1 files changed, 19 insertions, 0 deletions
diff --git a/lib/api/validations/validators/array_none_any.rb b/lib/api/validations/validators/array_none_any.rb
new file mode 100644
index 00000000000..7efb8e6ccee
--- /dev/null
+++ b/lib/api/validations/validators/array_none_any.rb
@@ -0,0 +1,19 @@
+# frozen_string_literal: true
+
+module API
+  module Validations
+    module Validators
+      class ArrayNoneAny < Grape::Validations::Base
+        def validate_param!(attr_name, params)
+          value = params[attr_name]
+
+          return if value.is_a?(Array) ||
+              [IssuableFinder::Params::FILTER_NONE, IssuableFinder::Params::FILTER_ANY].include?(value.to_s.downcase)
+
+          raise Grape::Exceptions::Validation, params: [@scope.full_name(attr_name)],
+                                               message: "should be an array, 'None' or 'Any'"
+        end
+      end
+    end
+  end
+end