This is not your entire database definition, is it? It might help if you 
post more of your code.

Regards,
Ales

On Tuesday, May 7, 2013 3:36:52 PM UTC+2, José Manuel López wrote:
>
> Thank you Steve :), unfortunately it's no the error I've it ok in my code 
> (maybe a problem while coping it here), 
> Any other ideas?
>
> On Tuesday, May 7, 2013 1:46:43 PM UTC+2, 黄祥 wrote:
>>
>> it seems that you have a space on your table.
>> table = SQLFORM.smartgrid(db. OffersCity, constraints=None) 
>> should be
>> table = SQLFORM.smartgrid(db.OffersCity, constraints=None)
>>
>> best regards
>>
>> On Tuesday, May 7, 2013 7:29:49 AM UTC-4, José Manuel López wrote:
>>>
>>> Hi, 
>>> Lets say I have this table:
>>> db.define_table('OffersCity', 
>>>                 Field('city', db.City), 
>>>                 Field('offer', db.Offer),
>>>                 Field('hotel', db.Hotel))
>>>
>>> I want to create a smartgrid, but it's not working... I don't know why: 
>>> Here it's my code:
>>> table = SQLFORM.smartgrid(db. OffersCity, constraints=None) 
>>> And this is the error given: 
>>> Query Not Supported: invalid filter: __key__ filter value must be a 
>>> Key;received 
>>> None (a NoneType)
>>> I'm on Google App Engine.
>>> Kind Regards,
>>> Jose M 
>>>
>>>
>>>
>>>

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