将 Rails 渲染格式限制为 html 的方法 [英] Methods for limiting the Rails render format to html

问题描述

我有一个只有 html 模板的 Rails 2.1.2 站点，例如jobs.html.erb，所以当我请求一个宁静的资源时:

I have a Rails 2.1.2 site that only has html templates e.g. jobs.html.erb, so when I request a restful resource:

www.mysite.com/jobs/1

www.mysite.com/jobs/1

如果我要求，它会以 html 呈现我的工作:

It renders my job in html, however, if I request:

www.mysite.com/jobs/1.xml

www.mysite.com/jobs/1.xml

我得到错误:

模板丢失 缺少模板视图路径中的jobs/show.xml.erbc:/workspace/mysite/app/views

Template is missing Missing template jobs/show.xml.erb in view path c:/workspace/mysite/app/views

更糟糕的是我还可以请求类似的东西

What's worse is that I can also request something like

www.mysite.com/jobs/1.xyz

www.mysite.com/jobs/1.xyz

确实我看到了错误:

模板丢失 缺少模板视图路径中的作业/show.xyz.erbc:/workspace/mysite/app/views

Template is missing Missing template jobs/show.xyz.erb in view path c:/workspace/mysite/app/views

要严格呈现 html 内容，告诉 Rails 我不想渲染 .html.erb 文件以外的任何内容的最简洁和最简单的方法是什么.

To stricly present just html content, what is the cleanest and simplest way to tell Rails that I don't want to render anything other than .html.erb files.

需要注意的是:

• 我的一些控制器操作包含对 render() 方法的条件调用，而其他操作使用默认的 Rails 行为，即如果您不调用 render()，则名为 youraction.html.erb 的模板将被渲染.
• 我的代码没有使用 responds_to() 方法

如果解决方案不在 render/responds_to 级别，那就太好了，因为我必须修改大量操作.也许有一种方法可以配置 Rails 以便只呈现 html 模板?

It would be great if the solution was not at the render/responds_to level as I would have to modify a significant number of actions. Perhaps there is a way to configure Rails so that only html templates are rendered?

推荐答案

如果你不想使用responds_to，你可以这样做:

If you don't want to use responds_to, you can do this:

class ApplicationController < ActionController::Base
  before_filter :allow_only_html_requests

  ...

  def allow_only_html_requests
    if params[:format] && params[:format] != "html"
      render :file => "#{RAILS_ROOT}/public/404.html"
    end
  end

  ...

end

这将在所有请求之前运行，并且只让那些根本不指定格式或指定 html 格式的请求通过.所有其他人都得到404'd.如果您想返回 406 不可接受，您可以创建一个 public/406.html.

That will run before all requests and only let those that do not specify format at all, or that specify html format through. All others get 404'd. You can create a public/406.html if you want to return 406 not acceptable.

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