It is a different version of Sqlalchemy.
Also the project is written in Pylons so we are upgrading that which
requries SQLAlchemy 0.6.x.
Is there some book or reading material you can point me to pleas??
Thanks.
On Sat, Apr 30, 2011 at 12:36 PM, Michael Bayer <mike...@zzzcomputing.com>wrote:
> this has to do with how the Session is configured and if its linked to an
> engine.
>
> Curious, the "upgrade" happening here is strictly because a newer version
> of Debian has a different version of SQLAlchemy ? It would be really,
> really preferable if you could run the specific version of SQLAlchemy the
> app was written against, we change the API with each 0.x version. This
> does however mean you'd need to install SQLAlchemy using standard Python
> setuptools methodologies and not via a deb package. The effort you're
> making here would be towards porting the app to 0.5.8 based on your trace
> below...we're already up to 0.7. With a straight install, it only means
> SQLAlchemy would be installed under "site-packages" instead of
> "dist-packages".
>
>
> On Apr 29, 2011, at 8:54 PM, Mihir Sevak wrote:
>
> Actually to be specific I am getting following error now
>
>
> Errorlog
>
> *****************************************************************************************
> File '/home/mihir/development/web/web/controllers/real.py', line 187 in
> search
> total_matches = matching_products.count()
> File
> '/usr/local/lib/python2.6/dist-packages/SQLAlchemy-0.5.8-py2.6.egg/sqlalchemy/orm/query.py',
> line 1552 in count
> should_nest = should_nest[0]
> File
> '/usr/local/lib/python2.6/dist-packages/SQLAlchemy-0.5.8-py2.6.egg/sqlalchemy/orm/query.py',
> line 1583 in _col_aggregate
> return self.session.scalar(s, params=self._params,
> mapper=self._mapper_zero())
> File
> '/usr/local/lib/python2.6/dist-packages/SQLAlchemy-0.5.8-py2.6.egg/sqlalchemy/orm/session.py',
> line 758 in scalar
> return self.execute(clause, params=params, mapper=mapper, **kw).scalar()
> File
> '/usr/local/lib/python2.6/dist-packages/SQLAlchemy-0.5.8-py2.6.egg/sqlalchemy/orm/session.py',
> line 750 in execute
> engine = self.get_bind(mapper, clause=clause, **kw)
> File
> '/usr/local/lib/python2.6/dist-packages/SQLAlchemy-0.5.8-py2.6.egg/sqlalchemy/orm/session.py',
> line 888 in get_bind
> ', '.join(context)))
> UnboundExecutionError: Could not locate a bind configured on mapper
> Mapper|Product|products, SQL expression or this Session
>
>
> *******************************************************************************************************
>
> On Fri, Apr 29, 2011 at 8:32 PM, Mihir Sevak <mihir.se...@gmail.com>wrote:
>
>> Hi Mike thanks very much for taking time to respond to my question.
>>
>> After taking the alias away it stopped complaining about that perticular
>> line. But the function which was calling this function did not get query
>> results. So tried to print "q" itself and it was the query-line itself
>> instead
>> of results.
>>
>> Something like
>>
>> "SELECT xXXX DESC"
>>
>> Is there some change in the way to read the results from "q" object?
>> Because I have not changed a single letter of the code and what work
>> on other platform doesn't work here. So i am confused.
>>
>>
>> Thanks for your help.
>>
>>
>> On Fri, Apr 29, 2011 at 8:13 PM, Michael Bayer
>> <mike...@zzzcomputing.com>wrote:
>>
>>>
>>> On Apr 29, 2011, at 1:55 PM, Mihir wrote:
>>>
>>> > @classmethod
>>> > def fulltext_adv(cls, search_string, raw_search=''):
>>> > q = Session.query(cls)
>>> > text_query = func.to_tsquery(search_string).alias('query')
>>> > q = q.filter(cls.tsv.op('@@')(text_query))
>>> > if raw_search:
>>> > q = q.order_by(Product.name.op('ilike')(raw_search +
>>> > '%').desc())
>>> > q = q.order_by(sa.desc(func.ts_rank_cd(cls.tsv,
>>> > sa.literal_column('query'), 1)))
>>> > return q
>>> >
>>> > AttributeError: Element to_tsquery(:to_tsquery_1) does not support
>>> > 'as_scalar()'
>>>
>>> you probably don't want to call "alias('query')" on the func.to_tsquery()
>>> object. that turns it into an aliased SELECT construct that isn't
>>> particularly appropriate to pass to an operator ('@@' above).
>>>
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>>>
>>
>>
>> --
>> "How can anything be impossible when impossible itself says I M
>> Possible???"
>> Mihir
>>
>
>
>
> --
> "How can anything be impossible when impossible itself says I M
> Possible???"
> Mihir
>
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