mobile app database models admin_contests admin_dashboard admin_exams admin_posts admin_teacher_applications admin_users apply_contest apply_teacher base chat contest_detail contest_list exam_result forum notifications profile themes

models.py

@@ -68,6 +68,8 @@ class ContestApplication(db.Model):
     # 拒绝次数控制
     rejection_count = db.Column(db.Integer, default=0)  # 被拒绝次数
     last_rejected_at = db.Column(db.DateTime)  # 最后一次被拒绝的时间
+    # 杯赛图片
+    image = db.Column(db.String(255))  # 杯赛图片URL
 
     user = db.relationship('User', backref='contest_applications')
 
@@ -146,6 +148,7 @@ class Exam(db.Model):
     score_release_time = db.Column(db.DateTime, nullable=True)  # 成绩公布时间
     created_at = db.Column(db.DateTime, default=datetime.utcnow)
     status = db.Column(db.String(20), default='available')
+    visibility = db.Column(db.String(20), default='private')  # 'private' 或 'public'
 
     creator = db.relationship('User', back_populates='exams_created')
     submissions = db.relationship('Submission', back_populates='exam', lazy=True, cascade='all, delete-orphan')