【python】db.Column(db.Integer, primary_key=True, autoincrement=True)

db.Column(db.Integer, primary_key=True, autoincrement=True)
学习：
1.python中实现创建数据库
一般路径：models/servicesuser.py
核心语句：db.Column(db.String(100))

class 表名称(db.Model):
    __tablename__ = "表名称"
    id = db.Column(db.Integer, primary_key=True, autoincrement=True)
    user = db.Column(db.String(100))
    environment = db.Column(db.String(100))
    content = db.Column(db.String(100))
    add_time = db.Column(db.DateTime, default=datetime.datetime.now,
                         onupdate=datetime.datetime.now)
    __mapper_args__ = {
        "order_by": add_time.desc()
    }

2.python中实现创建数据表
一般路径：db_create.py
核心语言：db.create_all()
检查：运行脚本后，检查数据库表是否创建表成功

"""
创建数据库及初始化
"""
if __name__ == '__main__':
    db.create_all()

3.支持插入/查询数据库函数
一般路径：models/dao/servicesuser.py
功能：增加、查询

@lock_mysql
def add_servicesuser_usergetinfo(**kw):
    """记录用户查询uid"""
    add_usergetinfo= 表名称(**kw)
    db.session.add(add_usergetinfo)


@lock_mysql
def get_servicesuser_userinfo_actions(page_index=0, page_size=10):
    """查询用户查询uid操作"""
    q = 表名称.query
    count = q.count()
    # 为0时不分页
    if page_index:
        # error_out False: 当page_index超过最大页数时阻止抛出异常
        result = q.paginate(page=page_index, per_page=page_size, error_out=False).items
    else:
        result = q.all()
    return count, [Dict({
        "id": info.id,
        "user": info.user,
        "environment": info.environment,
        "content": info.content,
        "add_time": str(info.add_time),

    }) for info in result]

4.接口支持操作数据库函数
操作路径：application/servicesuser/views.py
核心：
ThreadPoolExecutor
submit

t = ThreadPoolExecutor(max_workers=3)
t.submit(add_servicesuser_usergetinfo,
         **{
             "user": data.get("user"),
             "environment": data.get("environment"),
             "content": f"uid={uid}"
         })
t.shutdown(False)

5.请求接口获取数据库返回
application/servicesuser/views.py

class UserGetinfoActionsView(MethodView):
    """
    获取用户查询uid的操作记录
    """
    @staticmethod
    # @app.base_action()
    def post():
        data = request.json
        count, result = get_servicesuser_userinfo_actions(
            data.get("page_index"),
            data.get("page_size")
        )
        addgoldactions_dict = {
            "code": 20000,
            "data": result,
            "total": count
        }
        return jsonify(addgoldactions_dict)