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""" |
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byceps.services.shop.catalog.models |
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
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:Copyright: 2006-2020 Jochen Kupperschmidt |
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:License: Modified BSD, see LICENSE for details. |
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""" |
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from sqlalchemy.ext.orderinglist import ordering_list |
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from ....database import db, generate_uuid |
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from ....util.instances import ReprBuilder |
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from ..article.transfer.models import ArticleNumber |
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from .transfer.models import CatalogID, CollectionID |
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class Catalog(db.Model): |
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"""A catalog to offer articles.""" |
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__tablename__ = 'shop_catalogs' |
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id = db.Column(db.UnicodeText, primary_key=True) |
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title = db.Column(db.UnicodeText, unique=True, nullable=False) |
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def __init__(self, catalog_id: CatalogID, title: str) -> None: |
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self.id = catalog_id |
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self.title = title |
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def __repr__(self) -> str: |
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return ReprBuilder(self) \ |
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.add_with_lookup('id') \ |
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.build() |
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View Code Duplication |
class Collection(db.Model): |
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"""A group of articles inside of catalog.""" |
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__tablename__ = 'shop_catalog_collections' |
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__table_args__ = ( |
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db.UniqueConstraint('catalog_id', 'title'), |
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) |
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id = db.Column(db.Uuid, default=generate_uuid, primary_key=True) |
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catalog_id = db.Column(db.UnicodeText, db.ForeignKey('shop_catalogs.id'), index=True, nullable=False) |
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title = db.Column(db.UnicodeText, nullable=False) |
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position = db.Column(db.Integer, nullable=False) |
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catalog = db.relationship( |
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Catalog, |
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backref=db.backref( |
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'collections', |
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order_by=position, |
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collection_class=ordering_list('position', count_from=1), |
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), |
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) |
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def __init__(self, catalog_id: CatalogID, title: str) -> None: |
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self.catalog_id = catalog_id |
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self.title = title |
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def __repr__(self) -> str: |
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return ReprBuilder(self) \ |
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.add_with_lookup('catalog_id') \ |
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.add_with_lookup('title') \ |
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.build() |
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class CatalogArticle(db.Model): |
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"""The assignment of an article to a collection.""" |
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__tablename__ = 'shop_catalog_articles' |
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__table_args__ = ( |
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db.UniqueConstraint('collection_id', 'article_number'), |
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) |
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id = db.Column(db.Uuid, default=generate_uuid, primary_key=True) |
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collection_id = db.Column(db.Uuid, db.ForeignKey('shop_catalog_collections.id'), index=True, nullable=False) |
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article_number = db.Column(db.UnicodeText, db.ForeignKey('shop_articles.item_number'), index=True, nullable=False) |
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position = db.Column(db.Integer, nullable=False) |
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collection = db.relationship( |
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Collection, |
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backref=db.backref( |
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'catalog_articles', |
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order_by=position, |
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collection_class=ordering_list('position', count_from=1), |
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), |
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) |
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def __init__( |
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self, collection_id: CollectionID, article_number: ArticleNumber |
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) -> None: |
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self.collection_id = collection_id |
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self.article_number = article_number |
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byceps /
byceps
