Rails:named_scope，lambda和blocks

本文介绍了Rails:named_scope，lambda和blocks的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

我认为以下两个是等效的:

I thought the following two were equivalent:

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

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

但是Ruby在抱怨:

ArgumentError: tried to create Proc object without a block

有什么想法吗?

推荐答案

这是解析器问题.试试这个

it's a parser problem. try this

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

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