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models.py
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models.py
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from exts import db
from datetime import datetime
class UserModel(db.Model):
__tablename__ = "user"
id = db.Column(db.Integer, primary_key=True, autoincrement=True)
username = db.Column(db.String(100), nullable=False)
password = db.Column(db.String(300), nullable=False)
email = db.Column(db.String(100), nullable=False, unique=True)
join_time = db.Column(db.DateTime, default=datetime.now)
class EmailCaptchaModel(db.Model):
__tablename__ = "eamil_captcha"
id = db.Column(db.Integer, primary_key=True, autoincrement=True)
email = db.Column(db.String(100), nullable=False)
captcha = db.Column(db.String(100), nullable=False)
# used = db.Column(db.Boolean, default=False)
# 问答的数据库
class QuestionModel(db.Model):
__tablename__ = "question"
id = db.Column(db.Integer, primary_key=True, autoincrement=True)
title = db.Column(db.String(100), nullable=False)
content = db.Column(db.Text, nullable=False)
create_time = db.Column(db.DateTime, default=datetime.now)
# 外键
author_id =db.Column(db.Integer, db.ForeignKey("user.id"))
author = db.relationship(UserModel, backref="questions")
# 定义答案的表
class AnswerModel(db.Model):
__tablename__ = "answer"
id = db.Column(db.Integer, primary_key=True, autoincrement=True)
content = db.Column(db.Text, nullable=False)
create_time = db.Column(db.DateTime, default=datetime.now)
# 外键
question_id =db.Column(db.Integer, db.ForeignKey("question.id"))
author_id = db.Column(db.Integer, db.ForeignKey("user.id"))
# 关系
# backref 反向应用
question = db.relationship(QuestionModel, backref=db.backref("answers", order_by=create_time.desc()))
author = db.relationship(QuestionModel, backref="answers")
# flask db init 只需要执行一次
# flask db migrate : 将orm模型生成迁移脚本
# flask db upgrade : 将迁移脚本映射到数据库中