NUMBER) {
            <do some checking on the vin entered>
             if( $vin_error) {
               $messageStack->add_session('header', ERROR_VIN_ERROR);
               zen_redirect(zen_href_link($goto, zen_get_all_get_params($parameters)));
             }
           }
        }
      }
    }      
}

[lat9]

You can also take a peek at /includes/main_cart_actions.php to get a feel for the attribute-handling.