Re: Shopping Cart Discount System

Karl DeSaulniers <karl@designdrumm.com> wrote: >Hello Everyone, >Hope all are well. Quick and hopefully painless question. >Is there any examples on how to build a discount system >into your shopping cart out there that anyone knows of? >I am using MySQL and PHP. I have built one of my own so far, >but am having trouble making sense of what goes where. > >For example. If a product has miscellaneous charges, >lets say.. glitter is extra on your shirt. >How is discounts applied? I mean, as far as discounts go, >lets say its 20% a shirt and this shirt has glitter. >Is it best practice to apply the discount to just the shirt >or the shirt and glitter as a combo discount. >I know this is somewhat dependent on the owners choice >of what he/she wants to give the discount on, >but my question is of the programing of it. >Do I build conditions for the shirt to get a discount applied >then the miscellaneous charges, or combine the totals of the two, >then apply the discount to the sum? > >Then lets say there is a cart discount also being applied. >Is it best practice to apply this to the total of items then >add the shipping, rush charges and tax, or to the total of the whole >cart >including shipping, rush charges then add the tax after applying the >discount? > >Sorry for the run-on question, hope this makes sense enough to merit >help. > >HNY, > >Best, > >Karl DeSaulniers >Design Drumm >http://designdrumm.com > >PS: Because this question could be answered by either database or >general, is the only reason for the double post. >Wont be making a habit of it.. :) I would apply the discounts where they made sense from a customer POV. Would you expect a t-shirt discount to be applied to only the base item or the product as a whole? I'd say tge whole thing. You could have various areas in your code that apply discounts at different levels: per item, per group of items (bogof, etc), and per basket. Thanks, Ash http://www.ashleysheridan.co.uk