open-law/app/models/book_version.py

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from datetime import datetime
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from app import db
from app.models.utils import BaseModel
class BookVersion(BaseModel):
__tablename__ = "book_versions"
# need to redeclare id to use it in the derivative relationship
id = db.Column(db.Integer, primary_key=True)
semver = db.Column(db.String(1024), unique=False, nullable=False)
exported = db.Column(db.Boolean, default=False)
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updated_at = db.Column(db.DateTime, default=datetime.now)
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# Foreign keys
derivative_id = db.Column(db.Integer, db.ForeignKey("book_versions.id"))
book_id = db.Column(db.Integer, db.ForeignKey("books.id"))
# Relationships
book = db.relationship("Book", viewonly=True)
derivative = db.relationship("BookVersion", remote_side=[id])
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sections = db.relationship("Section", viewonly=True)
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def __repr__(self):
return f"<{self.id}: {self.semver}>"