errr...what do you think
i read at
http://code.activestate.com/recipes/285262-create-objects-from-variable-class-names/
class Bunch(dict):
def __init__(self,**kw):
dict.__init__(self,kw)
self.__dict__ = self
fruit = Bunch(apples=1, pears=2)
print fruit.apples
print fruit.pears
why doesn't we could use something like this to store data output from
database to object??
2011/1/31 Adrian Bool <a...@logic.org.uk>
>
> Arief,
>
> Just do a search and replace in your text file along the lines of,
>
> search for,
>
> max_digits=0, decimal_places=-127
>
> replace,
>
> max_digits=10, decimal_places=2
>
> And Django should be happy.
>
> aid
>
> On 31 Jan 2011, at 10:29, arief nur andono wrote:
>
> oh please...
>
> i need only to query the table, have no access to modified the table
>
> why there is no way query the database and then make the output as object??
>
> 2011/1/31 Ian <ian.g.ke...@gmail.com>
>
>> On Jan 31, 12:20 am, arief nur andono <ariefnurand...@gmail.com>
>> wrote:
>> > class TempJmlGangguanPyl(models.Model):
>> > singkatpyl = models.CharField(max_length=4, blank=True)
>> > singkatgrd = models.CharField(max_length=4, blank=True)
>> > jumlah_gangguan = models.DecimalField(null=True, max_digits=0,
>> > decimal_places=-127, blank=True)
>> > lama_gangguan = models.DecimalField(null=True, max_digits=0,
>> > decimal_places=-127, blank=True)
>> > class Meta:
>> > db_table = u'temp_jml_gangguan_pyl'
>>
>> It appears that your numeric columns are all decimal-precision
>> floating-point (i.e. "FLOAT" or "NUMBER" with no precision or scale
>> specified), which is a bit of a corner case. The basic problem is
>> that Django core has no field for this. DecimalField can only handle
>> fixed-point, and FloatField uses binary precision. If these columns
>> are actually used to store fixed-point data, you could manually update
>> the generated models (or preferably the original schema) with the
>> actual precision and scale of the data. If they are truly floating-
>> point, then you would probably need to write a custom DecimalField
>> class. I wouldn't recommend changing them to FloatField in any case,
>> because that could result in a loss of precision.
>>
>> A similar problem can be encountered with "NUMBER(p, s)" columns where
>> s < 0 or s > p. Both these scenarios are perfectly valid in Oracle,
>> but are (somewhat arbitrarily) disallowed by the DecimalField
>> validation.
>>
>> I'll make a note of this. At the very least, there should be a more
>> descriptive error message for when this comes up.
>>
>> Ian
>>
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> Adrian Bool
> a...@logic.org.uk
>
>
>
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