Oh, and I forgot to ask... Could EVENTS possibly help me out here? On Friday, June 21, 2013 4:21:16 PM UTC+2, Vanja Dizdarević wrote: > > I am designing a cart system and cannot quite decide how to handle the > multiple-codependent model values. This is quite a conceptual question, I > hope I can explain it right. > > Many properties of a certain Order (and associated Models) record are > dynamic (and directly affect each other) and I am trying to make a robust > data workflow which would yield the most stable, yet flexible results. > > Consider this model schema (unimportant properties are omitted): > > - Order [weight, total_charge, tax_charge, shipping_charge, country_id ...] > - OrderItem [order_id, quantity, unit_price, discount, tax_rate, subtotal, > ...] > - Payment [order_id, amount, ...] > > If you change any of these properties, all others are affected. > eg. Order.country_id affects Order.shipping_charge and OrderItem.tax_rate > eg. OrderItem.discount affects OrderItem.subtotal, Order.total_charge and > Order.tax_charge. > I would also like to be able to make "faux" calculations, without stored > data, by supplying only a data array and have all the data rendered. > etc. > > I am wondering WHERE and HOW should I properly approach these connections > in their respective models? beforeSave callback, afterFind? Both? Make a > behavior? > > Does anyone have experience with this kind of co-dependence in Cake? How > to make it as clean and robust as possible? > > Thanks! > > >
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