如何从GTM dataLayer中检索对象

I have an image tag that I need to populate with the information from the eCommerce purchase. I need the individual items that are stored as a 'product' object in the Tagmanager datalayer. As per Google Analytics Enhanced Ecommerce tracking:

我有一个图像标签,我需要填写电子商务购买的信息。我需要在Tagmanager数据层中存储为“产品”对象的各个项目。根据Google Analytics增强型电子商务跟踪:

  dataLayer.push({
    'ecommerce': {
      'purchase': {
        'actionField': {
          'id': 'T12345',                         // Transaction ID. Required for purchases and refunds.
          'affiliation': 'Online Store',
          'revenue': '35.43',                     // Total transaction value (incl. tax and shipping)
          'tax':'4.90',
          'shipping': '5.99',
          'coupon': 'SUMMER_SALE'
        },
        'products': [{                            // List of productFieldObjects.
          'name': 'Triblend Android T-Shirt',     // Name or ID is required.
          'id': '12345',
          'price': '15.25',
          'brand': 'Google',
          'category': 'Apparel',
          'variant': 'Gray',
          'quantity': 1,
          'coupon': ''                            // Optional fields may be omitted or set to empty string.
         },
         {
          'name': 'Donut Friday Scented T-Shirt',
          'id': '67890',
          'price': '33.75',
          'brand': 'Google',
          'category': 'Apparel',
          'variant': 'Black',
          'quantity': 1
         }]
      }
    }
  });

So now I need to iterate through the products to build the image URL like:

所以现在我需要遍历产品来构建图像URL,如:

http://some-domain.com/?p1=12345&v1=15.25&p2=67890&v2=33.75...

Because the data is already in the dataLayer, I should be able to write some JavaScript to retrieve the product object, iterate over it's elements and create the string part that I need to append to the image URL. Makes sense, no?

因为数据已经在dataLayer中,所以我应该能够编写一些JavaScript来检索产品对象,迭代它的元素并创建我需要附加到图像URL的字符串部分。有道理,不是吗?

BUT: I do not know how to retrieve the product element within a tag. I tried creating the product object as a variable in tag manager, but that doesn't seem to work. I tried accessing it via:

但是:我不知道如何检索标签中的product元素。我尝试将产品对象创建为标记管理器中的变量,但这似乎不起作用。我尝试通过以下方式访问它

google_tag_manager["GTM-uniqueid"].dataLayer.get('ecommerce').purchase.products

but again that doesn't work.

但这又不起作用。

2 个解决方案

#1

One option would be to include an event in the dataLayer, for example:

一种选择是在dataLayer中包含一个事件,例如:

dataLayer.push({
    'event': 'ecomm event',
    'ecommerce': {
      'purchase': {
        'actionField': {
          'id': 'T12345',                         // Transaction ID. Required for purchases and refunds.
          // .... your original stuff
         }]
      }
    }
  });

In GTM, you would create a variable that would loop through that dataLayer when that event happens, and return the product names, something like this (you can tidy it up a bit):

在GTM中,您将创建一个变量,在该事件发生时循环遍历该dataLayer,并返回产品名称,如下所示(您可以稍微整理一下):

function(){
    var dl = {{DL - Ecomm products}};
    var prodNames = '';
    for (var i=0; i<dl.length; i++){
        prodNames += dl[i].name + '|';
    }
    return prodNames;
}

where {{DL - Ecomm products}} is a dataLayer variable with a value of ecommerce.purchase.products.

其中{{DL - Ecomm产品}}是一个dataLayer变量,其值为ecommerce.purchase.products。

#2

For those that struggle with the same:

对于那些与之斗争的人:

Create a DL Variable as ecommerce.purchase.products

创建DL变量作为ecommerce.purchase.products

Create a Custom JS Variable in GTM as:

在GTM中创建自定义JS变量:

function() {
var prods = {{DL - products}};
var src = "http://YOUR URL/?a=1"; 
var len = prods.length;
for (i=0; i < len; i++) {
var b = i+1;
src = src + "&ITEM" + b + "=" + prods[i].id + "&AMT" + b + "=" + prods[i].price + "&QTY" + b + "=" + prods[i].quantity;
}
src = src + "&CURRENCY=GBP";
return src;
}

Traffic the image tag as your Custom JavaScript Variable.

将图片代码作为自定义JavaScript变量进行投放。

Done

PS: Sorry about the bad formatting.

PS:抱歉格式不正确。

#1