有条件地设置方法选项? [英] Conditionally set method options?

问题描述

有没有办法有条件地为方法设置选项?

Is there a way to conditionally set options for a method?

有点像……

article_url(@article, :host => 'myblog.com' if @user.custom_domain?)

所以在这种情况下...只有在用户为其帐户设置了某个选项时才设置 host.

So in that case...only setting host if the user has a certain option set for their account.

推荐答案

opts = @user.custom_domain? ? {:host => 'myblog.com'} : {}
article_url @article, opts

或单衬:

article_url @article, @user.custom_domain? ? {:host => 'myblog.com'} : {}

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