How to set a multidimentional array in session with rails

Question

I am trying to do something like this :

session[:continent][:filter] = params[:filter]

but it doesn't work, i got this error :

You have a nil object when you didn't expect it!
You might have expected an instance of Array.
The error occurred while evaluating nil.[]=

Answer 1

You need to initialise session[:continent] to be a Hash first. Try this:

session[:continent] ||= {}
session[:continent][:filter] = params[:filter]