There might be a better way, but basically: prop = ObjectClass.properties[:qty]
puts my_object.dirty_attributes[prop] puts my_object.original_attributes[prop] On 17/06/2011, at 02:03, Javier wrote: > Hi, > > I wanted to check values before being saved, for example like this: > > myobject.qty = 5 > myobject.save > > class ObjectClass > include DataMapper::Resource > before :save, :fix_qty > > def fix_qty > if self.dirty.qty > self.qty > # do something > end > end > end > > "self.dirty.qty" should have the new assigned value, and "self.qty" > the value from database > > How should I do that? > > -- > You received this message because you are subscribed to the Google Groups > "DataMapper" group. > To post to this group, send email to [email protected]. > To unsubscribe from this group, send email to > [email protected]. > For more options, visit this group at > http://groups.google.com/group/datamapper?hl=en. > -- You received this message because you are subscribed to the Google Groups "DataMapper" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/datamapper?hl=en.
