Changeset 8415 for branches/2-1-caching/activerecord

Timestamp:

12/16/07 16:56:42 (10 months ago)

Author:

david

Message:

Introduce cache_key management and expansion

Files:

• branches/2-1-caching/activerecord/lib/active_record/base.rb (modified) (1 diff)

branches/2-1-caching/activerecord/lib/active_record/base.rb

@@ -1948 +1948 @@
-        (id = self.id) ? id.to_s : nil # Be sure to stringify the id for routes
-      end
+      
+      # Returns a cache key that can be used to identify this record. Examples:
+      #
+      #   Product.new.cache_key     # => "products/new"
+      #   Product.find(5).cache_key # => "products/5" (updated_at not available)
+      #   Person.find(5).cache_key  # => "people/5-20071224150000" (updated_at available)
+      def cache_key
+        case 
+        when new_record?
+          "#{self.class.name.tableize}/new"
+        when self[:updated_at]
+          "#{self.class.name.tableize}/#{id}-#{updated_at.to_s(:number)}"
+        else
+          "#{self.class.name.tableize}/#{id}"
+        end
+      end
-
-      def id_before_type_cast #:nodoc: