运行model.py时报错：AttributeError: 'str' object has no attribute 'c'

来源：3-8 .管理员-登录日志-操作日志数据模型设计

精慕门0581346

2017-08-03

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精慕门0581346

提问者

2017-08-04

多谢老师。我还想问一下，用flask不能前后端分开学吗，只能全栈吗。。

rustgopy

精慕门0581346

同学你好，前后端可以分开的。在实际工作中，公司分为美工、前端开发人员、后端开发人员以及运维人员。后端主要负责定义API；前端主要负责前端开发，请求你封装好的API；美工主要负责素材制作；运维主要负责部署代码部署服务；本套课程主要是实战，前后端结合带同学们学习使用flask独立地做全栈开发包括前端+后端+运维。

2017-08-04

共2条回复

精慕门0581346

提问者

2017-08-03

Traceback (most recent call last):
File "C:/Users/智汇谷东/PycharmProjects/movie_web/app/models.py", line 45, in <module>
    class Tag(db.Model):
File "C:\Users\智汇谷东\movie\lib\site-packages\flask_sqlalchemy\__init__.py", line 602, in __init__
    DeclarativeMeta.__init__(self, name, bases, d)
File "C:\Users\智汇谷东\movie\lib\site-packages\sqlalchemy\ext\declarative\api.py", line 64, in __init__
    _as_declarative(cls, classname, cls.__dict__)
File "C:\Users\智汇谷东\movie\lib\site-packages\sqlalchemy\ext\declarative\base.py", line 88, in _as_declarative
    _MapperConfig.setup_mapping(cls, classname, dict_)
File "C:\Users\智汇谷东\movie\lib\site-packages\sqlalchemy\ext\declarative\base.py", line 103, in setup_mapping
    cfg_cls(cls_, classname, dict_)
File "C:\Users\智汇谷东\movie\lib\site-packages\sqlalchemy\ext\declarative\base.py", line 131, in __init__
    self._setup_table()
File "C:\Users\智汇谷东\movie\lib\site-packages\sqlalchemy\ext\declarative\base.py", line 400, in _setup_table
    if not table.c.contains_column(c):
AttributeError: 'str' object has no attribute 'c'

Process finished with exit code 1