Hello Massimo,
I'm using web2py version 1.83.2.
When I define the tables in shell-mode, everything looks fine:
python web2py.py -S aubop -M
>>> db = DAL('sqlite://aubop.db')
>>> db.define_table('track', Field('title'), Field('artist'), Field('length'),
>>> Field('filepath'))
<Table {'ALL': <gluon.sql.SQLALL object at 0x4344f50>, [...]
>>> db.define_table('album', Field('title'), Field('artist'), Field('tracks',
>>> 'list:reference track'), Field('currentTrack', 'reference track'),
>>> Field('currentPlaybackTime'), Field('rating', 'integer'))
<Table {'rating': <gluon.sql.Field object at 0x434b290>, [...]
>>> db.tables
['track', 'album']
I then tried to log the output of db.tables immediatelly after the two
db.define_table()s in the model-file "database.py":
db = DAL('sqlite://aubop.db')
db.define_table('track', Field('title'), Field('artist'),
Field('length'), Field('filepath'))
db.define_table('album', Field('title'), Field('artist'),
Field('tracks', 'list:reference track'), Field('currentTrack',
'reference track'), Field('currentPlaybackTime'), Field('rating',
'integer'))
f = open("test.log", "w")
for d in db.tables:
f.write(d)
Unfortunately the created file is empty. Do you have any idea why?
Regards
Benjamin
On 30 Aug., 20:38, mdipierro <mdipie...@cs.depaul.edu> wrote:
> which web2py version are you using?
>
> what you get if you print db.tables immediately after
> db.define_table()
>
> On Aug 30, 10:33 am, Benjamin Goll <beni.g...@googlemail.com> wrote:
>
> > Hello Massimo,
>
> > thank you for your fast reply!
>
> > Honestly I don't think that this is related to my problem since I only
> > tried to demonstrate my problem with this example.
>
> > If I define a table in a model, I should be able to access this table
> > without any further configuration, right? So when I do the two
> > db.define_table()-statements (as shown in my first post), I should be
> > able to access the tables in a controller via db.album or db.track
> > respectively. Unfortunately this is not the case and results in a
> > KeyError. When I do db.tables in a controller, only the auth_*-tables
> > are listed.
>
> > Is there any possibility to see, if web2py fails while initializing
> > the db-object? Setting the debug-level to 0 seems not the help since
> > it does not list errors concerning the database.
>
> > Regards
>
> > Benjamin
>
> > On 30 Aug., 16:58, mdipierro <mdipie...@cs.depaul.edu> wrote:
>
> > > > >>> db = DAL('sqlite://aubop.db')
> > > > >>> db.tables
> > > > []
> > > > That's strange, isn't it?
>
> > > this is fine. In fact even if the tables are in db, web2py does not
> > > discover them. You still need db.define_table(...) to inform web2py
> > > about them.
>
> > > I cannot say about the problem with the app, but could it be related
> > > to this?
>
> > > Massimo
>
> > > On Aug 30, 7:56 am, Benjamin Goll <beni.g...@googlemail.com> wrote:
>
> > > > Hi there,
>
> > > > first of all I would like to thank you for this great software! It's
> > > > just so much fun to create powerful applications with it!
>
> > > > Unfortunately I ran into a really strange problem which I'm not able
> > > > to solve.
>
> > > > In the file models/database.py I define the following:
>
> > > > db = DAL('sqlite://aubop.db')
> > > > db.define_table('track', Field('title'), Field('artist'),
> > > > Field('length'), Field('filepath'))
> > > > db.define_table('album', Field('title'), Field('artist'),
> > > > Field('tracks', 'list:reference track'), Field('currentTrack',
> > > > 'reference track'), Field('currentPlaybackTime'), Field('rating',
> > > > 'integer'))
>
> > > > When I then try to access one of the two defined tables in a
> > > > controller, I receive a KeyError, telling me, that e.g. db.album
> > > > cannot be found.
> > > > When I open the database "aubop.db" manually via the commandline-
> > > > interface of sqlite3, I can see that the two tables have been created
> > > > in the database:
>
> > > > sqlite3 aubop.db
> > > > sqlite> .tables
> > > > album track
>
> > > > The sql.log also tells me that the tables ahve been created
> > > > successfully.
>
> > > > I then started web2py in the shell-mode ("python web2py.py -S aubop -
> > > > M"):
>
> > > > >>> db.tables
>
> > > > ['auth_user', 'auth_group', 'auth_membership', 'auth_permission',
> > > > 'auth_event']>>> db = DAL('sqlite://aubop.db')
> > > > >>> db.tables
>
> > > > []
>
> > > > That's strange, isn't it?
>
> > > > Is there anybody who could help me?
>
> > > > Btw. access to a different sqlite-database works like a charm in a
> > > > second application I've created earlier.
>
> > > > Thanks in advance!
>
> > > > Regards
>
> > > > Benjamin
