diff options
Diffstat (limited to 'activerecord')
| -rw-r--r-- | activerecord/CHANGELOG | 2 | ||||
| -rwxr-xr-x | activerecord/lib/active_record/base.rb | 16 |
2 files changed, 18 insertions, 0 deletions
diff --git a/activerecord/CHANGELOG b/activerecord/CHANGELOG index 952033eefc..a6e963bebe 100644 --- a/activerecord/CHANGELOG +++ b/activerecord/CHANGELOG @@ -1,5 +1,7 @@ *SVN* +* Added ActiveRecord::Base.cache_key to make it easier to cache Active Records in combination with the new ActiveSupport::Cache::* libraries [DHH] + * Make sure CSV fixtures are compatible with ruby 1.9's new csv implementation. [JEG2] * Added by parameter to increment, decrement, and their bang varieties so you can do player1.increment!(:points, 5) #10542 [Sam] diff --git a/activerecord/lib/active_record/base.rb b/activerecord/lib/active_record/base.rb index 149ee61c52..d784f59d11 100755 --- a/activerecord/lib/active_record/base.rb +++ b/activerecord/lib/active_record/base.rb @@ -1959,6 +1959,22 @@ module ActiveRecord #:nodoc: # We can't use alias_method here, because method 'id' optimizes itself on the fly. (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: read_attribute_before_type_cast(self.class.primary_key) |