如何营救在Rails中找不到404页面？ [英] How to rescue page not found 404 in rails?

问题描述

如果用户在rails中添加错误的url，如何找不到救援页面。如果网址无效，我希望显示公共文件夹中的404页。怎么做？我正在浏览它，但找不到解决方案。我尝试了多种方法来解决此问题，但是它们似乎没有用。
我被困在这里，请帮忙。

How to rescue page not found if user add wrong url in rails. I hope to show 404 page present in public folder if the url is invalid. How to do that? I was browsing about it but could not find a solution. I tried many ways to fix the problem, but they don't seem to be working. I am stuck here, please help.

推荐答案

我找到了解决方案，请检查一下=> http://techoctave.com/c7/posts/ 36-rails-3-0-从路由错误中解救（最佳解决方案）

i found the solution, check this out => http://techoctave.com/c7/posts/36-rails-3-0-rescue-from-routing-error-solution (great solution)

routes.rb：

routes.rb :

# at the end of you routes.rb
match '*a', :to => 'errors#routing', via: :get

errors_controller.rb：

errors_controller.rb :

class ErrorsController < ApplicationController
  def routing
    render_404
  end
end

application.rb：

application.rb :

rescue_from ActionController::RoutingError, :with => :render_404

 private
  def render_404(exception = nil)
    if exception
        logger.info "Rendering 404: #{exception.message}"
    end

    render :file => "#{Rails.root}/public/404.html", :status => 404, :layout => false
  end

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