[ flask-migrate ] 记自己犯的一次低级错误

问题描述

从github上pull了别人的项目学习,项目用flask-migrate来迁移数据库。查看了一下,作者把数据库文件 app.db 删除了,不过migrations文件夹留着的,因此我只需要用命令 flask db migrate 和 flask db upgrade 来建立数据库文件就行了。执行过程中报错如下:

c:\users\administrator\appdata\local\programs\python\python37\lib\site-packages\flask_sqlalchemy\__init__.py:814: UserWarning: Neither SQLALCHEMY_DATABASE_URI nor SQLALCHEMY_BINDS is set. Defaulting SQLALCHEMY_DATABASE_URI to "sqlite:///:memory:".
  'Neither SQLALCHEMY_DATABASE_URI nor SQLALCHEMY_BINDS is set. '
c:\users\administrator\appdata\local\programs\python\python37\lib\site-packages\flask_sqlalchemy\__init__.py:835: FSADeprecationWarning: SQLALCHEMY_TRACK_MODIFICATIONS adds significant overhead and will be disabled by default in the future.  Set it to True or False to suppress this warning.
  'SQLALCHEMY_TRACK_MODIFICATIONS adds significant overhead and '
INFO  [alembic.runtime.migration] Context impl SQLiteImpl.
INFO  [alembic.runtime.migration] Will assume non-transactional DDL.
ERROR [root] Error: Target database is not up to date.

排查了各个方面,配置文件没问题,model没问题,__init__文件也没问题。

解决方案

醉了,执行flask db之前先导入项目啊!!!!!!!!!!!!!!

不然flask怎么知道你要执行哪个呢????????????????

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转载自www.cnblogs.com/remly/p/12213236.html