相关疑难解决方法(0)

我认为以下两个是等价的:

named_scope :admin, lambda { |company_id| {:conditions => ['company_id = ?', company_id]} }

named_scope :admin, lambda do |company_id| 
  {:conditions => ['company_id = ?', company_id]}
end

但Ruby抱怨道:

ArgumentError: tried to create Proc object without a block

有任何想法吗？