要查找URI:

current_uri = request.env['PATH_INFO']
# If you are browsing http://example.com/my/test/path, 
# then above line will yield current_uri as "/my/test/path"

找到路径，即控制器，动作和参数:

path = ActionController::Routing::Routes.recognize_path "/your/path/here/"

# ...or newer Rails versions:
#
path = Rails.application.routes.recognize_path('/your/path/here')

controller = path[:controller]
action = path[:action]
# You will most certainly know that params are available in 'params' hash

你可以通过rake:routes看到所有的路由(这可能对你有帮助)。

我假设你指的是URI:

class BankController < ActionController::Base
  before_filter :pre_process 

  def index
    # do something
  end

  private
    def pre_process
      logger.debug("The URL" + request.url)
    end
end

根据你下面的评论，如果你需要控制器的名称，你可以简单地这样做:

  private
    def pre_process
      self.controller_name        #  Will return "order"
      self.controller_class_name  # Will return "OrderController"
    end

如果你还需要这些参数:

current_fullpath = request.env['ORIGINAL_FULLPATH']
# If you are browsing http://example.com/my/test/path?param_n=N 
# then current_fullpath will point to "/my/test/path?param_n=N"

记住，你总是可以调用<%=调试请求。Env %>，以查看所有可用选项。

你可以这样做:

def active_action?(controller)
   'active' if controller.remove('/') == controller_name
end

现在，你可以这样用:

<%= link_to users_path, class: "some-class #{active_action? users_path}" %>

我找到了批准的答案，请求。env['PATH_INFO']，用于获取基本URL，但如果你有嵌套路由，它并不总是包含完整路径。你可以使用request。env['HTTP_REFERER']获取完整路径，然后查看它是否匹配给定的路由:

request.env['HTTP_REFERER'].match?(my_cool_path)