class GraphQL::Schema::Enum

def coerce_result(value, ctx)
  warden = ctx.warden
  all_values = warden ? warden.enum_values(self) : values.each_value
  enum_value = all_values.find { |val| val.value == value }
  if enum_value
    enum_value.graphql_name
  else
    raise self::UnresolvedValueError.new(enum: self, value: value, context: ctx)
  end
end