# models.py from database.database import db class DownloadedFile(db.Model): id = db.Column(db.Integer, primary_key=True) name = db.Column(db.String(255), unique=True, nullable=False) path = db.Column(db.String(255), nullable=True) # 允许 NULL 值 downloaded = db.Column(db.Boolean, default=False, nullable=False) def __repr__(self): return f''