Set custom field with numbers

Hello.
You can make customization for such validation in the ../{Booking Calendar Folder}/js/client.js file.

You need to find this code:

/*if ( element.name == ('phone'+bk_type) ) {
                // we validate a phone number of 10 digits with no comma, no spaces, no punctuation and there will be no + sign in front the number - See more at: https://www.w3resource.com/javascript/form/phone-no-validation.php#sthash.U9FHwcdW.dpuf
                var reg =  /^\d{10}$/;
                var message_verif_phone = "Please enter correctly phone number";
                if ( inp_value != '' )
                    if(reg.test(inp_value) == false) {showErrorMessage( element , message_verif_phone);return;}
            }*/

and replace it to this code:

if ( element.name == ('phone'+bk_type) ) {
                // we validate a phone number of 10 digits with no comma, no spaces, no punctuation and there will be no + sign in front the number - See more at: https://www.w3resource.com/javascript/form/phone-no-validation.php#sthash.U9FHwcdW.dpuf
                var reg =  /^\d{13}$/;
                var message_verif_phone = "Sorry, only residents may book this resource.";
                if ( inp_value != '' )
                    if(reg.test(inp_value) == false) {showErrorMessage( element , message_verif_phone);return;}
            }

Please note, above code make checking for entering in phone field. But you can change the name of the form filed in that code.

Also its only check about the ability to enter 13 digit number, no any other checking. So if you need some other checking, please add it there.

Kind Regards.

Thank you so very much! Does it matter that the number data I’m asking for is a barcode and not a phone number?

This is a complete long shot, but do you think I can add something for Luhn validation checking? My colleague would be in charge of that piece, but I’d want to make sure his code refers to this (‘phone’+bk_type) field. I’m guessing his code would live somewhere else, but inside this file, a line would say “check this code against this outside file’s Luhn validation.”

If you are using the Booking Calendar Free version, then this code relative to the “Field #3:” from the Booking > Settings > Fields page.

If you are using some paid version of Booking Calendar, then this code relative to this form shortcode:
[text phone]
If in the paid version of Booking Calendar, you will use some other shortcode for the text field.
For example this:
[text luhn ""]
Then you need to use this code:

if ( element.name == ('luhn'+bk_type) ) {
                // we validate a phone number of 13 digits with no comma, no spaces, no punctuation and there will be no + sign in front the number - See more at: https://www.w3resource.com/javascript/form/phone-no-validation.php#sthash.U9FHwcdW.dpuf
                var reg =  /^\d{13}$/;
                var message_verif_phone = "Sorry, only residents may book this resource.";
                if ( inp_value != '' )
                    if(reg.test(inp_value) == false) {showErrorMessage( element , message_verif_phone);return;}
            }

Hope its clear now.
Kind Regards.

You’ve gone above and beyond. I appreciate your work so much. And now I feel very guilty because I found out that we actually have multiples of a single resource type, so this point we’re priced out of this plugin.

Thank you so much again.