rails 如果 object.nil?然后魔术''在意见? [英] rails if object.nil? then magic '' in views?

问题描述

这就是其中之一，也许很简单，我永远找不到它，因为其他人都已经知道了.

This is one of those things, that maybe so simple I'll never find it because everyone else already knows it.

我有一些对象必须在视图中检查 nil，所以我不会取消引用 nil:

I've got objects I have to check for nil in my views so I don't dereference a nil:

<%= if tax_payment.user; tax_payment.user.name; end %>

或者我可以做这个变体:

Or I could do this variant:

<%= tax_payment.user ? tax_payment.user.name : '' %>

所以这没问题……对于大多数语言.但我觉得一定有一些闪亮的红宝石或横梁，如果这是我能做的最好的，我仍然想念.

So this is ok ... for most languages. But I feel like there must be some bit of shiny ruby or railness I'm still missing if this is the best I can do.

推荐答案

关于:

<%= tax_payment.user.name if tax_payment.user %>

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