在Rails 3.1 RC6上,给出
class Animal < ActiveRecord::Base
default_scope where(legs: 4)
end
以下内容无法按预期工作:
class Man < Animal
default_scope unscoped.where(legs: 2)
end
生成的SQL语句如下所示:
SELECT * FROM animals WHERE legs = 4 AND legs = 2
如何完全覆盖父类的默认范围？
我也尝试了以下所有工作:
default_scope{ unscoped.where legs: 2 }
default_scope with_exclusive_scope{ legs: 2 }