Question

从'simple'dataLayer创建GTM变量没有问题，例如：

"transactionEntity": "ORDER",
"transactionId": "193552702",

但无法理解如何从对象中获取值。基本上我需要从这个dataLayer中获取值：

var dataLayer = [({
    "productReviews": [{
        "name": "Donna S. - Stockton, CA",
        "datePublished": "2016-01-01",
        "ratingValue": "5",
        "reviewBody": "Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua."
    }, {
        "name": "Sharon N. - Belfast, UK",
        "datePublished": "2016-02-01",
        "ratingValue": "5",
        "reviewBody": "Sed ut perspiciatis unde omnis iste natus error sit voluptatem accusantium doloremque laudantium, totam rem aperiam."
    }, {
        "name": "Elizabeth M. - Richmond, VA",
        "datePublished": "2016-03-01",
        "ratingValue": "5",
        "reviewBody": "At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos."
    }],
})]

将name，datePublished，ratingValue，reviewBody值传递给以下GTM变量：

<script type="application/ld+json">
{
    "review": [{
        "@type": "Review",
        "author": {
            "@type": "Person",
            "name": ""
        },
        "datePublished": "",
        "reviewRating": {
            "@type": "Rating",
            "ratingValue": "",
            "bestRating": "5",
            "worstRating": "1"
        },
        "reviewBody": ""
    }, {
        "@type": "Review",
        "author": {
            "@type": "Person",
            "name": ""
        },
        "datePublished": "",
        "reviewRating": {
            "@type": "Rating",
            "ratingValue": "",
            "bestRating": "5",
            "worstRating": "1"
        },
        "reviewBody": ""
    }, {
        "@type": "Review",
        "author": {
            "@type": "Person",
            "name": ""
        },
        "datePublished": "",
        "reviewRating": {
            "@type": "Rating",
            "ratingValue": "",
            "bestRating": "5",
            "worstRating": "1"
        },
        "reviewBody": ""
    }]
}
</script>

更新：根据vinoaj的回答，我做了以下事情：

<script type="application/ld+json">
{
    "@context": "http://schema.org",
    "@type": "Product",
    "name": "{{dataLayerProductName}}",
    "sku": "{{dataLayerProductId}}",
    "aggregateRating": {
        "@type": "AggregateRating",
        "ratingValue": "{{dataLayerRatingValue}}",
        "reviewCount": "{{dataLayerReviewCount}}"
    },
    "review": [
    var productReviews = {{dataLayerProductReviews}};
    for (i = 0, l = productReviews.length; i < l; i++){
        var r = productReviews[i];
        {
            "@type": "Review",
                "author": {
                    "@type": "Person",
                    "name": "r.name"
                },
                "datePublished": "r.datePublished",
                "reviewRating": {
                    "@type": "Rating",
                    "ratingValue": "r.ratingValue",
                    "bestRating": "5",
                    "worstRating": "1"
                },
                "reviewBody": "r.reviewBody"
        },
    }]
}
</script>

但是这给出了错误“Syntax error: value, object or array expected。”

P.S。我知道更新问题不是正确的方法，但是没有办法以可读的方式在评论中插入代码。

Answer 1

要处理传递给数据层的对象，请执行以下操作。

第1步

为密钥productReviews创建数据层变量。

将变量命名为DLV - productReviews或类似的简单但具有描述性的内容。

第2步

创建一个自定义HTML标记，用于对象执行某些操作。在下面的例子中，我只是输出每个评论的值。在您的情况下，您可以修改以下内容以生成JSON + LD对象。

<script>
  var productReviews = {{DLV - productReviews}};
  for (i = 0, l = productReviews.length; i < l; i++){
    var r = productReviews[i];
    console.log("GTM says: ", r.name, r.datePublished, r.ratingValue, r.reviewBody);
  }
</script>

或尝试根据您的示例构建JSON-LD对象：

<script>
  var reviewArr = [];
  var productReviews = {{DLV - productReviews}};
  for (i = 0, l = productReviews.length; i < l; i++){
    var r = productReviews[i];
    reviewArr.push({
        "@type": "Review",
        "author": {
            "@type": "Person",
            "name": r.name
        },
        "datePublished": r.datePublished,
        "reviewRating": {
            "@type": "Rating",
            "ratingValue": r.ratingValue,
            "bestRating": "5",
            "worstRating": "1"
        },
        "reviewBody": r.reviewBody
    })
  }
</script>


<script type="application/ld+json">
{
    "@context": "http://schema.org",
    "@type": "Product",
    "name": "{{dataLayerProductName}}",
    "sku": "{{dataLayerProductId}}",
    "aggregateRating": {
        "@type": "AggregateRating",
        "ratingValue": "{{dataLayerRatingValue}}",
        "reviewCount": "{{dataLayerReviewCount}}"
    },
    "review": reviewArr
}
</script>

将复杂数据层中的值放入GTM变量中

1 个答案: