我想这样做。
Current_user.field = 用户:??????
什么时候?
这是我试图做的。
Given /^"([^"]*)" is a(?:|n) "([^"]*)"$/ do |arg1, arg2|
cur_user = User.find(:first, :conditions => [ name = ? , arg1])
cur_user.update_attributes(:role => User::arg2.constantize)
end
虽然保持这种用途并不可行,但我确实知道,这样做会奏效。 In Object.var.constantize context
两种用途:
"User::#{arg2}".constantize
或
User.const_get(arg2)
什么是你试图解决的问题? 如果你放弃一套计算值或组合走到一起的话,那么采用这种方式就很可能是使用“积极”这样的东西。
如果你确实需要以这种方式解决你的问题,就应为此检查结果。 组合(目标)将使你能够以文号/显示不变名称为动力,而不必加以改动。
用途
????????.constantize
你可以做任何事情。
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