a6decbb313
Changed license to AGPLv3, "finished" console command framework (for now?), and added initial db/lib/pyramid/wx subpackages - though those are not yet well tested.
109 lines
3.8 KiB
Python
109 lines
3.8 KiB
Python
#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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################################################################################
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#
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# edbob -- Pythonic Software Framework
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# Copyright © 2010-2012 Lance Edgar
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#
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# This file is part of edbob.
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#
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# edbob is free software: you can redistribute it and/or modify it under the
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# terms of the GNU Affero General Public License as published by the Free
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# Software Foundation, either version 3 of the License, or (at your option)
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# any later version.
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#
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# edbob is distributed in the hope that it will be useful, but WITHOUT ANY
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# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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# FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for
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# more details.
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#
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# You should have received a copy of the GNU Affero General Public License
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# along with edbob. If not, see <http://www.gnu.org/licenses/>.
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#
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################################################################################
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"""
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``edbob.db.model`` -- Core Schema Definition
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"""
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from sqlalchemy import *
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from edbob import get_uuid
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def get_metadata(*args, **kwargs):
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"""
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Returns the core ``edbob`` schema definition.
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Note that when :func:`edbob.init()` is called, the ``sqlalchemy.MetaData``
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instance which is returned from this function will henceforth be available
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as ``edbob.metadata``. However, ``edbob.init()`` may extend
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``edbob.metadata`` as well, depending on which extensions are activated
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within the primary database.
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This function then serves two purposes: First, it provides the core
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metadata instance. Secondly, it allows edbob to always know what its core
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schema looks like, as opposed to what's held in the current
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``edbob.metadata`` instance, which may have been extended locally. (The
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latter use is necessary in order for edbob to properly manage its
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extensions.)
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All arguments (positional and keyword) are passed directly to the
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``sqlalchemy.MetaData()`` constructor.
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"""
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metadata = MetaData(*args, **kwargs)
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active_extensions = Table(
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'active_extensions', metadata,
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Column('name', String(50), primary_key=True),
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)
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def get_person_display_name(context):
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first_name = context.current_parameters['first_name']
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last_name = context.current_parameters['last_name']
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if not (first_name or last_name):
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return None
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return '%(first_name)s %(last_name)s' % locals()
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people = Table(
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'people', metadata,
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Column('uuid', String(32), primary_key=True, default=get_uuid),
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Column('first_name', String(50)),
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Column('last_name', String(50)),
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Column('display_name', String(100), default=get_person_display_name),
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)
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permissions = Table(
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'permissions', metadata,
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Column('role_uuid', String(32), ForeignKey('roles.uuid'), primary_key=True),
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Column('permission', String(50), primary_key=True),
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)
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roles = Table(
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'roles', metadata,
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Column('uuid', String(32), primary_key=True, default=get_uuid),
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Column('name', String(25), nullable=False, unique=True),
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)
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settings = Table(
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'settings', metadata,
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Column('name', String(255), primary_key=True),
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Column('value', Text),
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)
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users = Table(
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'users', metadata,
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Column('uuid', String(32), primary_key=True, default=get_uuid),
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Column('username', String(25), nullable=False, unique=True),
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Column('person_uuid', String(32), ForeignKey('people.uuid')),
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)
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users_roles = Table(
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'users_roles', metadata,
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Column('uuid', String(32), primary_key=True, default=get_uuid),
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Column('user_uuid', String(32), ForeignKey('users.uuid')),
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Column('role_uuid', String(32), ForeignKey('roles.uuid')),
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)
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return metadata
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