Ruby-on-rails Rails Flash.now 不工作

Rails Flash.now not working

提问by Manjunath Manoharan

I have a view from which I make an ajax request to the controller and after the action is successfully completed I initialize the flash.now[:notice]. But after the control goes back to the view. I don't happen to see the flash message.

我有一个视图，从中我向控制器发出 ajax 请求，并在操作成功完成后初始化flash.now[:notice]。但是在控件返回视图之后。我没有看到闪现信息。

flash.now[:notice] = "Request Completed successfully" if @meetings.any?

回答by AJP

When redirecting use

重定向使用时

flash[:notice] = "This message value is available in next request-response cycle"

When rendering use

渲染时使用

flash.now[:notice] = "Message is available in same request-response cycle"

Info from here

来自这里的信息

回答by Arne Cordes

Do you flash.now BEFORE you call render? Otherwise your message won′t appear.

在您调用渲染之前，您是否使用 flash.now？否则您的消息将不会出现。

回答by fmnoise

code in the controller:

控制器中的代码：

flash[:success] = "All good!"
format.html { redirect_to some_path}

and in the view with close button:

并在带有关闭按钮的视图中：

<% flash.each do |key, value| %>
 <%= content_tag(:div, class: "alert alert-#{key} alert-dismissable") do %>
  <%= value %>
  <button type="button" class="close" data-dismiss="alert" aria-hidden="true">&times;</button>   
 <% end %> 
<% end %>

回答by Andrea

Check you've got something like

检查你有类似的东西

<% flash.each do |key, value| %>
    <div class="flash <%= key %>"><%= value %></div>
<% end %>

in your application.html.erb file: if you don't you must add it, as this is where the notice will be displayed.

在 application.html.erb 文件中：如果不添加，则必须添加它，因为这是显示通知的位置。