Django Model Formsets with Dynamic Fields: 在模型表单中处理动态字段的表单集

# models.py

class Product(models.Model):
    name = models.CharField(max_length=100)
    price = models.DecimalField(max_digits=6, decimal_places=2)

class Attribute(models.Model):
    product = models.ForeignKey(Product, on_delete=models.CASCADE)
    name = models.CharField(max_length=100)
    value = models.CharField(max_length=100)

# forms.py

class AttributeForm(forms.ModelForm):
    class Meta:
        model = Attribute
        fields = ['name', 'value']

AttributeFormset = forms.inlineformset_factory(Product, Attribute, form=AttributeForm)

# views.py

def add_product(request):
    if request.method == 'POST':
        form = ProductForm(request.POST)
        formset = AttributeFormset(request.POST)
        if form.is_valid() and formset.is_valid():
            product = form.save()
            attribute_instances = formset.save(commit=False)
            for instance in attribute_instances:
                instance.product = product
                instance.save()
            return redirect('index')
    else:
        form = ProductForm()
        formset = AttributeFormset()
    return render(request, 'add_product.html', {'form': form, 'formset': formset})

# template add_product.html

<form method="post">
    {% csrf_token %}
    {{ form.as_p }}
    {% for form in formset.forms %}
        {{ form.as_p }}
    {% endfor %}
    <input type="submit" value="保存">
</form>