142 lines
5.4 KiB
Ruby
142 lines
5.4 KiB
Ruby
require 'action_controller/session/drb_store'
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require 'action_controller/session/mem_cache_store'
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if Object.const_defined?(:ActiveRecord)
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require 'action_controller/session/active_record_store'
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end
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module ActionController #:nodoc:
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module SessionManagement #:nodoc:
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def self.included(base)
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base.extend(ClassMethods)
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base.send :alias_method_chain, :process, :session_management_support
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base.send :alias_method_chain, :process_cleanup, :session_management_support
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end
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module ClassMethods
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# Set the session store to be used for keeping the session data between requests. The default is using the
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# file system, but you can also specify one of the other included stores (:active_record_store, :drb_store,
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# :mem_cache_store, or :memory_store) or use your own class.
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def session_store=(store)
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ActionController::CgiRequest::DEFAULT_SESSION_OPTIONS[:database_manager] =
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store.is_a?(Symbol) ? CGI::Session.const_get(store == :drb_store ? "DRbStore" : store.to_s.camelize) : store
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end
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# Returns the session store class currently used.
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def session_store
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ActionController::CgiRequest::DEFAULT_SESSION_OPTIONS[:database_manager]
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end
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# Returns the hash used to configure the session. Example use:
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#
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# ActionController::Base.session_options[:session_secure] = true # session only available over HTTPS
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def session_options
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ActionController::CgiRequest::DEFAULT_SESSION_OPTIONS
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end
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# Specify how sessions ought to be managed for a subset of the actions on
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# the controller. Like filters, you can specify <tt>:only</tt> and
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# <tt>:except</tt> clauses to restrict the subset, otherwise options
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# apply to all actions on this controller.
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#
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# The session options are inheritable, as well, so if you specify them in
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# a parent controller, they apply to controllers that extend the parent.
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#
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# Usage:
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#
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# # turn off session management for all actions.
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# session :off
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#
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# # turn off session management for all actions _except_ foo and bar.
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# session :off, :except => %w(foo bar)
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#
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# # turn off session management for only the foo and bar actions.
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# session :off, :only => %w(foo bar)
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#
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# # the session will only work over HTTPS, but only for the foo action
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# session :only => :foo, :session_secure => true
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#
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# # the session will only be disabled for 'foo', and only if it is
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# # requested as a web service
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# session :off, :only => :foo,
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# :if => Proc.new { |req| req.parameters[:ws] }
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#
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# All session options described for ActionController::Base.process_cgi
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# are valid arguments.
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def session(*args)
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options = Hash === args.last ? args.pop : {}
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options[:disabled] = true if !args.empty?
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options[:only] = [*options[:only]].map { |o| o.to_s } if options[:only]
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options[:except] = [*options[:except]].map { |o| o.to_s } if options[:except]
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if options[:only] && options[:except]
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raise ArgumentError, "only one of either :only or :except are allowed"
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end
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write_inheritable_array("session_options", [options])
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end
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def cached_session_options #:nodoc:
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@session_options ||= read_inheritable_attribute("session_options") || []
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end
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def session_options_for(request, action) #:nodoc:
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if (session_options = cached_session_options).empty?
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{}
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else
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options = {}
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action = action.to_s
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session_options.each do |opts|
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next if opts[:if] && !opts[:if].call(request)
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if opts[:only] && opts[:only].include?(action)
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options.merge!(opts)
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elsif opts[:except] && !opts[:except].include?(action)
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options.merge!(opts)
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elsif !opts[:only] && !opts[:except]
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options.merge!(opts)
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end
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end
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if options.empty? then options
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else
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options.delete :only
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options.delete :except
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options.delete :if
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options[:disabled] ? false : options
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end
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end
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end
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end
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def process_with_session_management_support(request, response, method = :perform_action, *arguments) #:nodoc:
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set_session_options(request)
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process_without_session_management_support(request, response, method, *arguments)
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end
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private
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def set_session_options(request)
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request.session_options = self.class.session_options_for(request, request.parameters["action"] || "index")
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end
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def process_cleanup_with_session_management_support
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clear_persistent_model_associations
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process_cleanup_without_session_management_support
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end
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# Clear cached associations in session data so they don't overflow
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# the database field. Only applies to ActiveRecordStore since there
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# is not a standard way to iterate over session data.
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def clear_persistent_model_associations #:doc:
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if defined?(@_session) && @_session.respond_to?(:data)
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session_data = @_session.data
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if session_data && session_data.respond_to?(:each_value)
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session_data.each_value do |obj|
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obj.clear_association_cache if obj.respond_to?(:clear_association_cache)
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end
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end
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end
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end
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end
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end
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