Django - 覆盖的表单 save() 方法返回 None？

Question

目前，我的模型表单正在覆盖 save() 方法，并且它工作正常。问题是当我调用 savedObject = form.save() 时，表单被保存但它返回 None？在覆盖 save() 之前，我会得到保存的对象，但是这种方法有什么问题？

以模型形式保存():

def save(self, *args, **kwargs):
       kwargs['commit']=False
       obj = super(MyForm, self).save(*args, **kwargs)
       obj.time = datetime.date.today()
       obj.expire = datetime.date.today()
       return obj.save()

POST 后调用我的 View :

savedObject = form.save()
#form is now saved, but savedObject is None

Answer 1

正确的方法:

def save(self, commit=True):
    obj = super(MyForm, self).save(commit=False)
    obj.time = datetime.date.today()
    obj.expire = datetime.date.today()
    if commit:
        obj.save()
    return obj