appreciate that, still learning python so I'm looking forward what I
can learn from your fix.
On Thu, Jun 4, 2009 at 11:16 PM, mdipierro<mdipie...@cs.depaul.edu> wrote:
>
> I know what to do. I will fix it.
>
> On Jun 4, 3:27 pm, HansD <hans.don...@pobox.com> wrote:
>> not yet sure how to fix this, but fields of this type results in:
>>
>> class="<gluon.sql.SQLCustomType instance at 0x0990DC10>"
>>
>> On 25 mei, 07:17, mdipierro <mdipie...@cs.depaul.edu> wrote:
>>
>> > I do not know if this is a good idea and I'd like to hear your
>> > opinions:
>> > I have added in trunk to define custom column types
>>
>> > Here is an example of usage:
>>
>> > import cPickle
>> > from gluon.sql importSQLCustomType
>> > from decimal import Decimal
>>
>> > decimal =SQLCustomType(native='NUMERIC(10,2)',decoder=(lambda x:
>> > Decimal(str(x))))
>>
>> > pickable =SQLCustomType(type='text',encoder=(lambda x:
>> > "'%s'"%cPickle.dumps(x).replace("'","''")),decoder=(lambda x:
>> > cPickle.loads(x)))
>>
>> > db.define_table('test',
>> > SQLField('my_decimal',type=decimal),
>> > SQLField('my_pickle',type=pickable))
>>
>> > theSQLCustomTypeconstructor takes the following arguments:
>> > - type indicates how web2py sqlform should treat this field
>> > - native indicates how the database should treat this field
>> > - encoder indicates how to represent (and escape) a value in SQL
>> > - decoder indicates how to process the value once it is extracted from
>> > the database
>>
>> > It seems to work well with migrations. Of course using native=....
>> > makes the custom table not portable across databases.
>>
>> > The implementation is not very clean but can be improved.
>>
>> > Is this a good idea?
>>
>> > Massimo
> >
>
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