[英]How to get id values after saving an ActiveRecord model in rails
I have an ActiveRecord model (I'm on rails 2.3.8) called user and I'm saving it as我有一个名为 user 的 ActiveRecord model (我在 Rails 2.3.8 上),我将其保存为
user = User.new
user.name = "user name"
user.save!
what I want to do is get the generated user id after creating the user.我想要做的是在创建用户后获取生成的用户 ID。 But currently it returns true/ false value upon saving但目前它在保存时返回真/假值
How can I get the saved user id?如何获取保存的用户 ID?
Just call user.id
after you've saved.保存后只需调用user.id
。
For people who looking for on create in model, below is the way:对于在 model 中寻找创建的人,方法如下:
class User < ActiveRecord::Base
...
after_create :do_something
def self.do_something
user_id = id #this will have last created id
# use this according to your needs
end
...
end
the way I did it was我这样做的方式是
class User < ActiveRecord::Base
...
id = nil
after_save {id = self.id}
...
end
and then the local variable id is available throughout the model然后局部变量 id 在整个 model 中可用
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