before_filter 和 respond_to 格式 [英] before_filter and respond_to formats

问题描述

在我的 Rails 应用的控制器中，我可以这样做:

In a controller in my Rails app, I can do this:

before_filter :login_required, :except => :index

但我想不仅根据操作名称而且根据请求的格式来应用过滤器.换句话说，我想做这样的事情:

But I would like to apply the filter not only based on the action name but on the format of the request. In other words, I would like to do something like this:

before_filter :login_required, :except => {:action => :index, :format => :js}

这可能吗?

推荐答案

你需要自己动手.试试这个作为起点.

You'll need to roll your own a bit. Try this as a starting point.

 before_filter :login_required, :except => [:index]

 before_filter(:only => :index) do |controller|
   login_required unless controller.request.format.js?
 end

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