我有一套积极记录模式,我想对每一模式提出同样的质疑。
model_type = Comment
id = 1
record = model_type.find(id)
model_type = Post
id = 1
record = model_type.find(id)
我如何能够这样做?
您需要使用<代码>一致性/代码>方法。
model_type.constantize.find(id)
Do be careful when accepting arbitrary user data and evaluating it like this. You may generate exceptions for unknown classes.
www.un.org/chinese/sc/presidency.asp ice,我以前曾看到过。 下面是我过去如何做的:
@list = Kernel.const_get(@type).find_by_id_and_account_id(params[:id], current_account.id)
I m 不能确定哪些是更好的,constantize 审视:
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