rails 3缓存：命名路由的到期操作

My controller has this:

我的控制器有这个:

caches_action :render_ticker_for_channel, :expires_in => 30.seconds

In my routes file I have this:

在我的路线文件中,我有这个:

match '/render_c_t/:channel_id' => 'render#render_ticker_for_channel', :as => :render_channel_ticker

In the log file I see this:

在日志文件中我看到:

Write fragment views/mcr3.dev/render_c_t/63 (11.6ms)

How do I expire this manually? I need to expire this from a different controller than the render controller, but even within the render controller I can't get it to expire the right thing.

我如何手动过期?我需要从与渲染控制器不同的控制器使其到期,但即使在渲染控制器中,我也无法让它过期正确的事情。

If I do:

如果我做:

 expire_action(:controller => 'render', :action => 'render_ticker_for_channel', :id => c.id)

I see:

Expire fragment views/mcr3.dev/render/render_ticker_for_channel/63 (3.2ms)

If I do:

如果我做:

expire_action(:controller => 'render', :action => 'render_c_t', :id => c.id)

I see:

Expire fragment views/mcr3.dev/render/render_c_t/63 (3.2ms)

This:

expire_action("render_c_t/#{c.id}")

produces:

Expire fragment views/render_c_t/63 (3.5ms)

How can I get it to expire the same path that 'caches_action' is producing?!

我怎样才能让它过期'caches_action'产生的路径?!

3 个解决方案

#1

Use the regex version of expire_fragment:

使用expire_fragment的正则表达式版本:

expire_fragment %r{render_c_t/#{c.id}/}

#2

There should definitely be a more "Rails Way" to do this, but this might work as a back door: Rails.application.routes.url_helpers will give you access to your helpers and each will return a string that's the path and/or url that would be sent to the browser in a Location header.

应该有更多的“Rails方式”来做到这一点,但这可能作为一个后门:Rails.application.routes.url_helpers将让你访问你的助手,每个将返回一个字符串,它是路径和/或网址将在Location标头中发送到浏览器。

Try Rails.application.routes.url_helpers.render_ticker_for_channel_path(63) which should return /render_c_t/63 and Rails.application.routes.url_helpers.render_ticker_for_channel(63, :host => 'mcr3.dev') which should return http://mcr3.dev/render_c_t/63

尝试Rails.application.routes.url_helpers.render_ticker_for_channel_path(63),它应返回/ render_c_t / 63和Rails.application.routes.url_helpers.render_ticker_for_channel(63,:host =>'mcr3.dev'),它们应返回http:// mcr3.dev/render_c_t/63

With some manipulation you could parse apart that second string to get back to the name that Rails is using for the cached action:

通过一些操作,您可以解析第二个字符串以回到Rails用于缓存操作的名称:

def funky_action_cache_name(route, params)
  Rails.application.routes.url_helpers.send(route.to_s+'_url', params).gsub(/https?:\/\//,'')
end

# expire_action(funky_action_cache_name(:render_ticker_for_channel, :id => 63))

Not the most beautiful solution, but should work!

不是最美丽的解决方案,但应该工作!

#3

-1

caches_action :render_ticker_for_channel, :if => proc do 
  !!params['doCache']
end

But for this solution to work we need to pass an extra param either through query string or post body.

但是要使这个解决方案起作用,我们需要通过查询字符串或帖子体来传递额外的参数。

#1