DFP: Getting the current click-through URL

问题

I am setting up a DFP for multiple site, we have a set of line items and for each of it's creatives, the current click through is going to example.com (our own .com site), but since we are running multiple TLDs, we also want the click through URL to change accordingly. For example, when the ads is being displayed in the .jp, the click through should go to .jp.

In the DFP API reference, there's a function to change the click-through URL: http://support.google.com/dfp_premium/bin/answer.py?hl=en&answer=1650154&expand=adslot_details#setClickUrl

But in order to change our click-through URL, we also need to know what's the current URL. Example case: we need to get http://www.example.com/products/1 from the DFP adSlot in order to change it to http://www.example.jp/products/1.

I ran through trial and error using chrome web JS console and found a getClickUrl() function in the adSlot class, but it keeps returning empty string, for example:

googletag.defineSlot("/1234/Test_300x250", [300, 250], 'div-1').getClickUrl();
googletag.defineSlot("/1234/Test_300x250", [300, 250], 'div-1').addService(googletag.pubads()).getClickUrl();

Anyone have experience with this?

回答1:

If you have control over the creative, I think it would be a lot easier to do by passing custom variables. You use the setTargeting method to pass a custom variable. So your client-side code to display the ad would look like this:

googletag.defineSlot("/1234/Test_300x250", [300, 250], 'div-1').setTargeting('region','jp');

And then in your HTML creative you use a pattern macro to replace part of the click-through URL.

<a href="http://www.example.%%PATTERN:region%%">
<img src="http://www.example.%%PATTERN:region%%/image.jpeg">
</a>

And DFP will replace the macro with whatever value you pass via setTargeting.

回答2:

I haven't found a super simple way to do this - but it is possible.

Basically you can override an internal function in DFP and capture the content of the ad (and the URL) by getting into the DOM of the iframe.

Here is an example which should alert the URL of the ad (I've only tested this in chrome, so it may need tweaking to work in multiple browsers)

<html>
<head>
    <title>DFP test</title>

    <script type='text/javascript'>
        var googletag = googletag || {};
        googletag.cmd = googletag.cmd || [];
        (function() {
            var gads = document.createElement('script');
            gads.async = true;
            gads.type = 'text/javascript';
            var useSSL = 'https:' == document.location.protocol;
            gads.src = (useSSL ? 'https:' : 'http:') +
            '//www.googletagservices.com/tag/js/gpt.js';
            var node = document.getElementsByTagName('script')[0];
            node.parentNode.insertBefore(gads, node);
        })();
    </script>


    <script type="text/javascript">
        googletag.cmd.push(function() {
            var slot1 = googletag.defineSlot('/12345678/Test_300x250', [300, 250], 'div-gpt-ad-1340819095858-0').addService(googletag.pubads());

            slot1.oldRenderEnded = slot1.renderEnded;
            slot1.renderEnded = function(){
                alert(document.getElementById('div-gpt-ad-1340819095858-0').getElementsByTagName('iframe')[0].contentWindow.document.getElementsByTagName('a')[0].href.replace(/^.*&adurl=/,''));
                slot1.oldRenderEnded();
            };

            googletag.pubads().enableSingleRequest();
            googletag.enableServices();
        });
    </script>

</head>
<body>

    <div id='div-gpt-ad-1340819095858-0' style='width:266px; height:115px;'>
        <script type='text/javascript'>
            googletag.cmd.push(function() {
                googletag.display('div-gpt-ad-1340819095858-0');
            });
        </script>
    </div>

</body>
</html>

If you are using jQuery its a bit nicer to use something like:

$(adUnit).find('iframe:first').contents().find('a')

Any questions let me know.

来源：https://stackoverflow.com/questions/12380572/dfp-getting-the-current-click-through-url

标签

google-dfp