How to restrict max length of characters, on a Catalog Form field, based on a dependent field ?

[AbdurRahmanSnow]

Good evening
On a Catalog form, based on Country is Thailand, then it should allow the below 3 Address line Fields to only take 70 characters/digit length.
How can I do this? Please guide.

[Dr Atul G- LNG]

I am not an expert in coding, but something

If Country = xx

Then 

Value some things.

[Harrymate]

You can enforce this character limit restriction dynamically using Client Scripts:

using Client Scripts >>  Go to the Catalog Client Scripts >> Click New 

in there Type should be onChange and pass the Variable Name country (Make sure this matches your Country field variable name)

 // Check if Country is Thailand
    if (newValue === "Thailand") {
        // Define Address Field values
        var addressValues = ["address_line_1", "address_line_2", "address_line_3"];

        addressValues.forEach(function(field) {
            var addressField = g_form.getControl(field);
            if (addressField) {
                // Set Maximum Length to 70
                addressField.maxLength = 70;
                g_form.showFieldMsg(field, "Maximum 70 characters allowed for Thailand.", "info");
            }
        });
    } else {
        // Remove field restriction if not Thailand
        var addressValues = ["address_line_1", "address_line_2", "address_line_3"];
        addressValues.forEach(function(field) {
            var addressField = g_form.getControl(field);
            if (addressField) {
                addressField.removeAttribute("maxLength");
                g_form.clearMessages();
            }
        });
    }

[AbdurRahmanSnow]

Thanks a lot Harry. I just modified and got the code as below:

Correct Answer

function onSubmit() {

   //Type appropriate comment here, and begin script below

   var country = g_form.getDisplayValue('country');

   if (country == 'THAILAND') {

      var add1 = g_form.getValue('Address1');

      var add2 = g_form.getValue('Address2');

      var add3 = g_form.getValue('Address3');

      //alert('Address lengths: ' + add1.length + ', ' + add2.length + ', ' + add3.length);

      if ((add1.length > 70) || (add2.length > 70) || (add3.length > 70)) {

        alert('The maximum character limit for addresses in Thailand is 70.!');

        return false;

      }

   }  

   return true;

}

[AbdurRahmanSnow · Accepted solution]

Correct Answer

function onSubmit() {

   //Type appropriate comment here, and begin script below

   var country = g_form.getDisplayValue('country');

   if (country == 'THAILAND') {

      var add1 = g_form.getValue('Address1');

      var add2 = g_form.getValue('Address2');

      var add3 = g_form.getValue('Address3');

      //alert('Address lengths: ' + add1.length + ', ' + add2.length + ', ' + add3.length);

      if ((add1.length > 70) || (add2.length > 70) || (add3.length > 70)) {

        alert('The maximum character limit for addresses in Thailand is 70.!');

        return false;

      }

   }  

   return true;

}