First, does it work when using the date, time and datetime objects
from Python's builtin datetime module? As I understand it, mx.DateTime
and the Python datetime module do not have the same API, and I believe
SQLAlchemy is designed for the Python datetime module rather than for
mx.DateTime.
on linux using the datetime classes works fine with
t.date = datetime.date(2004,12,30)
t.last_entry = datetime.time(23,55,56,345)
but it does not work on windows. On win it seems to need the mx
classes. So its really weird because on linux only datetime works and
on windows only mx works :(
On Windows I get the following stacktrace:
Traceback (most recent call last):
File "test2.py", line 33, in ?
objectstore.flush()
File "build\bdist.win32\egg\sqlalchemy\mapping\objectstore.py", line
260, in flush
File "build\bdist.win32\egg\sqlalchemy\mapping\objectstore.py", line
81, in flush
File "build\bdist.win32\egg\sqlalchemy\mapping\unitofwork.py", line
249, in flush
File "build\bdist.win32\egg\sqlalchemy\mapping\unitofwork.py", line
374, in execute
File "build\bdist.win32\egg\sqlalchemy\mapping\unitofwork.py", line
527, in execute
File "build\bdist.win32\egg\sqlalchemy\mapping\mapper.py", line 616,
in save_obj
File "build\bdist.win32\egg\sqlalchemy\sql.py", line 473, in execute
File "build\bdist.win32\egg\sqlalchemy\sql.py", line 378, in execute
File "build\bdist.win32\egg\sqlalchemy\sql.py", line 355, in execute
File "build\bdist.win32\egg\sqlalchemy\engine.py", line 645, in
execute_compiled
File "build\bdist.win32\egg\sqlalchemy\engine.py", line 542, in
_process_defaults
File "build\bdist.win32\egg\sqlalchemy\sql.py", line 271, in __getitem__
File "build\bdist.win32\egg\sqlalchemy\sql.py", line 692, in typeprocess
File "build\bdist.win32\egg\sqlalchemy\databases\postgres.py", line
82, in convert_bind_param
TypeError: argument 1 must be DateTime, not datetime.date
Third, I notice you're using a Time data type for the last_entry
column -- which only stores time-of-day. Don't you want a DateTime
data type for that column instead?
yes I want to store only the time, so it was my intention to have a
date and a time column
ALex.
On 5/21/06, Robin Munn <[EMAIL PROTECTED]> wrote:
On 5/21/06, Alex Greif <[EMAIL PROTECTED]> wrote:
> The following code works on windows but crashes on linux. It uses SA 0.1.7.
> I am not sure whether the first import line makes problems, but as I
> said it works fine on windows. Both running Python-2.4.2
>
> any help is appreciated
>
> Alex.
>
>
> ####### code ###########
>
> import mx.DateTime.DateTime as mxDateTime
> from sqlalchemy import *
>
> e = create_engine("postgres://database=test", echo=True)
>
> test = Table("test", e,
> Column("id", Integer, primary_key=True),
> Column("date", Date),
> Column("last_entry", Time),
> )
> class Test(object):
> pass
> Test.mapper = mapper(Test, test)
>
> try:
> test.drop()
> except:
> pass
> test.create()
>
> t = Test()
> t.date = mxDateTime(2004,12,30)
> t.last_entry = mxDateTime(2004,12,31,23,55,56.345)
>
> objectstore.flush()
I have three questions about your code.
First, does it work when using the date, time and datetime objects
from Python's builtin datetime module? As I understand it, mx.DateTime
and the Python datetime module do not have the same API, and I believe
SQLAlchemy is designed for the Python datetime module rather than for
mx.DateTime.
Second, if the Python datetime module works, is there a particular
reason why you need to use mx.DateTime? It would probably be simpler
to use the builtin module, since that's one less module dependency you
have to install when you deploy your application.
Third, I notice you're using a Time data type for the last_entry
column -- which only stores time-of-day. Don't you want a DateTime
data type for that column instead?
Let me know if changing last_entry to a DateTime type, and/or using
Python datetime objects instead of mx.DateTime, solves your problem.
--
Robin Munn
[EMAIL PROTECTED]
GPG key 0xD6497014
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