openlp/openlp/plugins/custom/lib/db.py

70 lines
2.9 KiB
Python

# -*- coding: utf-8 -*-
##########################################################################
# OpenLP - Open Source Lyrics Projection #
# ---------------------------------------------------------------------- #
# Copyright (c) 2008-2022 OpenLP Developers #
# ---------------------------------------------------------------------- #
# This program is free software: you can redistribute it and/or modify #
# it under the terms of the GNU General Public License as published by #
# the Free Software Foundation, either version 3 of the License, or #
# (at your option) any later version. #
# #
# This program is distributed in the hope that it will be useful, #
# but WITHOUT ANY WARRANTY; without even the implied warranty of #
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the #
# GNU General Public License for more details. #
# #
# You should have received a copy of the GNU General Public License #
# along with this program. If not, see <https://www.gnu.org/licenses/>. #
##########################################################################
"""
The :mod:`db` module provides the database and schema that is the backend for
the Custom plugin
"""
from sqlalchemy import Column, Table, types
from sqlalchemy.orm import mapper
from openlp.core.common.i18n import get_natural_key
from openlp.core.lib.db import BaseModel, init_db
class CustomSlide(BaseModel):
"""
CustomSlide model
"""
# By default sort the customs by its title considering language specific characters.
def __lt__(self, other):
return get_natural_key(self.title) < get_natural_key(other.title)
def __eq__(self, other):
return get_natural_key(self.title) == get_natural_key(other.title)
def __hash__(self):
"""
Return the hash for a custom slide.
"""
return self.id
def init_schema(url):
"""
Setup the custom database connection and initialise the database schema
:param url: The database to setup
"""
session, metadata = init_db(url)
custom_slide_table = Table('custom_slide', metadata,
Column('id', types.Integer(), primary_key=True),
Column('title', types.Unicode(255), nullable=False),
Column('text', types.UnicodeText, nullable=False),
Column('credits', types.UnicodeText),
Column('theme_name', types.Unicode(128))
)
mapper(CustomSlide, custom_slide_table)
metadata.create_all(checkfirst=True)
return session