1 files changed, 13 insertions, 0 deletions
diff --git a/lib/api/helpers/custom_validators.rb b/lib/api/helpers/custom_validators.rb
index 23b1cd1ad45..e4af75f1971 100644
--- a/lib/api/helpers/custom_validators.rb
+++ b/lib/api/helpers/custom_validators.rb
@@ -10,8 +10,21 @@ module API
           raise Grape::Exceptions::Validation, params: [@scope.full_name(attr_name)], message: message(:absence)
         end
       end
+
+      class IntegerNoneAny < Grape::Validations::Base
+        def validate_param!(attr_name, params)
+          value = params[attr_name]
+
+          return if value.is_a?(Integer) ||
+              [IssuableFinder::FILTER_NONE, IssuableFinder::FILTER_ANY].include?(value)
+
+          raise Grape::Exceptions::Validation, params: [@scope.full_name(attr_name)],
+                                               message: "should be an integer, 'None' or 'Any'"
+        end
+      end
     end
   end
 end
 
 Grape::Validations.register_validator(:absence, ::API::Helpers::CustomValidators::Absence)
+Grape::Validations.register_validator(:integer_none_any, ::API::Helpers::CustomValidators::IntegerNoneAny)