Set a Session inside Javascript in Ruby on Rails

Question

I know this is possibe inside a js function

<% session[:comment] = "This is the comment" %>

But is there any way to make this work.

var comment = "This is the comment";
<% session[:comment] = comment %>

Because in my app I get this comment from a text field. So i have to set the string dynamically. So is there a way I can make this happen.

anusreemn · Accepted Answer · 2014-06-13 04:29:20Z

2

I don't think u can set session in this way.

But a solution will be to use cookies instead of session.

There are JS plugins to set cookies and you can use them in your ruby code.

answered Jun 13, 2014 at 4:29

anusreemn

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AshwinKumarS · Accepted Answer · 2014-06-09 07:18:43Z

0

This is not possible directly. The javascript part runs on the client side and hence you cant insert the values into a server side variable without sending it back to the server. You will have to use ajax calls to do it.

This quora post should help : http://www.quora.com/Ruby-on-Rails-web-framework/Can-I-pass-a-JavaScript-variable-to-a-Rails-method

answered Jun 9, 2014 at 7:18

AshwinKumarS

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5 Comments

Nidhin S G Over a year ago

So I cant set this session.. So sad. I cant use ajax because as soon as this comment gets set another url is getting caled

AshwinKumarS Over a year ago

You can always place an ajax call before the next url is hit. Need more insight on your code for the exact solution.

Nidhin S G Over a year ago

actualy there is a text field.. and using jquery onchange im saving its value in comments variable. I have an a tag with onclick im going to another url which is out from the project(fb_share_page). and on closing that page fb automatically gives a '/fb_close' url. and with which I moves to another controller method.

Nidhin S G Over a year ago

I want this comment in that controller. As i cant set any params in fb_close.. i want to set session.

AshwinKumarS Over a year ago

Before the redirection (inside the on change itself it can be done judging by the looks of it) you need to make an ajax call and store it in a persistent variable(maybe a static variable or global constant or DB). After this ajax call completes you can proceed with the other options inside the success block for the ajax call.

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