Thanks Mark! That helps a lot! I will forward this to the web guy. Bob
On Apr 25, 2012, at 7:19 PM, Mark Wieder wrote: > Bob- > > Tuesday, April 24, 2012, 9:31:05 AM, you wrote: > >> Hi. For anyone who has experience using Ruby on Rails, I have a >> friend who is redesigning the corporate web site, and he wants to >> use ROR. He is stumped at their way of defining relationships. He >> says there is a Belongs To One relationship and a Has One >> relationship. It sounds to me like they are talking about a one to >> one relationship from different directions but why that would be >> useful I do not know. Anyone have any wisdom on the subject? > > Typically in object-oriented design you're presented with the choice > between subclassing an existing object (making a new object with all > the properties of the original, but with a few additions or > differences) or creating an aggregate object which contains two or > more other objects. The textbook answer to when you do one and when > you do the other comes down to: > > if you have a "has a" relationship then you make a complex object > if you have a "is a" relationship then you subclass an existing one > > For instance, if you want to create a button with a blue background, > you'd use a button object and change its properties. That would be an > "is a" relationship. You wouldn't make a group with a button and a > blue graphic overlay object to do the trick. > > Rails also has the concept of "convention over configuration", which > is basically "we've already figured out the best way to do things, so > don't get creative here." The idea being that if you have to go and > configure things they'll break, so just use the frameworks the way > they're written, and design your application around rails rather than > trying to integrate rails into your application. > > -- > -Mark Wieder > mwie...@ahsoftware.net > > > _______________________________________________ > use-livecode mailing list > use-livecode@lists.runrev.com > Please visit this url to subscribe, unsubscribe and manage your subscription > preferences: > http://lists.runrev.com/mailman/listinfo/use-livecode _______________________________________________ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode
