我是铁路的开端人,
我们能够使用<条码>:来源,标明范围?
我可以与一些协会和其他协会一起使用。
Thanks Mark
No, you can t because you don t need. A named scope is part of the model where defined in.
class Post
named_scope :published, :conditions => { :published => true }
end
然而,这并不阻止你通过协会使用指定范围。
class Category
has_many :posts
end
category.posts # => all posts
category.posts.published # only published posts
如果你能够用在一站式电话中的话,你一般可以用一个指定范围。 文件()中列出了这些参数,但我并不肯定来文方是其中之一。 据我所知,这是为了一种_熟的关系,而不是发现。
然而,指定范围可适用于关系,因此或许可以评估你重新制定的内容。
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