On Sep 1, 1:39 pm, Kristian Thy <[EMAIL PROTECTED]> wrote:
> I'm giving TG2 (1.9.7a3) a whirl in a virtualenv after doing some
> stuff with TG1 a few months ago. Building my data model and trying to
> initialize the db as per the wiki example
> athttp://www.turbogears.org/2.0/docs/main/Wiki20/wiki20.html#initializi...,
> I get the following TraceBack:
>
> Traceback (most recent call last):
> File "initialize_db.py", line 13, in <module>
> advice = Advice("Don't eat raw chicken.")
> TypeError: __init__() takes exactly 1 argument (2 given)
>
> The code in my initialize_db.py:
>
> from mytestproject.model import DBSession, Advice, metadata
> from sqlalchemy import create_engine
>
> # Prepare the database connection
> engine = create_engine("postgres://...", echo=True)
> DBSession.configure(bind=engine)
>
> # Create the tables
> metadata.drop_all(engine)
> metadata.create_all(engine)
>
> # Create an object and set some data
> advice = Advice("Don't eat raw chicken.")
>
> # Save the object to the in memory DBSession
> DBSession.save(advice)
>
> # Use commit() to write all in-memory changes to the database.
> DBSession.commit()
>
> The relevant definition from my data model:
>
> advice_table = Table('advice', metadata,
> Column('advice_id', Integer, primary_key=True),
> Column('text', Unicode(255))
> )
>
> class Advice(object):
> """Just what the doctor ordered.
> """
> def __init__(self, text):
> self.text = text
>
> def __repr__(self):
> return '<Advice: text=%s>' % self.text
>
> DBSession.mapper(Advice, advice_table)
^^^^^^^^^^^^
You need to do:
from sqlalchemy.orm import mapper
mapper(Advice, advice_table)
Regards
Sanjiv
>
> If I instead do it like this in initialize_db.py:
>
> advice = Advice()
> advice.text = "Don't eat raw chicken."
>
> it works and is committed to the database. If I fire up an interactive
> Python shell and import my model, the first form works (i.e.
> Advice("Foo") works as intended). What am I doing wrong?
>
> \\kristian
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