Question

我创建了一个表格来创建我的汽车经销商模型的实例。现在，我希望能够单击编辑图标，并转到带有预先填充有模型实例属性的表单的页面。

我还想知道是否需要创建单独的表单，视图和模板以进行创建和编辑，或者我是否可以某种方式重用它们？

models.py

class Dealer(models.Model):
    name = models.CharField(max_length=50)
    phone = models.CharField(max_length=50)
    website = models.CharField(max_length=100)
    address = models.CharField(max_length=100)
    featured_image = models.ImageField(upload_to="dealers/")

    def image_tag(self):
        return mark_safe('<img src="%s" style="height: 300px; width: auto;"/>' % (self.featured_image.url))

    image_tag.short_description = 'Image'

    class Meta:
        verbose_name_plural = "Dealers"

    def __str__(self):
        return self.name

views.py

def create_dealer_view(request):
    if request.method == "POST":
        form = CreateDealerForm(request.POST, request.FILES)
        if form.is_valid():
            dealer = form.save(commit=False)
            dealer.save()
            return redirect('main:homepage_view')
    else:
        form = CreateDealerForm
    context = {
        "title": "Create - Dealer",
        "form": form,
    }
    return render(request=request, template_name="main/create/create_dealer.html", context=context)

forms.py

class CreateDealerForm(forms.ModelForm):
    class Meta:
        model = Dealer
        fields = ('name', 'phone','website', 'address', 'featured_image',)
        widgets = {
            'name': forms.TextInput(attrs={'class': 'dealer-name-field', 'placeholder': 'Dealer name'}),
            'phone': forms.TextInput(attrs={'class': 'dealer-phone-field', 'placeholder': 'Dealer phone'}),
            'website': forms.TextInput(attrs={'class': 'dealer-website-field', 'placeholder': 'Dealer website'}),
            'address': forms.TextInput(attrs={'class': 'dealer-address-field', 'placeholder': 'Dealer address'}),
        }

Answer 1

您只需要编写一个更新视图及其URL，就可以使用相同的表单和模板

def update_dealer_view(request, pk=none):
    instance = get_object_or_404(Dealer, pk=pk)
    form = CreateDealerForm(request.POST, request.FILES, , instance=instance)
    if form.is_valid():
        dealer = form.save(commit=False)
        dealer.save()
        return redirect('main:homepage_view')

    context = {
        "title": "Update - Dealer",
        "form": form,
        "instance=instance"
    }
    return render(request=request, template_name="main/create/create_dealer.html", context=context)

并为此视图创建一个网址

 path('dealer/update/<int:pk>/', update_dealer_view, name='update_dealer),

编辑模型的现有实例

1 个答案: