django - pycharm : makemigrations and migrate ignore my changes

这是我一直在做的事情，我想这不是正确的解决方案:

修改我的模型

删除 db.sqlite3 文件

启动 makemigrations 然后 migrate

如果我 不 删除 db.sqlite3 文件，当我尝试运行 makemigrations 然后 migrate 时，我有这个:

manage.py@pyweb > makemigrations
"C:\Program Files (x86)\JetBrains\PyCharm 4.5.3\bin\runnerw.exe" C:\Python34\python.exe "C:\Program Files (x86)\JetBrains\PyCharm 4.5.3\helpers\pycharm\django_manage.py" makemigrations C:/Users/Olivier/PycharmProjects/pyweb
No changes detected

Process finished with exit code 0
manage.py@pyweb > migrate
"C:\Program Files (x86)\JetBrains\PyCharm 4.5.3\bin\runnerw.exe" C:\Python34\python.exe "C:\Program Files (x86)\JetBrains\PyCharm 4.5.3\helpers\pycharm\django_manage.py" migrate C:/Users/Olivier/PycharmProjects/pyweb
Operations to perform:
  Synchronize unmigrated apps: staticfiles, messages, produits
  Apply all migrations: sessions, auth, contenttypes, admin
Synchronizing apps without migrations:
  Creating tables...
    Running deferred SQL...
  Installing custom SQL...
Running migrations:
  No migrations to apply.

Process finished with exit code 0

为了避免删除 db 文件，我错过了什么步骤？

最佳答案

更改模型后，您只需执行

python manage.py makemigrations your_app

然后迁移它

python manage.py migrate

这样做您不必删除您的数据库。
我希望这对您有所帮助.. 但是不要忘记在对模型应用更改后运行 makemigrations