Initial

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@4 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

1 files changed, 72 insertions, 0 deletions

diff --git a/actionpack/lib/action_controller/session/active_record_store.rb b/actionpack/lib/action_controller/session/active_record_store.rb
new file mode 100644
index 0000000000..c144f62e35
--- /dev/null
+++ b/actionpack/lib/action_controller/session/active_record_store.rb
@@ -0,0 +1,72 @@
+begin
+
+require 'active_record'
+require 'cgi'
+require 'cgi/session'
+
+# Contributed by Tim Bates
+class CGI
+  class Session
+    # ActiveRecord database based session storage class.
+    #
+    # Implements session storage in a database using the ActiveRecord ORM library. Assumes that the database
+    # has a table called +sessions+ with columns +id+ (numeric, primary key), +sessid+ and +data+ (text).
+    # The session data is stored in the +data+ column in YAML format; the user is responsible for ensuring that
+    # only data that can be YAMLized is stored in the session.
+    class ActiveRecordStore
+      # The ActiveRecord class which corresponds to the database table.
+      class Session < ActiveRecord::Base
+        serialize :data
+        # Isn't this class definition beautiful?
+      end
+
+      # Create a new ActiveRecordStore instance. This constructor is used internally by CGI::Session.
+      # The user does not generally need to call it directly.
+      #
+      # +session+ is the session for which this instance is being created.
+      #
+      # +option+ is currently ignored as no options are recognized.
+      #
+      # This session's ActiveRecord database row will be created if it does not exist, or opened if it does.
+      def initialize(session, option=nil)
+        @session = Session.find_first(["sessid = '%s'", session.session_id])
+        if @session
+          @data = @session.data
+        else
+          @session = Session.new("sessid" => session.session_id, "data" => {})
+        end
+      end
+
+      # Update and close the session's ActiveRecord object.
+      def close
+        return unless @session
+        update
+        @session = nil
+      end
+
+      # Close and destroy the session's ActiveRecord object.
+      def delete
+        return unless @session
+        @session.destroy
+        @session = nil
+      end
+
+      # Restore session state from the session's ActiveRecord object.
+      def restore
+        return unless @session
+        @data = @session.data
+      end
+
+      # Save session state in the session's ActiveRecord object.
+      def update
+        return unless @session
+        @session.data = @data
+        @session.save
+      end
+    end #ActiveRecordStore
+  end #Session
+end #CGI
+
+rescue LoadError
+  # Couldn't load Active Record, so don't make this store available
+end
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