如何通过Ajax和Javascript加载ruby变量？

Question

I am working in an application that uses Rails. I need to be able to set a variable for each user called language. Currently I do this through a ruby session variable that I setup in the controller, but when a user closes their browser I lose their language variable and they have to set it again every time they login. I need to attach this data to the user somehow. I have to use Ruby and Javascript on the front end and I can only make requests for data via Ruby.

 <script type="text/javascript"> var language=getCookie(“language”); //***HELP use ajax to set user language preference in ruby*** function getCookie(name) { var value = "; " + document.cookie; var parts = value.split("; " + name + "="); if (parts.length == 2) return parts.pop().split(";").shift(); } </script> <% use language variable here to request data in ruby %> 

Answer 1

In ruby, by default, cookies only last till the session is closed. You can override that by just giving them an expiration date . Which means they'll last even if the user closes the browser, until they reach that expiration date, Just set it arbitrarily high and you'll be good to go.