Implement prompt as a function #6016

RELEASE-NOTES.md

@@ -10,6 +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
 
 **Bugs**
 - **Dropdown** - Fixed `onChange` missing `text` from callback when dropdown is set to `action: 'select'` #4183 #4510

src/definitions/behaviors/form.js

@@ -435,7 +435,9 @@ $.fn.form = function(parameters) {
             var
               ruleName      = module.get.ruleName(rule),
               ancillary     = module.get.ancillaryValue(rule),
-              prompt        = rule.prompt || settings.prompt[ruleName] || settings.text.unspecifiedRule,
+              prompt        = $.isFunction(rule.prompt)
+                ? rule.prompt()
+                : rule.prompt || settings.prompt[ruleName] || settings.text.unspecifiedRule,
               requiresValue = (prompt.search('{value}') !== -1),
               requiresName  = (prompt.search('{name}') !== -1),
               $label,