Django:TypeError: init() missing 1 required positional argument: 'on_delete'

时间 2019-12-13

标签 django typeerror init missing required positional argument delete 栏目 Python 繁體版

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问题： TypeError: init() missing 1 required positional argument: ‘on_delete’web 缘由：在Django 2.0之后的版本中，须要在引用外键时在括号内加入on_delete=models，以此产生联级做用，避免两个表内数据因发生变化而不一样步致使异常。svg hbook=models.ForeignKey(BookInfo,

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1. 解决--TypeError: __init__() missing 1 required positional argument: 'on_delete'
2. TypeError: __init__() missing 1 required positional argument: 'on_delete'
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4. model.ForeignKey() TypeError: __init__() missing 1 required positional argument: 'on_delete'
5. Django报错：__init__() missing 1 required positional argument: 'on_delete'
6. 解决TypeError: __init__() missing 1 required positional argument: 'on_delete'
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8. 解决Django: [TypeError: __init__() missing 1 required positional argument: 'on_delete']
9. django报错TypeError: __init__() missing 1 required positional argument: 'on_delete'
10. 执行python manage.py makemigrations时报错：__init__() missing 1 required positional argument: 'on_delete'
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1. 解决--TypeError: __init__() missing 1 required positional argument: 'on_delete'
2. TypeError: __init__() missing 1 required positional argument: 'on_delete'
3. Django报错 __init__() missing 1 required positional argument 'on_delete'
4. model.ForeignKey() TypeError: __init__() missing 1 required positional argument: 'on_delete'
5. Django报错：__init__() missing 1 required positional argument: 'on_delete'
6. 解决TypeError: __init__() missing 1 required positional argument: 'on_delete'
7. 记录django的错误之：__init__() missing 1 required positional argument: 'on_delete'
8. 解决Django: [TypeError: __init__() missing 1 required positional argument: 'on_delete']
9. django报错TypeError: __init__() missing 1 required positional argument: 'on_delete'
10. 执行python manage.py makemigrations时报错：__init__() missing 1 required positional argument: 'on_delete'

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Django:TypeError: __init__() missing 1 required positional argument: 'on_delete'

Django:TypeError: init() missing 1 required positional argument: 'on_delete'