Django,将已排除的属性添加到提交的模型窗体中 [英] Django, adding excluded properties to the submitted modelform

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问题描述

我有一个modelform,我排除了两个字段, create_date created_by 字段。现在,当使用 save()方法时,我得到Not Null错误,因为 created_by 是空的。 p>

我已经尝试在 save()方法之前的表单中添加用户ID,如下所示: form.cleaned_data ['created_by'] = 1 form.cleaned_data ['created_by_id'] = 1 。但这些都不行。有人可以向我解释一下,如何将附加附加内容添加到提交的模型中,以便保存?



pre $ class Location(models.Model):
name = models.CharField(max_length = 100)
created_by = models.ForeignKey(User)
create_date = models.DateTimeField(auto_now = True)

class LocationForm(forms.ModelForm):
class Meta:
model = Location
exclude =('created_by' ,'create_date',)


解决方案

您的表单中的 created_by create_date 的字段,尝试通过 form.cleaned_data 没有任何意义。



这是你可以做的:



如果你有一个看法,你可以简单地使用 form.save(commit = False),然后设置 created_by / p>

  def my_view(request):
如果request.method ==POST:
form = LocationForm(request.POST)
如果form.is_valid():
obj = form.save(commit = False)
obj.created_by = request.user
obj.save()
...
...

`



如果您使用管理员,可以覆盖 save_model()方法以获得所需的结果。

  class LocationAdmin(admin.ModelAdmin):
def save_model(self,request,obj,form,change):
obj .created_by = request.user
obj.save()


I've a modelform and I excluded two fields, the create_date and the created_by fields. Now I get the "Not Null" error when using the save() method because the created_by is empty.

I've tried to add the user id to the form before the save() method like this: form.cleaned_data['created_by'] = 1 and form.cleaned_data['created_by_id'] = 1. But none of this works.

Can someone explain to me how I can 'add' additional stuff to the submitted modelform so that it will save?

class Location(models.Model):
    name = models.CharField(max_length = 100)
    created_by = models.ForeignKey(User)
    create_date = models.DateTimeField(auto_now=True)

class LocationForm(forms.ModelForm):
    class Meta:
        model = Location
        exclude = ('created_by', 'create_date', )

解决方案

Since you have excluded the fields created_by and create_date in your form, trying to assign them through form.cleaned_data does not make any sense.

Here is what you can do:

If you have a view, you can simply use form.save(commit=False) and then set the value of created_by

def my_view(request):
    if request.method == "POST":
        form = LocationForm(request.POST)
        if form.is_valid():
            obj = form.save(commit=False)
            obj.created_by = request.user
            obj.save()
        ...
        ...

`

If you are using the Admin, you can override the save_model() method to get the desired result.

class LocationAdmin(admin.ModelAdmin):
    def save_model(self, request, obj, form, change):
        obj.created_by = request.user
        obj.save()

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