2009-12-10 136 views

回答

7

Rails source的快速確認表明它是Rails服務器時,由Ruby的Time.now方法返回:

private 
    def create_with_timestamps #:nodoc: 
    if record_timestamps 
     current_time = current_time_from_proper_timezone 

     write_attribute('created_at', current_time) if respond_to?(:created_at) && created_at.nil? 
     write_attribute('created_on', current_time) if respond_to?(:created_on) && created_on.nil? 

     write_attribute('updated_at', current_time) if respond_to?(:updated_at) && updated_at.nil? 
     write_attribute('updated_on', current_time) if respond_to?(:updated_on) && updated_on.nil? 
    end 

    create_without_timestamps 
    end 

    def update_with_timestamps(*args) #:nodoc: 
    if record_timestamps && (!partial_updates? || changed?) 
     current_time = current_time_from_proper_timezone 

     write_attribute('updated_at', current_time) if respond_to?(:updated_at) 
     write_attribute('updated_on', current_time) if respond_to?(:updated_on) 
    end 

    update_without_timestamps(*args) 
    end 

    def current_time_from_proper_timezone 
    self.class.default_timezone == :utc ? Time.now.utc : Time.now 
    end