enable Google Analytics on pivots_block to prepare for the next improvement
>>> [!note] Migrated issue
<!-- Drupal.org comment -->
<!-- Migrated from issue #424522. -->
Reported by: [danithaca](https://www.drupal.org/user/112233)
>>>
<p>We have a major improvement to the pivots_block. It's our last improvement to the co-citation line of idea before we try out other alternative module recommendation algorithms. More details can be found here <a href="http://mrzhou.cms.si.umich.edu/roadmap-pivotsblock-module-recommendation-do">http://mrzhou.cms.si.umich.edu/roadmap-pivotsblock-module-recommendation-do</a></p>
<p>Before launching the new improvement, I'd like to request turning on Google Analytics to monitor clicks on the pivots_block. It's the only way we can test whether the improvement is indeed helpful to end users, and it also gives us feedback for further improvements.</p>
<p>The patch is based for the HEAD branch (version 1.12). It has 2 code changes:</p>
<p>1. Inject GA code for the pivots_block pageview, followed the example from <a href="http://drupal.org/node/284599">http://drupal.org/node/284599</a></p>
<div class="codeblock">
<pre><span style="color: #000000"><span style="color: #0000BB"><?php<br></span><span style="color: #007700">function </span><span style="color: #0000BB">pivots_block_preprocess_page</span><span style="color: #007700">(&</span><span style="color: #0000BB">$variables</span><span style="color: #007700">) {<br> if (</span><span style="color: #0000BB">arg</span><span style="color: #007700">(</span><span style="color: #0000BB">0</span><span style="color: #007700">) == </span><span style="color: #DD0000">'node' </span><span style="color: #007700">&& </span><span style="color: #0000BB">is_numeric</span><span style="color: #007700">(</span><span style="color: #0000BB">arg</span><span style="color: #007700">(</span><span style="color: #0000BB">1</span><span style="color: #007700">))) {<br> </span><span style="color: #0000BB">$node_id </span><span style="color: #007700">= </span><span style="color: #0000BB">arg</span><span style="color: #007700">(</span><span style="color: #0000BB">1</span><span style="color: #007700">);<br> </span><span style="color: #0000BB">$node </span><span style="color: #007700">= </span><span style="color: #0000BB">node_load</span><span style="color: #007700">(</span><span style="color: #0000BB">$node_id</span><span style="color: #007700">);<br> if (</span><span style="color: #0000BB">$node</span><span style="color: #007700">-></span><span style="color: #0000BB">type </span><span style="color: #007700">== </span><span style="color: #DD0000">'project_project'</span><span style="color: #007700">) {<br> </span><span style="color: #FF8000">// inject GA tracking code when pivots_block is <br> </span><span style="color: #007700">if (</span><span style="color: #0000BB">strpos</span><span style="color: #007700">(</span><span style="color: #0000BB">$variables</span><span style="color: #007700">[</span><span style="color: #DD0000">'right'</span><span style="color: #007700">], </span><span style="color: #DD0000">'id="block-pivots_block-0"'</span><span style="color: #007700">) !== </span><span style="color: #0000BB">FALSE</span><span style="color: #007700">) {<br> global </span><span style="color: #0000BB">$_pivots_block_pid_double</span><span style="color: #007700">;<br> </span><span style="color: #0000BB">$injection </span><span style="color: #007700">= </span><span style="color: #DD0000">"pageTracker._trackEvent('PivotsPageview_</span><span style="color: #007700">${</span><span style="color: #0000BB">_pivots_block_pid_double</span><span style="color: #007700">}</span><span style="color: #DD0000">', '</span><span style="color: #0000BB">$node_id</span><span style="color: #DD0000">');"</span><span style="color: #007700">;<br> </span><span style="color: #0000BB">$variables</span><span style="color: #007700">[</span><span style="color: #DD0000">'closure'</span><span style="color: #007700">] = </span><span style="color: #0000BB">preg_replace</span><span style="color: #007700">(</span><span style="color: #DD0000">'/(var pageTracker = _gat._getTracker\("UA-\d{4,}-\d+"\);)/'</span><span style="color: #007700">, </span><span style="color: #DD0000">"$1</span><span style="color: #0000BB">$injection</span><span style="color: #DD0000">"</span><span style="color: #007700">, </span><span style="color: #0000BB">$variables</span><span style="color: #007700">[</span><span style="color: #DD0000">'closure'</span><span style="color: #007700">]); <br> }<br> }<br> }<br>}<br></span><span style="color: #0000BB">?></span></span></pre></div>
<p>2. Track clicks event</p>
<div class="codeblock">
<pre><span style="color: #000000"><span style="color: #0000BB"><?php<br> $items</span><span style="color: #007700">[</span><span style="color: #0000BB">$position</span><span style="color: #007700">] = </span><span style="color: #0000BB">l</span><span style="color: #007700">(</span><span style="color: #0000BB">$item</span><span style="color: #007700">[</span><span style="color: #DD0000">'title'</span><span style="color: #007700">], </span><span style="color: #DD0000">"node/</span><span style="color: #007700">{</span><span style="color: #0000BB">$item</span><span style="color: #007700">[</span><span style="color: #DD0000">'nid'</span><span style="color: #007700">]}</span><span style="color: #DD0000">"</span><span style="color: #007700">, array( </span><span style="color: #DD0000">'attributes' </span><span style="color: #007700">=> array(<br> </span><span style="color: #DD0000">"onClick" </span><span style="color: #007700">=> </span><span style="color: #DD0000">"javascript: try{pageTracker._trackEvent('PivotsClick_</span><span style="color: #0000BB">$pivot_id</span><span style="color: #DD0000">', '</span><span style="color: #0000BB">$node_id</span><span style="color: #DD0000">', '</span><span style="color: #007700">${</span><span style="color: #0000BB">item</span><span style="color: #007700">[</span><span style="color: #DD0000">'nid'</span><span style="color: #007700">]}</span><span style="color: #DD0000">', '</span><span style="color: #0000BB">$position</span><span style="color: #DD0000">');} catch(err) {}"<br> </span><span style="color: #007700">)));<br></span><span style="color: #0000BB">?></span></span></pre></div>
>>> [!note] Pre-migration files
- [pivots\_block.module.patch](https://www.drupal.org/files/issues/pivots_block.module_12.patch)
>>>
issue
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