我是CBV的新手,我试图使用通用视图CreateView
并理解它。基于Django类的通用视图“CreateView”表单错误处理
在models.py我有这样的模式:
class CartConfig(models.Model):
cart_key = models.CharField(
'Chave do Carrinho', max_length=40, db_index=True
)
PAYMENT_OPTION_CHOICES = (
('cash', 'Dinheiro'),
...
)
payment_option = models.CharField(
'Opção de Pagamento', choices=PAYMENT_OPTION_CHOICES, max_length=20,
default='cash'
)
address = models.ForeignKey(Address, verbose_name='Endereço de entrega',
blank="false"
)
class Meta:
verbose_name = 'Configuração do carrinho'
verbose_name_plural = 'Configurações do carrinho'
def __str__(self):
return 'Cart configs for {}'.format(self.cart_key)
该模型采用了ForeignKey
到Address
,这也是在User
模型ManyToMany
场。 所以,在我views.py我编辑'adress'字段的查询集处理只有relationed到当前User
地址:
class CartConfigView(CreateView):
model = CartConfig
template_name = 'checkout/cart_config.html'
fields = ['address','payment_option']
success_url = reverse_lazy('index')
def get_context_data(self, **kwargs):
context = super(CartConfigView, self).get_context_data(**kwargs)
context['form'].fields['address'].queryset = get_object_or_404(User, pk=self.request.user.pk).address.all()
context['form'].fields['address'].empty_label = None
return context
在我的模板,它工作正常,显示出正确的地址列表,通过帖子形式创建它。但是,如果用户不选择地址,则会触发预期的错误NOT NULL constraint failed: checkout_cartconfig.address_id
。问题是,CreateView
不应该处理这个错误?我究竟做错了什么?我怎样才能通过field.errors
刷新页面以向用户显示“必填字段”消息?
blank应该是一个布尔型的'blank = False'。也许字符串“false”解决了truthy问题,而不是在html中的表单输入中添加'required'标签。 – Brobin
@Brobin是的,为这个错误感到羞耻hahah =(,谢谢你的回复! –