ActionDispatch SessionRestoreError

I am in a SessionInfo trouble.

error message is ActionDispatch::Session::SessionRestoreError (Session contains objects whose class definition isn't available. Remember to require the classes for all objects kept in the session. (Original exception: uninitialized constant SessionInfo [NameError])

my first ajax call is using flexigrd to rails, this is SessionRestoreError. my second ajax call is using jquery using ajax to rails. this is somtimes work, sometime doesn't work.

I use rails3.0.9, ruby1.9.2, jqeury, flexigrid and os is ubunt.

how do I make ajax call?

This has almost certainly nothing to do with ajax or your javascript but with what you are storing in your session. In general, storing complex objects in the session is a bad idea. As the error message says, if you do go down this down you'll need to ensure that the the classes for objects that might be in the session are already loaded.

Fred

HI I'm shon. Your advice is right. i changed the session to be simple. then it works fine.

Thank you.