diff options
Diffstat (limited to 'activerecord/lib')
| -rw-r--r-- | activerecord/lib/active_record/mixins/touch.rb | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/activerecord/lib/active_record/mixins/touch.rb b/activerecord/lib/active_record/mixins/touch.rb new file mode 100644 index 0000000000..74a1737cab --- /dev/null +++ b/activerecord/lib/active_record/mixins/touch.rb @@ -0,0 +1,35 @@ +module ActiveRecord + module Mixins + # Including this mixins will record when objects of the class are created in a datetime column called "created_at" + # and when its updated in another datetime column called "updated_at". + # + # class Bill < ActiveRecord::Base + # include ActiveRecord::Mixins::Touch + # end + # + # bill = Bill.create("amount" => 100) + # bill.created_at # => Time.now at the moment of Bill.create + # bill.updated_at # => Time.now at the moment of Bill.create + # + # bill.update_attribute("amount", 150) + # bill.created_at # => Time.now at the moment of Bill.create + # bill.updated_at # => Time.now at the moment of bill.update_attribute + module Touch + def self.append_features(base) + super + base.class_eval do + before_create :touch_on_create + before_update :touch_on_update + + def touch_on_create + self.created_at = self.updated_at = Time.now + end + + def touch_on_update + self.updated_at = Time.now + end + end + end + end + end +end
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