I think you are misunderstanding the error message.
BadValueError: Property size must be a float
The error message is saying you must pass in a 'float'ing point
number, and 0 is not a floating point number.
# This does not work
gdb = GQLDB()
gdb.define_table('potato',gdb.Field('size','double',default=0))
gdb.potato.insert()
# This works
gdb = GQLDB()
gdb.define_table('potato',gdb.Field('size','double',default=0.0))
gdb.potato.insert()
I am not a fan of type coercion, because it will mask bugs.
Robin
On Feb 9, 4:54 pm, mdipierro <mdipie...@cs.depaul.edu> wrote:
> correction. You can insert an empty records if at least one field has
> a default value. From your email it there seems to be a problem on
> GAE.
>
> @Robin. Can you double check this one?
>
> Massimo
>
> On Feb 9, 4:40 pm, mdipierro <mdipie...@cs.depaul.edu> wrote:
>
> > double is correct.
>
> > Currently you cannot insert an empty record
>
> > db.potato.insert()
>
> > even if fields have a default. I can change it.
>
> > On Feb 9, 4:08 pm, "Sebastian E. Ovide" <sebastianov...@gmail.com>
> > wrote:
>
> > > Hi Massimo,
>
> > > is this a bug ?
>
> > > the following model wont work on GAE:
>
> > > db.define_table('potato',
> > > # SQLField('size','float',default=0)
> > > SQLField('size','double',default=0)
> > > )
>
> > > db(db.potato.id>0).delete()
> > > if len(db(db.potato.id>0).select())==0:
> > > db.potato.insert()
> > > mydb=db(db.potato.id>0).select()[0]
>
> > > it says
>
> > > ERROR 2009-02-09 22:01:07,757 main.py] Traceback (most recent call
> > > last):
> > > File "C:\dev\quadraforte\reborn\qoofer\gluon\restricted.py", line 98, in
> > > restricted
> > > exec ccode in environment
> > > File "C:\dev\quadraforte\reborn\qoofer\applications\tests/models/db.py",
> > > line 16, in <module>
> > > db.potato.insert()
> > > File "C:\dev\quadraforte\reborn\qoofer\gluon\contrib\gql.py", line 298,
> > > in
> > > insert
> > > tmp = self._tableobj(**fields)
> > > File
> > > "C:\Programmi\Google\google_appengine\google\appengine\ext\db\__init__.py",
> > > line 588, in __init__
> > > prop.__set__(self, value)
> > > File
> > > "C:\Programmi\Google\google_appengine\google\appengine\ext\db\__init__.py",
> > > line 388, in __set__
> > > value = self.validate(value)
> > > File
> > > "C:\Programmi\Google\google_appengine\google\appengine\ext\db\__init__.py",
> > > line 2135, in validate
> > > raise BadValueError('Property %s must be a float' % self.name)
> > > BadValueError: Property size must be a float
>
> > > and if I set it as float it says:
>
> > > ERROR 2009-02-09 22:05:50,595 main.py] Traceback (most recent call
> > > last):
> > > File "C:\dev\quadraforte\reborn\qoofer\gluon\restricted.py", line 98, in
> > > restricted
> > > exec ccode in environment
> > > File "C:\dev\quadraforte\reborn\qoofer\applications\tests/models/db.py",
> > > line 10, in <module>
> > > SQLField('size','float',default=0)
> > > File "C:\dev\quadraforte\reborn\qoofer\gluon\contrib\gql.py", line 167,
> > > in
> > > define_table
> > > t._create()
> > > File "C:\dev\quadraforte\reborn\qoofer\gluon\contrib\gql.py", line 265,
> > > in
> > > _create
> > > raise SyntaxError, 'SQLField: unkown field type'
> > > SyntaxError: SQLField: unkown field type
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