执行迁移：python manage.py makemigrations appname

报：No changes detected in app ‘appname‘

python manage.py migrate

报No migrations to apply.

检查settle中有app

原因在于model层中的init文件，手动添加一个from .interface import Interface   即执行成功

django在model里面建立表之后执行数据迁移 报错No changes detected No migrations to apply.