Ruby-on-rails 在 Rails 3.2 中更新多行
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update multiple rows in Rails 3.2
提问by timpone
I am trying to do this
我正在尝试这样做
User.find([23,45,68,123]).update_all(:is_active => true)
but I get:
但我得到：
NoMethodError: undefined method `update_all' for #<Array:0x00000007493778>
What would be the correct syntax? I would rather not iterate through each one if I don't have to.
什么是正确的语法？如果不需要，我宁愿不遍历每一个。
回答by gabrielhilal
findreturns an array, so you cannot use update_all.
find返回一个数组，因此您不能使用update_all.
To solve the problem, I think you can use where, which returns an ActiveRecord::Relation, so the update_allshould work:
为了解决这个问题，我认为你可以使用where，它返回一个ActiveRecord::Relation，所以update_all应该工作：
User.where(:id =>[23,45,68,123]).update_all(:is_active => true)
http://apidock.com/rails/ActiveRecord/Relation/update_all
http://apidock.com/rails/ActiveRecord/Relation/update_all
I hope it helps...
我希望它有帮助...
