“ Album.singer”必须是“ Singer”实例

Question

Tracebck

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2。即使我在forms.py中更改了标签名称，它也使用了我尝试使用的默认名称，该代码可以解决该问题，但尚未解决。name = forms.CharField(label='Singer')

forms.py

class AlbumForm(forms.ModelForm):
    title = forms.CharField(max_length=50,label='Album title')

    class Meta:
        model=Album
        exclude = ['singer']

class SingerForm(forms.ModelForm):

    class Meta:
        model = Singer
        fields = ['name']
        label = {'name':'Singer'}

views.py

class AlbumSinger(View):
    def get(self,request,pk=None):
        singer_form = SingerForm(instance=Singer())
        album_form = AlbumForm(instance=Album())
        context = {
            'singer_form':singer_form,
            'album_form':album_form
        }
        return render(request, 'album/multi_form.html', context)

    def post(self,request,pk=None):
        context = {}
        singer_form = SingerForm(request.POST,instance=Singer())
        album_form = AlbumForm(request.POST,instance=Album())
        if singer_form.is_valid and album_form.is_valid:
            singer_form.save()
            new_album = album_form.save(commit=False)
            new_album.singer = singer_form
            new_album.save()
            return HttpResponseRedirect('/album/')
        context = {
            'singer_form' : singer_form,
            'album_form' : album_form
        }
        return render(request, 'album/multi_form.html', context)

Answer 1

尝试一下

if singer_form.is_valid and album_form.is_valid:
    singer_instance = singer_form.save() # assign the created instance to a variable
    new_album = album_form.save(commit=False)
    new_album.singer = singer_instance # use the model instance
    new_album.save()