Ticket #2266: RequiredIfOtherFieldsNotGiven.diff

django/core/validators.py

@@ -267 +267 @@
         if not all_data.get(self.other, False) and not field_data:
             raise ValidationError, self.error_message
 
+class RequiredIfOtherFieldsNotGiven(object):
+    def __init__(self, other_field_names, error_message=gettext_lazy("Please enter something for at least one field.")):
+        self.other, self.error_message = other_field_names, error_message
+        self.always_test = True
+
+    def __call__(self, field_data, all_data):
+        one_field_given = False
+        for field in self.other:
+            if all_data.get(field, False):
+                one_field_given = True
+                break
+        if not one_field_given:
+            raise ValidationError, self.error_message
+
 class RequiredIfOtherFieldsGiven(object):
     def __init__(self, other_field_names, error_message=gettext_lazy("Please enter both fields or leave them both empty.")):
         self.other, self.error_message = other_field_names, error_message