Question

这是我的观点。

@ login_required
def product_list(request):
    products = ProductBasicModels.objects.filter(whose=request.user).prefetch_related('category', 'category__category').order_by('category__ordering_num')
    context = {'products': products}
    return render(request, 'medicalapp_1/products_h.html', context)


@ login_required
def product_edit(request, pk):
    post = get_object_or_404(ProductBasicModels, pk=pk)
    if request.method == 'POST':
        form = ProductForm(request.POST, instance=post)
        if form.is_valid():
            post = form.save(commit=False)
            post.whose = request.user
            post.save()
            return redirect('product_list')
    else:
        form = ProductForm(instance=post)
    return render(request, 'medicalapp_1/product_add.html', {'form': form})

和我的模特

class SubCategory(models.Model):
    category = models.ForeignKey('Category', on_delete=models.CASCADE)
    name = models.CharField(max_length=50)
    ordering_num = models.IntegerField(default=0)

    class Meta:
        ordering = ['ordering_num']

    def __str__(self):
        return self.name


class ProductBasicModels(models.Model):
    whose = models.ForeignKey(settings.AUTH_USER_MODEL, on_delete=models.CASCADE)
    check = models.BooleanField(default=False) # this is for Checkbox.
    category = models.ForeignKey(SubCategory, on_delete=models.CASCADE) # Change this with Checkbox
    name = models.CharField(max_length=50)
    standard = models.CharField(max_length=50)
    maker = models.CharField(max_length=50, blank=True)
    outbox = models.CharField(max_length=50, blank=True)
    extra = models.CharField(max_length=100, blank=True)
    orderto = models.ForeignKey(OrderCompany, null=True, blank=True, on_delete=models.CASCADE)
    created_at = models.DateTimeField(auto_now_add=True)
    updated_at = models.DateTimeField(auto_now=True)

    def __str__(self):
        return self.name

表单

class ProductForm(forms. ModelForm):
    class Meta:
        model = ProductBasicModels
        fields = ('check', 'category', 'name', 'standard', 'maker', 'outbox', 'extra', 'orderto')

    def __init__(self, *args, **kwargs):
        super(ProductForm, self).__init__(*args, **kwargs)
        for field_name, field in self.fields.items():
            field.widget.attrs['class'] = 'form-control'

和我的模板..

<tbody>
{% for product in subcat.list %}
    <tr>
        <td class="text-center">
            <label class="btn btn-default btn-outline btn-block">
                <input type="checkbox" name="product_selected" value="{{product.id}}" />
            </label>

        </td>
        <td class="text-center">{{ product.name }}</td>
        <td class="text-center">{{ product.standard }}</td>
        <td class="text-center">{{ product.maker }}</td>
        <td class="text-center">{{ product.outbox }}</td>
        <td class="text-center">{{ product.extra }}</td>
        <td class="text-center">{{ product.orderto }}</td>
        <td class="text-center">
            <a href="{% url 'product_edit' pk=product.pk %}"
               class="btn btn-info btn-sm">
                <i class="fa fa-edit"> EDIT</i>
            </a>
        </td>
        <td class="text-center">
            <a href="{% url 'product_del' pk=product.pk %}"
               class="btn btn-danger btn-sm btn-outline">
                <i class="fa fa-trash"></i>
            </a>
        </td>
    </tr>
{% endfor %}
</tbody>

我正在做如下所示。

screenshot

我需要做的是立刻更改所有Checked（图像中的红色）产品（CheckBox）的类别。如何使用该列表进行检查？永远感谢你的帮助。对于没有足够学习的问题，我很抱歉。

Answer 1

您可以使用product_selected复选框和必须设置的类别创建表单。在表单提交（在product_list视图中的POST处理程序代码）中，您可以通过以下方式更新所有选定的类别：

在您的模板中

<form method="POST" action="{% url 'products:list' %}">
    {{ products_form.category }}
    <input type="submit" name="update_products" value="Save">
    ...
    <tbody>
    {% for product in subcat.list %}
        <tr>
            <td class="text-center">
                <label class="btn btn-default btn-outline btn-block">
                    <input type="checkbox" name="product_selected" value="{{product.id}}" />
                </label>
    ...
</from>

添加新表单：

class ProductsUpdateForm(forms. Form):
    product_selected = forms.MultipleChoiceField()
    category = forms.ChoiceField()

    def __init__(self, *args, **kwargs):
        products = kwargs.pop('products', [])
        super(ProductForm, self).__init__(*args, **kwargs)

        # TODO: you need to set your allowed category choices
        # self.fields['category'].choices = get_allowed_categories()
        self.fields['product_selected'].choices = [(product.id, product.id) for product in products]

在您的视图中验证表单并更新产品：

@ login_required
def product_list(request):
    products = ProductBasicModels.objects.filter(whose=request.user).prefetch_related('category', 'category__category').order_by('category__ordering_num')

    products_form = ProductsUpdateForm(request.POST or None, products=products)
    if 'update_products' in request.POST:
        if products_form.is_valid():
            data = form.cleaned_data
            ProductBasicModels.objects.filter(
                id__in=data['product_selected']
            ).update(category_id=data['category'])

    context = {
        'products': products,
        'products_form': products_form
    }

    return render(request, 'medicalapp_1/products_h.html', context)

请注意，这不是一个完全正常工作的代码，而是一个如何实现它的示例。

Django：立即更新所有已检查产品的类别（由选择字段选择）

1 个答案: