Question

这是我的问题。

在我的控制器中，我检查URL中给出的参数是否是有效用户，如果不我希望将访问者重定向到“经典”404页面。这是我的控制器：

def home
  @user = User.find_by_domain(params[:domain])

  if !@user.nil?
    respond_to do |format|
      format.html # home.html.erb
    end
    else
      render(:file => "#{RAILS_ROOT}/public/404.html", :status => 404, :layout => false)
    end
end

然而，当@user为nil时，我收到以下错误：

Template is missing Missing template D:/Project/public/404.html with {:handlers=>[:erb, :rjs, :builder, :rhtml, :rxml], :formats=>[:html], :locale=>[:en, :en]} in view paths

我没有修改Rails生成的404页面：

<!DOCTYPE html>
<html>
<head>
  <title>The page you were looking for doesn't exist (404)</title>
  <style type="text/css">
    body { background-color: #fff; color: #666; text-align: center; font-family: arial, sans-serif; }
    div.dialog {
      width: 25em;
      padding: 0 4em;
      margin: 4em auto 0 auto;
      border: 1px solid #ccc;
      border-right-color: #999;
      border-bottom-color: #999;
    }
    h1 { font-size: 100%; color: #f00; line-height: 1.5em; }
  </style>
</head>

<body>
  <!-- This file lives in public/404.html -->
  <div class="dialog">
    <h1>The page you were looking for doesn't exist.</h1>
    <p>You may have mistyped the address or the page may have moved.</p>
  </div>
</body>
</html>

我在这里做错了什么？

Answer 1

尝试这个，可能对你有所帮助，Thx

if !@user.nil?
 respond_to do |format|
   format.html # home.html.erb
 end
else
  raise ActiveRecord::RecordNotFound
end

我是rails应用程序，这是我处理404的方法，在我的application_controller.rb中，我的代码如下：

unless Rails.application.config.consider_all_requests_local
rescue_from Exception, :with => :render_error
rescue_from ActiveRecord::RecordNotFound, :with => :render_not_found
rescue_from ActionController::UnknownController, :with => :render_not_found
rescue_from ActionController::UnknownAction, :with => :render_not_found
end

private
def render_not_found(exception)
  render :template =>"/error/404", :status => 404
end

def render_error(exception)
  render :template =>"/error/500", :status => 500
end

在config / environments / development.rb中确保：

config.consider_all_requests_local = true

Answer 2

1）在ApplicationController中添加：

  rescue_from ActiveRecord::RecordNotFound do |exception|
    render_404
  end

  def render_404
    respond_to do |format|
      format.html { render "errors/404", :status => '404 Not Found', :layout => false }
      format.xml  { render :nothing => true, :status => '404 Not Found' }
    end
    true
  end

2）在Views文件夹中创建一个名为“ errors ”的子文件夹

3）将您当前的404.html文件复制到新的“views / errors”文件夹中，并将其重命名为“ 404.html.erb ”

旁注：

就个人而言，我喜欢创建自定义404内容，然后使用应用程序的布局。我更喜欢用这种方式渲染500个错误。

Rails：重定向到原始404页面时错误丢失模板

2 个答案: