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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