Hi,
I'm getting also this error trying to put() [to be exact, trying to do a
get_or_insert] an entity with a computed property. My Model looks more or
less like this (removed non-relevant code):
class DecimalProperty(ndb.StringProperty):
def _validate(self,value):
if not isinstance(value,(int,long,basestring,decimal.Decimal)):
raise ndb.BadValueError("Property %s must be a decimal, string,
float or int." % self.name)
return decimal.Decimal(value).quantize(TWOPLACES)
def _to_base_type(self,value):
if value>=0:
return "P%010d" % (value*100)
else:
new_value = MAX_DECIMAL + (value*100)
return "N%010d" % new_value
def _from_base_type(self,value):
if value[0] == "P":
return (decimal.Decimal(value[1:])/100).quantize(TWOPLACES)
else:
tmp = decimal.Decimal(value[1:])
tmp = - (MAX_DECIMAL - tmp)
return (decimal.Decimal(tmp)/100).quantize(TWOPLACES)
class Accounting(ndb.Model):
expense = DecimalProperty(required=False,indexed=False,default=
DEC_ZERO)
investment = DecimalProperty(required=False,indexed=False,default=
DEC_ZERO)
def accountable_basic_compute_balance(accountable):
expense = accountable.commited.expense - accountable.invoiced.expense
investment = accountable.invoiced.investment - accountable.invoiced.
investment
return Accounting(expense = expense, investment = investment)
class AccountableBasic(ndb.Model):
def __init__(self, *args, **kwargs):
# initialize structure
super(AccountableBasic, self).__init__(*args, **kwargs)
self.commited = Accounting()
self.invoiced = Accounting()
commited = ndb.StructuredProperty(Accounting, repeated = False, indexed=
True)
invoiced = ndb.StructuredProperty(Accounting, repeated = False, indexed=
True)
balance = ndb.ComputedProperty(accountable_basic_compute_balance,repeated
= False, indexed=True)
class YearAccounting(AccountableBasic):
# id (key_name) = year
pass
Everything works fine in the local dev server, when I try to perform a
YearAccounting.get_or_insert in production, I get the following error:
BadRequestError: BLOB, ENITY_PROTO or TEXT properties must be in a raw_property
field
I'm assuming that's related to the "balance" property in YearAccouting
(subclass of AccountableBasic) , which in dev shows as follows in the
datastore viewer:
balance (entity:proto)
<binary>
I had some problems previously in production trying to use a
ComputedProperty that returned a DecimalProperty (basically, a "total"
property: a ComputedProperty that returened a DecimalProperty): dev app
server complained about it, so I've removed it, however it seemed to be
happy with a ComputedProperty that returned a Accounting instance, but the
production runtime doen't look so happy with it...
Any help will be welcome.
thanks in advance,
Jose
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