54 lines
2.2 KiB
Python
54 lines
2.2 KiB
Python
from app import db
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from datetime import datetime
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class StudentEnrollment(db.Model):
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"""Association table: student (User) ↔ Commission enrollment managed by Bedelía."""
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__tablename__ = 'student_enrollments'
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id = db.Column(db.Integer, primary_key=True)
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student_id = db.Column(
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db.Integer,
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db.ForeignKey('users.id', ondelete='CASCADE'),
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nullable=False,
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index=True
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)
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commission_id = db.Column(
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db.Integer,
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db.ForeignKey('commissions.id', ondelete='CASCADE'),
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nullable=False,
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index=True
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)
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status = db.Column(db.String(20), nullable=False, default='activo') # activo | retirado | condicional
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enrolled_at = db.Column(db.DateTime, default=datetime.utcnow, nullable=False)
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updated_at = db.Column(db.DateTime, default=datetime.utcnow, onupdate=datetime.utcnow)
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notes = db.Column(db.Text, nullable=True)
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allow_same_day_exception = db.Column(db.Boolean, default=False, nullable=True)
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exception_reason = db.Column(db.String(255), nullable=True)
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# Unique constraint: a student can only be enrolled once per commission
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__table_args__ = (
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db.UniqueConstraint('student_id', 'commission_id', name='uq_student_commission'),
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)
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# Relationships
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student = db.relationship('User', backref=db.backref('enrollments', lazy='dynamic', cascade='all, delete-orphan'))
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commission = db.relationship('Commission', backref=db.backref('enrollments', lazy='dynamic', cascade='all, delete-orphan'))
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def to_dict(self):
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return {
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'id': self.id,
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'student_id': self.student_id,
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'student_name': self.student.name if self.student else None,
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'student_email': self.student.email if self.student else None,
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'commission_id': self.commission_id,
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'status': self.status,
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'enrolled_at': self.enrolled_at.isoformat() if self.enrolled_at else None,
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'notes': self.notes,
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'allow_same_day_exception': bool(self.allow_same_day_exception),
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'exception_reason': self.exception_reason
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}
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def __repr__(self):
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return f'<StudentEnrollment student={self.student_id} commission={self.commission_id} status={self.status}>'
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