Use Array.wrap

Author: marshall-lee

lib/grape.rb

@@ -11,6 +11,7 @@
 require 'active_support/core_ext/hash/indifferent_access'
 require 'active_support/core_ext/object/blank'
 require 'active_support/core_ext/array/extract_options'
+require 'active_support/core_ext/array/wrap'
 require 'active_support/core_ext/hash/deep_merge'
 require 'active_support/core_ext/hash/except'
 require 'active_support/dependencies/autoload'

lib/grape/validations/attributes_iterator.rb

@@ -5,8 +5,7 @@ class AttributesIterator
 
       def initialize(validator, scope, params)
         @attrs = validator.attrs
-        @params = scope.params(params)
-        @params = (@params.is_a?(Array) ? @params : [@params])
+        @params = Array.wrap(scope.params(params))
       end
 
       def each