django创建数据库模型报错：TypeError: __init__() missing 1 required positional argument: 'on_delete'...
2020-03-01 04:13
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在创建django数据库模型时遇到如下错误：
TypeError: __init__() missing 1 required positional argument: 'on_delete'，如图：
该错误为创建外键时缺少必要参数导致的，解决方法如下：
对需要创建外键的字段添加on_delete=models.CASCADE即可
CASCADE:级联删除，也就是当删除主表的数据时候从表中的数据也随着一起删除
转载于:https://www.cnblogs.com/NoctisYang/p/8631320.html
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