覆盖 Rails default_scope [英] Overriding a Rails default_scope

问题描述

如果我有一个默认范围的 ActiveRecord::Base 模型:

If I have an ActiveRecord::Base model with a default-scope:

class Foo < ActiveRecord::Base

  default_scope :conditions => ["bar = ?",bar]

end

有没有办法使用 default_scope 条件来做一个 Foo.find 没有?换句话说，您可以覆盖默认范围吗?

Is there any way to do a Foo.find without using the default_scope conditions? In other words, can you override a default scope?

我原以为在名称中使用default"表示它是可覆盖的，否则它会被称为global_scope之类的东西，对吗?

I would have thought that using 'default' in the name would suggest that it was overridable, otherwise it would be called something like global_scope, right?

推荐答案

简短回答:除非确实必须，否则不要使用 default_scope.使用命名范围可能会更好.话虽如此，如果需要，您可以使用 with_exclusive_scope 来覆盖默认范围.

Short answer: Do not use default_scope unless you really have to. You'll probably be better off with named scopes. With that said, you can use with_exclusive_scope to override the default scope if you need to.

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