Django给模型字段重命名

By Guanghao Zuo | | 1 minutes
Django

在Django中，一个模型就是一个类，模型里的字段就是类的属性，因此本文的标题也可以写作：Django重命名类属性。

如果模型刚写好，还没在数据库中创建表，把代码里所有的旧字段名改为新字段名即可。

如果已经修改了数据库，首先在代码里将旧字段名修改为新字段名；然后需要在数据库里对表列进行重命名。在Django里不用直接操作数据库，在终端里运行命令makemigrations，Django会识别出来你是想给data_added重命名，之后再在终端运行命令migrate即可。

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(/home/aoyu/AoyuCondaEnv/AoyuBlog) aoyu@aoyuSurface:~/AoyuPythonProjects/AoyuBlog$ python manage.py makemigrations aoyu_blog_logs
Was topic.data_added renamed to topic.date_added (a DateTimeField)? [y/N] y
Migrations for 'aoyu_blog_logs':
  aoyu_blog_logs/migrations/0004_rename_data_added_topic_date_added.py
    - Rename field data_added on topic to date_added

(/home/aoyu/AoyuCondaEnv/AoyuBlog) aoyu@aoyuSurface:~/AoyuPythonProjects/AoyuBlog$ python manage.py migrate
Operations to perform:
  Apply all migrations: admin, aoyu_blog_logs, auth, contenttypes, sessions
Running migrations:
  Applying aoyu_blog_logs.0004_rename_data_added_topic_date_added... OK