pyramid_sqlalchemy provides some basic glue to facilitate using SQLAlchemy with Pyramid.
SQLAlchemy relies on global state for a few things:
A MetaData instance which tracks all known SQL tables.
A base class for all models using the ORM.
A session factory.
Every application using SQLAlchemy must provides its own instance of these. This makes it hard create add-on packages that also use SQLAlchemy, since they either need to have their own SQLAlchemy state, which makes it hard to integrate them into your application, or they need to jump through multiple complex hoops to allow them share state with your application.
pyramid_sqlalchemy helps by providing a canonical location for the global SQLAlchemy state. In addition it provides a convenient way to configure SQLAlchemy in a Pyramid application.
from pyramid.config import Configurator
from pyramid_sqlalchemy import BaseObject
class MyModel(BaseObject):
__tablename__ = 'my_model'
...
def main():
config = Configurator()
# Configure SQLAlchemy using settings from the .ini file
config.include('pyramid_sqlalchemy')
...
return config.make_wsgi_app()
Changelog
1.5 - December 30, 2015
Fix a compatibility error with the DatabaseTestCase class which could break functional test setup.
Code reorganisation: move tests outside the package; there is no point in installing them.
1.4 - November 25, 2015
Revert naming convention change. This change broke all existing data models which did not supply a constraint name everywhere. This is especially bad for types which implicitly create unnamed constraints, such as booleans and enums on dialects that do not have native support.
1.3 - November 23, 2015
Configure a default naming convention, as recommended by alembic). Pull request 3 from Marcin Lulek.
Fix a broken import in pyramid_sqlalchemy’s own test when running on Python 3.
Allow overriding the database used for testing with the pytest --sql-url option when using the DatabaseTestCase test class. For non-pytest users support the DB_URI environment variable as well.
1.2.2 - September 11, 2014
Add dependency on mock for Python <3.3. This fixes import problems who try to import pyramid_sqlalchemy.testing in production code.
1.2.1 - September 1, 2014
Move pyramid to a test-only dependency. This makes it simpler to use pyramid_sqlalchemy in non-pyramid contexts.
1.2 - August 30, 2014
Use unittest.mock when available. This removes the mock dependency on Python 3.
Tests no longer need to mock out pyramid_sqlalchemy.includeme; this is now handled by DatabaseTestCase and the py.test fixtures.
Automatically make py.test fixtures available externally. This removes the need to copy & paste them over from the documentation.
Fix error on pytest fixture example.
Setup Travis to automatically run tests on CPython 2.6, CPython 2.7, CPython 3.3, CPython 3.4 and PyPy.
1.1 - July 14, 2014
Add missing schema to the Pyramid-URL in the package description. This broke ReST rendering on the PyPI page.
Add a new enable_sql_two_phase_commit() configuration directive to enable two-phase commit.
Enable foreign key constraint checking for SQLite in DatabaseTestCase.
Use SQLAlchemy events instead of ZopeTransactionExtension to handle integration of zope.sqlalchemy and SQLAlchemy.
1.0 - July 13, 2014
First release.
1 maintainer
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