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30 lines
1.0 KiB
Python
30 lines
1.0 KiB
Python
"""Модуль DB-моделей книг"""
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from typing import TYPE_CHECKING, List
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from sqlalchemy import Column, String
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from sqlmodel import Field, Relationship
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from library_service.models.dto.book import BookBase
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from library_service.models.db.links import AuthorBookLink, GenreBookLink
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from library_service.models.enums import BookStatus
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if TYPE_CHECKING:
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from .author import Author
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from .genre import Genre
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class Book(BookBase, table=True):
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"""Модель книги в базе данных"""
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id: int | None = Field(default=None, primary_key=True, index=True)
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status: BookStatus = Field(
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default=BookStatus.ACTIVE,
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sa_column=Column(String, nullable=False, default="active")
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)
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authors: List["Author"] = Relationship(
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back_populates="books", link_model=AuthorBookLink
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)
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genres: List["Genre"] = Relationship(
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back_populates="books", link_model=GenreBookLink
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)
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loans: List["BookUserLink"] = Relationship(sa_relationship_kwargs={"cascade": "all, delete"})
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