Method: ActionController::SessionManagement::ClassMethods#session

Defined in:
lib/action_controller/session_management.rb

#session(*args) ⇒ Object Also known as: session=

Specify how sessions ought to be managed for a subset of the actions on the controller. Like filters, you can specify :only and :except clauses to restrict the subset, otherwise options apply to all actions on this controller.

The session options are inheritable, as well, so if you specify them in a parent controller, they apply to controllers that extend the parent.

Usage:

# turn off session management for all actions.
session :off

# turn off session management for all actions _except_ foo and bar.
session :off, :except => %w(foo bar)

# turn off session management for only the foo and bar actions.
session :off, :only => %w(foo bar)

# the session will only work over HTTPS, but only for the foo action
session :only => :foo, :session_secure => true

# the session will only be disabled for 'foo', and only if it is
# requested as a web service
session :off, :only => :foo,
        :if => Proc.new { |req| req.parameters[:ws] }

# the session will be disabled for non html/ajax requests
session :off, 
  :if => Proc.new { |req| !(req.format.html? || req.format.js?) }

# turn the session back on, useful when it was turned off in the
# application controller, and you need it on in another controller
session :on

All session options described for ActionController::Base.process_cgi are valid arguments.



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# File 'lib/action_controller/session_management.rb', line 78

def session(*args)
  options = args.extract_options!

  options[:disabled] = false if args.delete(:on)
  options[:disabled] = true if !args.empty?
  options[:only] = [*options[:only]].map { |o| o.to_s } if options[:only]
  options[:except] = [*options[:except]].map { |o| o.to_s } if options[:except]
  if options[:only] && options[:except]
    raise ArgumentError, "only one of either :only or :except are allowed"
  end

  write_inheritable_array("session_options", [options])
end