Better implementation of #6016 passing value to callback

RELEASE-NOTES.md

@@ -10,7 +10,7 @@
 
 **Enhancements**
 - **Search** - Adds disabled variation **Thanks @prudho** #6225
-- **Form Validation** - Form prompt can now be returned by a function **Thanks @xDaizu** #6016 #3864
+- **Form Validation** - Form can now return their validation prompt dynamically based on their current value. **Thanks @xDaizu** #6016 #3864
 
 **Bugs**
 - **Dropdown** - Fixed `onChange` missing `text` from callback when dropdown is set to `action: 'select'` #4183 #4510

src/definitions/behaviors/form.js

@@ -435,18 +435,16 @@ $.fn.form = function(parameters) {
             var
               ruleName      = module.get.ruleName(rule),
               ancillary     = module.get.ancillaryValue(rule),
+              $field        = module.get.field(field.identifier),
+              value         = $field.val(),
               prompt        = $.isFunction(rule.prompt)
-                ? rule.prompt()
+                ? rule.prompt(value)
                 : rule.prompt || settings.prompt[ruleName] || settings.text.unspecifiedRule,
               requiresValue = (prompt.search('{value}') !== -1),
               requiresName  = (prompt.search('{name}') !== -1),
               $label,
-              $field,
               name
             ;
-            if(requiresName || requiresValue) {
-              $field = module.get.field(field.identifier);
-            }
             if(requiresValue) {
               prompt = prompt.replace('{value}', $field.val());
             }