我有这个模型来存储有关计算机的信息。我试图添加一个功能，直接导入包含数据的Excel文件，而不是在表格中输入数据，以防有大量的数据输入。
models.py

class Product(models.Model):
    
    model=models.CharField(max_length=50, null=True)
    serial=models.CharField(max_length=50, null=True)
    hd_size=models.CharField(max_length=50,null=True)
    ram=models.CharField(max_length=50, null=True)
    processor=models.CharField(max_length=50, null=True)
    date_created = models.DateTimeField(default=timezone.now)
    date_updated = models.DateTimeField(auto_now=True)

    def __str__(self):
        return self.serial + ' - ' + self.model

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Views.py

@login_required
def product_mgt(request):
    context['page_title'] = "Computer List"
    products = Product.objects.all()
    context['products'] = products

    return render(request, 'product_mgt.html', context)

型
Forms.py

class SaveProduct(forms.ModelForm):
    model= forms.CharField(max_length=50,)
    serial= forms.CharField(max_length=50, )
    hd_size= forms.CharField(max_length=50, )
    ram= forms.CharField(max_length=50, )
    processor= forms.CharField(max_length=50, )

    class Meta:
        model = Product
        fields = ('model','serial','hd_size','ram', 'processor')

    def clean_serial(self):
        id = self.instance.id if self.instance.id else 0
        serial = self.cleaned_data['serial']
        try:
            if int(id) > 0:
                product = Product.objects.exclude(id=id).get(serial = serial)
            else:
                product = Product.objects.get(serial = serial)
        except:
            return serial
        raise forms.ValidationError(f"{serial} Computer Already Exists.")

型