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I has some features which settings I save in session. But after 1 times reload they reset and session values doesn't exist there.

First load I get session

{"session_id"=>"xxx"}

After save value I get 

{"session_id"=>"xxx", "value"=>"100"}

And when I reload my page again I get reset session

{"session_id"=>"xxx"}

Why it can be?

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2
  • How are you manipulating the session? Commented Oct 12, 2013 at 17:58
  • add - session[:value] = 100 and remove - session[:value] = nil Commented Oct 12, 2013 at 18:02

3 Answers 3

Reset to default
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Igor is exactly right. If that happens to be the case in your application, do something like this:

$(document).ajaxSend((event, jqxhr, settings) -> jqxhr.setRequestHeader("X-CSRF-Token", $('meta[name="csrf-token"]').attr('content')) jqxhr.setRequestHeader("X-CSRF-Param", $('meta[name="csrf-param"]').attr('content')) return )

Now that's CoffeScript, and that assumes you are using JQuery. Regardless, the point is you need to send the CSRF metadata along for the ride with your Ajax requests.

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Comments

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Most likely you're not passing the CSRF token in one of your (probably AJAX) requests. If rails receives invalid CSRF token - it resets the session.

Check out: http://guides.rubyonrails.org/security.html#cross-site-request-forgery-csrf

Update: Vidya is right. You may also want to add the following code to your ApplicationController - to set the XSRF token for AJAX calls

after_filter :set_csrf_cookie def set_csrf_cookie cookies['XSRF-TOKEN'] = form_authenticity_token if protect_against_forgery? end
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I have <%= csrf_meta_tags %> in head tag. Does you mean that?
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Thanks for every one, I find problem but I can't explain it. Later I remove row from js file app/assets/javascripts/application.js

//= require jquery_ujs

When I put it back, it's stop reset session values.

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Cool! Didn't know jquery_ujs handles the CSRF token (which is logical btw). Don't forget to accept your own answer, so that others could know what worked for you.

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