On 2017-11-19 13:28, Axel Braun wrote:
> Am Samstag, 18. November 2017, 23:04:46 CET schrieb Cédric Krier:
> > On 2017-11-18 22:37, Christophe (.net) wrote:
> > > Le 11/11/2017 à 11:18, Cédric Krier a écrit :
> > > > I want to be clear about the design. It was done with the idea to
> > > > apply on a set of line only one promotion. This way promotion does not
> > > > accumulate (there is a unique field 'promotion' on sale line).
> > > > I think we could maybe change the test to decide line by line if the
> > > > promotion applied instead of having a unique test on all lines.
> > > >
> > > > But the decision is to decide how to apply such kind of promotions:
> > > > - 15% if quantity of product is greater than 10kg.
> > > > - 10% for products of category "Fruits".
I think I must clearly write how those percentages will be encoded in
the module:
-15%: unit_price * 0.85
-10%: unit_price * 0.9
> > > > So now we have a sale with:
> > > > - 5kg of potatoes at 10€/kg
> > > > - 5kg of apples at 15€/kg
> > > > - 3u of melons at 20€/u
> > > >
> > > > Should the sale be:
> > > >
> > > > A)
> > > >
> > > > - potatoes: 8.5€/kg
> > > > - apples: 13.5€/kg
> > > > - melons: 18€/u
> > > >
> > > > B)
> > > >
> > > > - potatoes: 8.5€/kg
> > > > - apples: 12.75€/kg
> > > > - melons: 18€/u
> > > >
> > > > C)
> > > >
> > > > - potatoes: 8.5€/kg
> > > > - apples: 12.75€/kg
> > > > - melons: 20€/u
> > > >
> > > > For now, we have option C implemented, but maybe we should implement B.
> > >
> > > For case B, if it is sold 15kg of apples you think to apply both
> > > promotions at once?
> >
> > I do not understand the question. In the example of case B, both
> > promotions are already applied.
>
> But why? apples is less than 10kg, so only 10% for category 'fruits' should
> apply.
5kg of apples + 5kg of potatoes = 10kg of product.
> In general one would expect that all matching conditions are applied. So if
> 15kg apples are sold, I would expect to see 11,25€/kg.
The module formula are based by default on the sale price so the
promotions are not cumulative. Non cumulative promotion is the most
common practice as far as I have seen. But it is possible to add other
base price for computation which may include previous promotions.
Such case the formula would be written:
current_price - (unit_price * 0.15)
--
Cédric Krier - B2CK SPRL
Email/Jabber: [email protected]
Tel: +32 472 54 46 59
Website: http://www.b2ck.com/
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