如何在Django中修改对象的序列化属性?

时间:2019-05-21 02:40:49

标签: django

由于Google增强型电子商务需要如何处理数据,我需要将OrderItem对象的字段product更改为name

Google Analytics(分析)电子商务的必填字段:

https://developers.google.com/analytics/devguides/collection/analyticsjs/enhanced-ecommerce#product-data

工作示例

https://developers.google.com/tag-manager/enhanced-ecommerce#purchases

如前所述,我的模型将此字段命名为product,但Google需要将其命名为name

  

是否可以在视图中更改它?还是我需要改变它   使用Javascript以某种方式在HTML中实现?

视图

def thanks_deposit_payment(request):
    order_number = Order.objects.latest('id').id

    total = Order.objects.latest('id').total

    costo_despacho = Order.objects.latest('id').shipping_cost

    order_items = OrderItem.objects.filter(order=Order.objects.latest('id'))


    order_items = serialize('json', order_items, fields=['id', 'sku', 'product', 'price', 'size', 'quantity'])


    response = render(request, 'thanks_deposit_payment.html', dict(order_number=order_number, total=total,
                                                               order_items=order_items, costo_despacho=costo_despacho))
    return response

模板:

<script>
        window.dataLayer = window.dataLayer || [];
        window.dataLayer.push({
            event: 'eec.purchase',
            ecommerce: {
                currencyCode: 'PEN',
                purchase: {
                    actionField: {
                        id: {{ order_number }},
                        affiliation: 'Stickers Gallito E-Commerce',
                        revenue: {{ total }},
                        shipping: {{ costo_despacho }},
                        coupon: ''
                    },
                    products: JSON.parse('{{ order_items | safe }}')
                },

            }
        });
    </script>

models.py

class OrderItem(models.Model):
    order = models.ForeignKey(Order, on_delete=models.CASCADE)
    product = models.CharField(max_length= 200)
    sku = models.CharField(max_length=20)
    quantity = models.CharField(max_length= 200)
    size = models.CharField(max_length=200)
    price = models.DecimalField(max_digits=10, decimal_places=2, verbose_name= 'PEN Price')
    file = models.FileField(upload_to='files', blank=True, null=True)
    comment = models.CharField(max_length=200, blank=True, null=True, default='')
    uploaded_at = models.DateTimeField(auto_now_add=True)

更新1

感谢ruddra回答,我将'产品'更改为'名称',但dataLayer显示:

Uncaught SyntaxError: missing ) after argument list

products: JSON.parse('[{'sku': 'M1', 'quantity': '10', 'size': 'varios', 'price': '3.00', 'name': 'Sobre con muestras'}]')

只有当我用答案中的建议改变看法时,这种情况才会发生。

2 个答案:

答案 0 :(得分:2)

您可以注释查询集,以便结果具有一个name字段

q = Q(order=Order.objects.latest('id'))
order_items = OrderItem.objects.filter(q).annotate(name=F('product'))

然后在序列化器字段中将product替换为name

编辑:感谢评论者指出,这实际上是行不通的,因为Django的serialize仅会序列化属于模型字段的属性。您还必须编写一个自定义的序列化器。

答案 1 :(得分:1)

可以更改视图,您可以这样做:

order_items = serialize('json', order_items, fields=['id', 'product', 'price'])  # the fields needed for products

order_items_json = json.loads(order_items)
products_list = []
for item in order_items_json:
    product_dict = item.get('fields')
    product_dict['name'] = product_dict.pop('product')
    products_list.append(product_dict)

return render('template_name.html', dict(order_number=order_number, total=total, order_items=json.dumps(products_list), costo_despacho=costo_despacho))