Thank you very much!
I'll test it ASAP :)
2012/2/8 Michael Bayer mike...@zzzcomputing.com
I have good news on this front, in that I've nailed down how this will
work, including a patch that gets this basic thing working as a proof of
concept. However, the issue of being able to distinguish
Uhm, the test I attached on previous mail fails using this branch:
$ python test_relationships.py
Traceback (most recent call last):
File test_relationships (1).py, line 53, in module
c1 = Company()
File string, line 2, in __init__
File
I aam having an issue defining a 2nd foreign key constraint on 2
derived classes of a base class that uses a self referential join.
Base class:ContentBase
class ContentBase(Base):
__tablename__ = 'content'
__mapper_args__ = {'polymorphic_on': ctype,
'polymorphic_identity':'contentbase'}
Great, thanks for this, I will definitely play around with this.
Lots of great tools and links here!
However, I do have a remark for Mike:
you suggest
('%' + literal(custom_string) + '%').ilike('%' + MyClass.column +
'%')
While this probably works for PGSQL (haven't tested though), in sqlite
it
OK, a misunderstanding, the proof of concept is working as of a specific
version (rf41aa3ad1da9) - if you've just checked out the branch then you're
seeing a refactoring of code which is in flux, and that stack trace is
specifically failing on new code that isn't actually doing anything other
I have an ORM object that gets loaded once during program run and never changes.
sess = Session()
unchanging = sess.query(Unchanging).get(1)
sess.close() # it is now detached
I then need to tell other objects about about it, having a many-to-one
relationship to 'unchanging':
sess1 =
Hi,
I am using some custom types which just about work, i.e. I just have
an issue when I do this type of query.
result = result.filter(db.Drinkinfo.namesandvar.startswith('cloudy'))
It throws the following exception, which is due to my custom type not
being correctly setup.
On Feb 8, 2012, at 9:39 AM, cropr wrote:
I aam having an issue defining a 2nd foreign key constraint on 2
derived classes of a base class that uses a self referential join.
Base class:ContentBase
class ContentBase(Base):
__tablename__ = 'content'
__mapper_args__ =
On Feb 8, 2012, at 10:40 AM, werner wrote:
Hi,
I am using some custom types which just about work, i.e. I just have an
issue when I do this type of query.
result = result.filter(db.Drinkinfo.namesandvar.startswith('cloudy'))
It throws the following exception, which is due to my
On Feb 8, 2012, at 10:29 AM, Michael Hipp wrote:
I have an ORM object that gets loaded once during program run and never
changes.
sess = Session()
unchanging = sess.query(Unchanging).get(1)
sess.close() # it is now detached
I then need to tell other objects about about it, having
I'm trying to deploy an sqlalchemy+ bottle.py web app to google app
engine. I saw they also have an sql like backend so I guess sqlalchemy
could work with Gae but I'm not sure
would It support sqlalchemy from the box? or how should I the
application it if needed?
I know this was asked before, but
Thanks for the swift reply. Eventually I solved it, by the hint in
your answer about the relationshop referring to no column. Replacing
parent_id = Column(Integer, ForeignKey('content.id'))
in the base class to
parent_id = Column(Integer, ForeignKey(id))
made the trick. It is
On 2012-02-08 9:50 AM, Michael Bayer wrote:
unchanging = sess1.merge(unchanging, dont_load=True)
Thanks, Michael this seems to do what I need.
But I notice in the docs the kwarg appears to be 'load=False'. Am I looking at
the wrong thing?
Perfect! Works great. Thanks for the help.
-Dave
On Feb 7, 8:51 pm, Michael Bayer mike...@zzzcomputing.com wrote:
On Feb 7, 2012, at 3:31 PM, Dave wrote:
I've got a class Keyword that is many to many to itself through a
mapped association table. The association table tracks which keyword
oh right, the name changed at some point, that's correct.
On Feb 8, 2012, at 3:07 PM, Michael Hipp wrote:
On 2012-02-08 9:50 AM, Michael Bayer wrote:
unchanging = sess1.merge(unchanging, dont_load=True)
Thanks, Michael this seems to do what I need.
But I notice in the docs the kwarg
I haven't been entirely following along with what you and Mike have been
talking about, but one final suggestion: If your problem is something to with
LIKE only working in one direction, you could always do the first filter in the
query, and then filter those results in the other direction in
Hi,
I am trying to create a simple many-to-many relationship using
PostgreSQL in a specific schema ('cards'). I do it like this:
class BaseObject(object):
id = Column(Integer, primary_key=True)
date_created = Column(DateTime)
date_modified = Column(DateTime)
collection_cards =
Have you tried changing the order so that Card is defined before
collection_cards? Obviously you're passing 'cards.id' as a string so that the
order doesn't matter, but have you tried it anyway?
-Original Message-
From: sqlalchemy@googlegroups.com [mailto:sqlalchemy@googlegroups.com]
Yes, I've tried that. It does not help. Btw. isn't the whole thing
executed/resolved on base.metadata.create_all(engine)?
Stefan
On Feb 9, 12:24 am, Jackson, Cameron
cameron.jack...@thalesgroup.com.au wrote:
Have you tried changing the order so that Card is defined before
collection_cards?
On Feb 8, 2012, at 6:06 PM, Stefan Urbanek wrote:
Hi,
I am trying to create a simple many-to-many relationship using
PostgreSQL in a specific schema ('cards'). I do it like this:
class BaseObject(object):
id = Column(Integer, primary_key=True)
date_created = Column(DateTime)
One of my tables used to have something like:
role = Column(Enum('user', 'admin', name = User_Roles))
Now I want to change it to:
role = Column(Enum('user', 'superuser', name = User_Roles))
But I can't figure out how to change the enum values in the database. I've
tried dropping the
On 02/08/2012 07:29 PM, Jackson, Cameron wrote:
One of my tables used to have something like:
role = Column(Enum('user', 'admin', name = User_Roles))
Now I want to change it to:
role = Column(Enum('user', 'superuser', name = User_Roles))
But I can't figure out how to
(Mike: my problem is solved, but please read my final sentence for an
enhancement request)
I'm guessing the old User_Roles type still exists in the database. You can
drop it with DROP TYPE User_Roles.
Yes, this is what I figured was happening, I wasn't sure how to get rid of it
though
Yeah, this will keep coming back as long as people work with schemas,
which use fixed length character types (CHAR, NCHAR), which is
probably for another 30 years. May I propose an enhancement to String
(and as a result to CHAR, NCHAR and Unicode) to take trim=False
keyword and effect a TRIM()
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