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Amer
erp5
Commits
10be013b
Commit
10be013b
authored
Apr 25, 2014
by
Julien Muchembled
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New method to easily define cumulative amount generator lines
parent
6291d0f6
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2
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2 changed files
with
62 additions
and
0 deletions
+62
-0
product/ERP5/mixin/amount_generator.py
product/ERP5/mixin/amount_generator.py
+17
-0
product/ERP5/tests/testTradeModelLine.py
product/ERP5/tests/testTradeModelLine.py
+45
-0
No files found.
product/ERP5/mixin/amount_generator.py
View file @
10be013b
...
...
@@ -101,6 +101,23 @@ class BaseAmountDict(Implicit):
self
.
_dict
[
variated_base_amount
]
=
value
return
value
getAmountQuantity__roles__
=
None
# public
def
getAmountQuantity
(
self
,
base_amount
,
variation_category_list
=
()):
"""Get intermediate computed quantity for given base_application
Public wrapper to _getQuantity() that can be used directly to apply several
amount generators one after the other, without having to define a dedicated
base amount category at each step. Example:
- movement with quantity*price = 100
- N discounts of 10%, each one with:
- base_application=base_amount/cumulative,service_module/discount_<i>
- base_contribution=base_amount/cumulative
- with an appriate custom script using this method, you can get an overall
discount of .1^N
(with N=3, final price=72.9)
"""
return
self
.
_getQuantity
((
base_amount
,
variation_category_list
))
getBaseAmountList__roles__
=
None
# public
def
getBaseAmountList
(
self
):
"""Return list of amounts that are sub-objects of self
...
...
product/ERP5/tests/testTradeModelLine.py
View file @
10be013b
...
...
@@ -854,6 +854,51 @@ return getBaseAmountQuantity""")
self
.
assertEqual
(
sorted
(
x
[
1
:]),
sorted
(
y
.
getTotalPrice
()
for
y
in
amount_list
))
def
test_04_cumulativePriceAdjustment
(
self
):
"""
Check a trade condition with 3 discounts that are applied one after the
other using a single base_amount category and trivial dependencies
between trade model lines, which can even be unordered.
The 10%, 40% & 30% discounts result in an overall 62.2% discount,
and not 80%.
"""
base_amount
=
self
.
setBaseAmountQuantityMethod
(
'cumulative'
,
"""
\
return lambda delivery_amount, base_application, **kw:
\
\
delivery_amount.getTotalPrice() +
\
\
delivery_amount.getAmountQuantity(base_application)"""
)
discount_list
=
.
1
,
.
4
,
.
3
tax
=
self
.
createServiceTax
()
trade_condition
=
self
.
createTradeCondition
((),
(
dict
(
reference
=
'tax'
,
resource_value
=
tax
,
price
=
.
2
,
base_application
=
'base_amount/tax'
),
))
for
discount
in
discount_list
:
self
.
createTradeModelLine
(
trade_condition
,
resource_value
=
self
.
createResource
(
'Service'
,
use
=
'discount'
),
price
=-
discount
)
createZODBPythonScript
(
trade_condition
,
"TradeModelLine_asPredicate"
,
""
,
"""
\
if not context.getReference():
relative_url = context.getResourceValue().getRelativeUrl()
context = context.asContext()
context.setReference(relative_url)
context.setBaseApplicationList((%r, relative_url))
context.setBaseContributionList((%r, 'base_amount/tax'))
return context"""
%
(
base_amount
,
base_amount
))
taxed
=
self
.
createProductTaxed
()
order
=
self
.
createOrder
(
trade_condition
,
(
dict
(
price
=
1
,
quantity
=
2
,
resource_value
=
taxed
),
dict
(
price
=
3
,
quantity
=
4
,
resource_value
=
taxed
),
))
total_price
=
order
.
getTotalPrice
()
total_ratio
=
reduce
(
lambda
x
,
y
:
x
*
(
1
-
y
),
discount_list
,
1.2
)
amount_list
=
order
.
getAggregatedAmountList
()
self
.
assertAlmostEqual
(
total_price
*
total_ratio
,
sum
((
x
.
getTotalPrice
()
for
x
in
amount_list
),
total_price
))
def
test_tradeModelLineWithFixedPrice
(
self
):
"""
Check it's possible to have fixed quantity on lines. Sometimes we want
...
...
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