Add FormAlchemy-compatible validators for email address, phone number

tailbone/forms/validators.py

@@ -21,14 +21,16 @@
 #
 ################################################################################
 """
-Custom FormEncode Validators
+Custom Form Validators
 """
 
 from __future__ import unicode_literals, absolute_import
 
 from rattail.db import model
+from rattail.db.util import validate_email_address, validate_phone_number
 
 import formencode as fe
+import formalchemy as fa
 
 from tailbone.db import Session
 
@@ -102,3 +104,27 @@ class ValidUser(ModelValidator):
     Validator for user field.
     """
     model_class = model.User
+
+
+def valid_email_address(value, field=None):
+    """
+    FormAlchemy-compatible validation function, which leverages FormEncode
+    under the hood.
+    """
+    if value:
+        try:
+            return validate_email_address(value, error=True)
+        except Exception as error:
+            raise fa.ValidationError(unicode(error))
+
+
+def valid_phone_number(value, field=None):
+    """
+    FormAlchemy-compatible validation function, which leverages FormEncode
+    under the hood.
+    """
+    if value:
+        try:
+            return validate_phone_number(value, error=True)
+        except Exception as error:
+            raise fa.ValidationError(unicode(error))