Issue submitted
https://code.google.com/p/web2py/issues/detail?id=1803
Sorry for the delay.
Quinta-feira, 5 de Dezembro de 2013 20:05:38 UTC, Leonel Câmara escreveu:
>
> If I have this in my DB:
>
> db = DAL('sqlite://storage.sqlite', check_reserved=[])
>
> db.define_table('test_table',
> Field('value'),
> )
>
> if db(db.test_table.id > 0).count() == 0:
> db.test_table.bulk_insert([{'value': 'one'}, {'value': 'two'},
> {'value': 'three'}, {'value': 'four'}, {'value': 'five'}])
>
> And this in my default controller
>
> def index():
> test_table_rows = db(db.test_table.id>0).select(cache=(cache.ram,
> 1800), cacheable=True)
> for record in test_table_rows:
> # Suppose I want to change the way the values are returned, here
> I'm adding a # but I could be
> # doing something useful like turning them into an URL()
> record.value = record.value + '#'
> return {'values': test_table_rows}
>
> Then go to /default/index.json and keep refreshing. What you end up
> getting will be something like:
>
> {"values": [{"id": 1, "value": "one##########################"}, {"id": 2,
> "value": "two##########################"}, {"id": 3, "value":
> "three##########################"}, {"id": 4, "value":
> "four##########################"}, {"id": 5, "value":
> "five##########################"}]}
>
>
>
> I find this behavior to be quite unexpected as I would think that the cached
> rows would not be affected, what I would expect would be for the select to
> always return me exactly the same cached Rows. This makes cacheable=True very
> dangerous in a way that reminds me of using mutables as default function
> arguments.
>
>
--
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