How to set in a middleware a variable accessible in all my application?

Question

I am using Ruby on Rails 3 and I am trying to use middlewares in order to set a variable @variable_name accessible later in controllers.

For example my midd

Answer 1

You can use 'env' for that. So in your middleware you do this:

def call(env)
  env['account'] = Account.find(1)
  @app.call(env)
end

You can get the value by using 'request' in your app:

request.env['account']

And please don't use global variables or class attributes as some people suggest here. That's a sure way to get yourself into troubles and really is a bad habit.