Question

感谢您的时间。

我有一个模型（Servicos），他有一个链接的图像模型（Imagens）。 Servicos模型是模型调用（Parceiros）的外键，Parceiros链接到用户模型。我的user_create和parceiros_create视图工作正常。虽然Servicos模型表单与ImageFormSet（一次添加4张图像的表单）一起显示，并且当我尝试保存Servicos表单（在管理员工作正常）时，但是在模板上却出现此错误：

没有NULL约束失败：services_servicos.parceiro_id

并指向该行：

service.save()

我已经尝试设置service.save（parceiros = Parceiros.id），将外键更改为user（在测试项目上），等等。

它应该将Servicos对象保存到已登录的Parceiros实例中。如果我正确地调用Parceiro对象，我不太确定

models.py：


get_user_model = User

class Parceiros (models.Model):
    user = models.OneToOneField(User, on_delete=models.CASCADE)
    nome = models.CharField(max_length=200)
    endereco = models.TextField(max_length=400, blank=True)
    responsavel = models.CharField(max_length=100)
    tel = PhoneField(max_length=12)
    created_at = models.DateTimeField(auto_now=True)
    updated_at = models.DateTimeField(auto_now_add=True, blank=True)
    ativo = models.BooleanField(default=False)

    def get_queryset(self):
        queryset = super(Parceiros, self).get_queryset()
        return queryset

    def __str__(self):
        return '%s %s' % (self.user, self.nome)

    def get_absolute_url(self):
        return reverse('parceiro_detail2', kwargs={'pk': self.pk})


class Servicos (models.Model):
    parceiro = models.ForeignKey(Parceiros, on_delete=models.CASCADE, related_name='servi')
    tipo = models.CharField(max_length=200)
    objetivo = models.TextField(max_length=500, blank=True)
    preco = models.DecimalField(max_digits=9, decimal_places=2, blank=True)
    telefone = PhoneField(max_length=12, default='21968151502')

def get_image_filename(instance, filename):
    tipo = instance.servicos.tipo
    slug = slugify(tipo)
    return "servicos_imagens/%s-%s" % (slug, filename)

    def __str__(self):
        return '%s %s' % (self.tipo, self.parceiro)

class Imagens (models.Model):
    servicos = models.ForeignKey(Servicos, on_delete=models.CASCADE, related_name='images')
    imagem = models.ImageField(upload_to=get_image_filename)

views.py：

@login_required
def service_create(request):
    ImageFormSet = modelformset_factory(Imagens, fields=('imagem',), extra=4)
    if request.method == 'POST':
        form = ServicosForm(request.POST)
        formset = ImageFormSet(request.POST or None, request.FILES)
        if form.is_valid() and formset.is_valid():
            service = form.save(commit=False)
            service.save()

            for f in formset:
                try:
                    photo = Imagens(servicos=service, imagem=f.cleaned_data['imagem'])
                    photo.save()

                except Exception as e:
                    break
            return redirect(reverse('parceiro_detail2', kwargs={'service': service.id}))
    else:
        form = ServicosForm()
        formset = ImageFormSet(queryset=Imagens.objects.none())
    context = {
        'form': form,
        'formset': formset,
    }
    return render(request, 'servicoform.html', context)

Answer 1

解决方案是通过请求用户调用Parceiros对象（我想是因为它与User模型一起是一个onetoOne字段）：

    if request.method == 'POST':
        form = ServicosForm(request.POST)
        formset = ImageFormSet(request.POST or None, request.FILES)
        if form.is_valid() and formset.is_valid():
            service = form.save(commit=False)
            service.parceiro = request.user.parceiros
            service.save()

在混合表单上，NOT NULL约束失败

1 个答案: