Rails3-如何使用link_to帮助程序将Javascript变量发送到控制器的动作? [英] Rails3 - How to send Javascript Variable to a controller's action with the link_to helper?

问题描述

如果我有以下javascript代码

If i have the following javascript code

var myVar = 0;

function setNewValforVar(newValue){
    myVar = newValue;
}

我正在调用setNewValforVar函数n次

因此，当我单击链接时，它会将myVar值发送到远程链接之类的控制器动作中，例如

so when I click on a link it'd send myVar value to the controller action in a remote link like

<%=link_to "My Link",{:action=>"myAction"},:data=>''sval='+myVar',:remote=>true%>

我会使用Rails 2.3.x

I Rails 2.3.x I'd do this with

<%=link_to_remote "My Link",:url=>{:action=>"myAction"},:with=>"'sval='+myVar"%>

而我正在通过以下方式获得控制器的操作

and i was getting this on the controller's action with

params["myVar"]

如何使用link_to助手在Rails 3上执行此操作?

how do I do this on Rails 3 with the link_to helper?

推荐答案

Rails 3不再支持此行为.您将必须创建一个表单来提交该值，或者修改链接的href以在查询字符串中包含该值.

Rails 3 no longer supports this behavior. You will have to either create a form to submit the value, or modify the href of the link to include the value in the query string.

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