为什么django 的model.save() 不调用full_clean()? [英] Why doesn't django's model.save() call full_clean()?

问题描述

我只是好奇是否有人知道 django 的 orm 是否有充分的理由不对模型调用full_clean"，除非它被保存为模型表单的一部分.

I'm just curious if anyone knows if there's good reason why django's orm doesn't call 'full_clean' on a model unless it is being saved as part of a model form.

请注意，当您调用模型的 save() 方法时，full_clean() 不会自动调用.当您想为自己手动创建的模型运行一步模型验证时，您需要手动调用它.django 的完整清洁文档

Note that full_clean() will not be called automatically when you call your model’s save() method. You’ll need to call it manually when you want to run one-step model validation for your own manually created models. django's full clean doc

(注意:为 Django 1.6 更新了报价...之前的 django 文档也有关于 ModelForms 的警告.)

(NOTE: quote updated for Django 1.6... previous django docs had a caveat about ModelForms as well.)

人们不想要这种行为是否有充分的理由?我想如果您花时间为模型添加验证，您会希望每次保存模型时都运行验证.

Are there good reasons why people wouldn't want this behavior? I'd think if you took the time to add validation to a model, you'd want that validation run every time the model is saved.

我知道如何让一切正常工作，我只是在寻找一个解释.

I know how to get everything to work properly, I'm just looking for an explanation.

推荐答案

AFAIK，这是因为向后兼容.带有排除字段的 ModelForms、带有默认值的模型、pre_save() 信号等也存在问题.

AFAIK, this is because of backwards compatibility. There are also problems with ModelForms with excluded fields, models with default values, pre_save() signals, etc.

您可能感兴趣的来源:

• http://code.djangoproject.com/ticket/13100
• http://groups.google.com/group/django-开发人员/browse_frm/thread/b888734b05878f87

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