javascript – Google DFP广告管理系统 – 从内部调整SafeFrame自定义广告素材外部iframe容器(展开广告)

我正在搜索解决方案,可以从Google DFP中的自定义广告素材中扩展SafeFrame自定义广告,这有可能吗?

解决方法:

有两种可能的解决方案:

1)使用SafeFrame API

优点:

>你可以“开箱即用”
>您可以在任何网站上使用它,不需要网站上的自定义代码
>使用安全

缺点:

>它仅限于填充网站的可见区域
>需要等待,直到广告单元对用户可见

2)使用window.postMessage()javascript方法编写自己的API代码

缺点:

>您需要为您的网站添加自定义代码
>如果您使用某些第三方广告,这可能是一种威胁

优点:

>您可以通过广告素材对您的网站进行几乎所有操作

1)使用SafeFrame API

这个API易于使用,您可以在其中看到一些示例
GPT Safeframe preview tool.

首先,您需要在< head>中更新DFP初始化脚本你的网站

var pageConfig = {
    allowOverlayExpansion: true,
    allowPushExpansion: true,
    sandbox: true
};
googletag.pubads().setSafeFrameConfig(pageConfig);

这样可以在您的网站上展开SafeFrame广告.更多关于这一点
    Control SafeFrame Container behavior through GPT.

现在,您可以创建自定义广告素材并在网站上将其作为SafeFrame投放.这是我的一个例子.这个例子可以“等待”它的可见性,然后将扩展到< div id =“container”>的高度.那是在SafeFrame中:

<div id="container">
    some lines to make container height<br>
    line<br>
    line<br>
    line<br>
    line<br>
    line<br>
    line<br>
    line<br>
    line<br>
    line<br>
    line<br>
    line<br>
    line<br>
    line<br>
    line<br>
    line<br>
    line<br>
    line<br>
</div>

<script>
    // global expanded indicator variable, because API don't have any
    var expanded = false;
    function expand() {
        var self= $sf.ext.geom().self;
        var config = {
            push: true, // we want to push expanded content
            b: 0
        };

        var el = document.getElementById('container');
        var containerHeight = el.offsetHeight;

        // get height from bottom, that need to be expanded
        var expandBottom = containerHeight - self.h;

        // if container is whole inside a SafeFrame, it will not expand
        if(expandBottom < 0) return;

        config.b = expandBottom;
        $sf.ext.expand(config);
    }

    function expandDelayed(forceExpand) {
        // expand will run just once, or you can force it to run again
        // but collapse first is needed
        if(expanded && forceExpand || !expanded) {
            $sf.ext.collapse();
            expanded = false;
            // there must be some timeout, because .collapse(); method is deplayed somehow
            setTimeout(expand, 0);
        }
    }

    $sf.ext.register(160, 150, function(status, data) {
        // this code will do whole magic of "waiting" for right moment
        if (status === 'geom-update') {
            expandDelayed();
        }

        // change global expanded status
        if (status === 'expanded') {
            expanded = true;
        }
    });

    // init
    expandDelayed();
</script>

2.使用window.postMessage()javascript方法编写自己的API

首先,您需要将此代码放入< head>中的DFP初始化脚本中.你的网站.此代码会将广告位ID作为#hash-tag添加到< iframe>的src中,以便您可以从广告素材内部获取该ID.

googletag.pubads().addEventListener('slotRenderEnded', function (event) {
    var containerId = event.slot.getSlotElementId();
    var containerEl = document.getElementById(containerId);

    if (containerEl === null) return;

    var iframeEl = containerEl.querySelectorAll('iframe')[0];

    // it's delayed by 10 milliseconds, because iframe is not yet fully rendered
    // and limited to max to 10 seconds to wait 
    var timeoutFunction = function () {
        var src = "#" + containerId;
        // `src` attribute is null, when iframe is FriendlyIframe, and
        // when it's present, then it's SafeFrame
        if (iframeEl.getAttribute('src') !== null) {
            src = iframeEl.getAttribute('src').replace(/#.*/, "") + src;
        } else {
            var name = iframeEl.getAttribute('name') + "#" + containerId;
            iframeEl.setAttribute('name', name);
        }
        iframeEl.setAttribute('src', src);
    };
    setTimeout(timeoutFunction, 10);
});

其次,您需要将此代码添加到您的网站,最好将其作为单独的.js文件添加.

function onMessageReceivedGetStyle(e) {

    // this will filter just setStyle commands from correct origin
    if (
        !(e.origin === 'http://tpc.googlesyndication.com' || e.origin === 'https://tpc.googlesyndication.com') ||
        typeof e.data !== 'object' ||
        typeof e.data.id !== 'string' ||
        e.data.cmd !== 'setStyle' ||
        typeof e.data.params !== 'object'
    ) {
        return;
    }

    // remove # character from id, we don't use jquery
    var elementId = e.data.id.replace(/#/, "");

    var wrapperEl = document.getElementById(elementId);
    if (wrapperEl === null) {
        return;
    }

    var elements = [wrapperEl];
    // you can target child elements too with query parameter
    if (typeof e.data.query === 'string' && e.data.query) {
        elements = wrapperEl.querySelectorAll(e.data.query);
    }

    elements.forEach(function (element) {
        Object.keys(e.data.params).forEach(function (param) {
            element.style[param] = e.data.params[param];
        });
    });

}

if (window.addEventListener) {
    addEventListener('message', onMessageReceivedGetStyle, false);
}
else {
    if (window.attachEvent) {
        attachEvent('onmessage', onMessageReceivedGetStyle);
    }
    else {
        window.onmessage = onMessageReceivedGetStyle;
    }
}

第三件事是DFP广告管理系统中自定义广告素材类型中的自定义代码.这是一个例子,类似于
第一个例子,但是这里这个脚本可以等到加载所有内容和图像然后扩展/缩小你的
带有广告素材的iframe:

<div id="container">
    <a href="#" target="_blank">
        <img src="%%FILE:JPG1%%">
    </a>
    <a href="#" target="_blank">
        <img src="%%FILE:JPG2%%">
    </a>
</div>

<style>
    a {
        display: block;
        margin-bottom: .5em;
    }
    img {
        display: block;
        max-width: 100%;
    }
    *:last-child {
        margin-bottom: 0;
    }
</style>

<script>
    var container = document.getElementById('container');

    function resizeOutsideSafeFrame() {
        if (!window.top.postMessage) {
            return false;
        }

        // get ID of your Ad unit <div> with this creative 
        var divGptAdId = '%%PATTERN:url%%';

        if (divGptAdId.indexOf('#') !== -1) {
            divGptAdId = divGptAdId.split('#')[1];
        } else {
            divGptAdId = window.location.hash;
        }

        if(!divGptAdId) {            
            if (window.name.indexOf('#') !== -1) {               
                divGptAdId = window.name.split('#')[1];
            }
        }

        if(!divGptAdId) {
            return;
        }

        // set with to fullwidth, and height to height of container inside creative
        var width = '100%';
        var height = container.offsetHeight + 'px';

        // send our request to website
        window.top.postMessage({
            cmd: 'setStyle',
            id: divGptAdId,
            query: 'div, iframe', // we want to target child div and iframe and don't change container styles
            params: {
                display: 'block',
                height: height,
                width: width
            }
        }, '*');
    }

    document.onreadystatechange = function () {
        // resize iframe when all is loaded
        if (document.readyState == "complete") {
            resizeOutsideSafeFrame();
        }
    };

    // first resize must occur little bit later 
    setTimeout(resizeOutsideSafeFrame, 100);
</script>

就这样.如果您想从iframe内部更改网站上的任何内容,您可以在自己的网站上编写自己的cmd代码
网站并从iframe内部调用此命令.

编辑1:
刚刚注意到,那个var divGptAdId =’%% PATTERN:url %%;不会以#hash方式在页面上返回div的正确id,所以现在需要给他一个正确的容器div id更改:

if(!divGptAdId) {
    return;
}

if(!divGptAdId) { 
    divGptAdId = 'div-gpt-ad-container-div-id-1';
}
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