Thanks you Marlysson but it was not the missing 's'. Ticket is:
'Field' object has no attribute 'title'
Il giorno martedì 14 giugno 2016 12:53:24 UTC+2, Marlysson Silva ha scritto:
>
> results = db(db.products).select(db.products.category, orderby=db.products
> .category.title, groupby=db.products.category)
>
> You probability forget the "s" at name of table "products" , I think it so
> .
>
> Em segunda-feira, 13 de junho de 2016 12:31:33 UTC-3, Gael Princivalle
> escreveu:
>>
>> New model:
>> db.define_table('categories):
>> Field('title', type='string'))
>>
>> db.define_table('products'):
>> Field('code', type='string'),
>> Field('category', reference 'categories'))
>>
>> With groupby I obtain a good result.
>>
>> results = db(db.products).select(db.products.category, groupby=db.
>> products.category)
>>
>> But I need to order the results by the category title.
>>
>> If I do like that:
>> results = db(db.products).select(db.products.category, orderby=db.product
>> .category.title, groupby=db.products.category)
>>
>> Ticket is : 'Field' object has no attribute 'title'
>>
>> Is there a way to order these results, or make a query that selct only
>> the categories in db.categories that are in db.products ?
>>
>> Il giorno giovedì 9 giugno 2016 12:56:57 UTC+2, tim.n...@conted.ox.ac.uk
>> ha scritto:
>>>
>>> Looks like you want a subquery. You'll need to decide which of the
>>> items to choose when you have a given category_code.
>>> Say you want the first item with a given category code:
>>>
>>> sub_query = db()._select(db.products.id.min(), groupby=db.products.
>>> category_code)
>>> results = db(db.products.id.belongs(sub_query)).select()
>>>
>>>
>>> On Wednesday, 8 June 2016 15:10:33 UTC+1, Gael Princivalle wrote:
>>>
>>>> Hello.
>>>>
>>>> Is there a way to select some rows without duplicates for a specific
>>>> field ?
>>>>
>>>> MODEL:
>>>> db.define_table('products'):
>>>> Field('code', type='string'),
>>>> Field('category_code', type='integer'))
>>>>
>>>> ROWS:
>>>> code / category_code
>>>> A1125 / 3
>>>> C2214 / 2
>>>> D235 / 3
>>>> Z886 / 1
>>>>
>>>> I would like to make a select that give this result:
>>>> code / category_code
>>>> A1125 / 3
>>>> C2214 / 2
>>>> Z886 / 1
>>>>
>>>> Someone have an idea ?
>>>>
>>>> Thanks.
>>>>
>>>>
>>>>
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