django_sqlalchemy missing DJANGO_SQLALCHEMY_DBURI causes dump

[GoogleCodeExporter]

If the user specifies:
{{{
from django_sqlalchemy import models
}}}

but does not set the a DJANGO_SQLALCHEMY_DBURI settings in the settings.py 
module the 
following dump occurs. Look into provided a cleaner message that indicates the 
problem:

{{
mtrier@michael-triers-computer:~/Development/django-sqlalchemy/original$ 
./manage.py 
syncdb
Traceback (most recent call last):
  File "./manage.py", line 11, in <module>
    execute_manager(settings)
  File "/Library/Python/2.5/site-packages/django/core/management/__init__.py", line 272, in 
execute_manager
    utility.execute()
  File "/Library/Python/2.5/site-packages/django/core/management/__init__.py", line 219, in 
execute
    self.fetch_command(subcommand).run_from_argv(self.argv)
  File "/Library/Python/2.5/site-packages/django/core/management/base.py", line 72, in 
run_from_argv
    self.execute(*args, **options.__dict__)
  File "/Library/Python/2.5/site-packages/django/core/management/base.py", line 85, in 
execute
    self.validate()
  File "/Library/Python/2.5/site-packages/django/core/management/base.py", line 112, in 
validate
    num_errors = get_validation_errors(s, app)
  File "/Library/Python/2.5/site-packages/django/core/management/validation.py", line 28, in 
get_validation_errors
    for (app_name, error) in get_app_errors().items():
  File "/Library/Python/2.5/site-packages/django/db/models/loading.py", line 126, in 
get_app_errors
    self._populate()
  File "/Library/Python/2.5/site-packages/django/db/models/loading.py", line 55, in _populate
    self.load_app(app_name, True)
  File "/Library/Python/2.5/site-packages/django/db/models/loading.py", line 70, in load_app
    mod = __import__(app_name, {}, {}, ['models'])
  File "/Users/mtrier/Development/django-sqlalchemy/original/../original/bar/models.py", line 
2, in <module>
    from django_sqlalchemy import models
  File "/Users/mtrier/Development/django-sqlalchemy/django_sqlalchemy/models/__init__.py", 
line 5, in <module>
    from django_sqlalchemy.models.fields.related import ForeignKey, ManyToManyField
  File "/Library/Python/2.5/site-packages/django_sqlalchemy/models/fields/related.py", line 2, 
in <module>
    from django_sqlalchemy.backend import metadata, Session
  File "/Users/mtrier/Development/django-sqlalchemy/django_sqlalchemy/backend/__init__.py", 
line 2, in <module>
    from base import engine, Session, metadata
  File "/Users/mtrier/Development/django-sqlalchemy/django_sqlalchemy/backend/base.py", 
line 19, in <module>
    engine = create_engine(settings.DJANGO_SQLALCHEMY_DBURI, convert_unicode=True)
  File "/Library/Python/2.5/site-packages/django/conf/__init__.py", line 32, in __getattr__
    return getattr(self._target, name)
AttributeError: 'Settings' object has no attribute 'DJANGO_SQLALCHEMY_DBURI'
}}

Original issue reported on code.google.com by mtr...@gmail.com on 5 Apr 2008 at 10:08