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# models.py
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from flask_sqlalchemy import SQLAlchemy
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db = SQLAlchemy()
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class User(db.Model):
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id = db.Column(db.Integer, primary_key=True)
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username = db.Column(db.String(80), unique=True, nullable=False)
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role = db.Column(db.String(20), nullable=False) # 角色字段，例如 '指挥者' 或 '成员' |
