如何将Javascript变量传递给Rails Controller? [英] How to pass a Javascript variable to Rails Controller?

问题描述

在我的index.html.erb内部

Inside my index.html.erb

<script type= "text/javascript">
  var msg = "Hello World" ;
</script>

我需要将此var msg传递给我的Post控制器中的控制器说get_variable()方法.

i need pass this var msg to my controller say get_variable() method in my Post controller.

编辑:在与ruby变量相同的index.html.erb中获取javascript变量msg在此先感谢

Edit : get javascript variable msg in same index.html.erb as ruby variable Thanks in Advance

推荐答案

尝试一下

<%= link_to_remote, 'Message', :url=>{:controller=>'controller_name', :action=>'method_name'}, :with=> "'msg='+msg" %>

controller_name.rb

controller_name.rb

def method_name
  @message= params[:msg]
  puts @message # >> should be print "Hello World"

end

已编辑

<%= link_to_remote, 'Message', :url=>{:controller=>'controller_name', :action=>'method_name'}, :with=> "'msg='+msg" %>
<div id ='show_message'></div>

controller_name.rb

controller_name.rb

def method_name
  @message= params[:msg]
  render :update do|page|
    page.replace_html 'show_message', @message
  end
end

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