Related Posts

Have you ever wanted a feature under your post that shows related posts from your blog? I found this way to do it from JackBook.com. It was originally designed by Hoctro with modifications by JackBook. This uses labels/categories that you already have in place to show Related Posts by Category.

There are two steps to this hack. But before you begin, be sure to save your template!

Step 1: Go to your Dashboard | Layout | Edit HTML | check Expand Widget Templates and locate this code:

<data:post.body/>

Step 2: Place this code after the code you just located:

<b:if cond='data:blog.pageType == "item"'>
<div class='similiar'>
<!-- ***http://hoctro.blogspot.com***Jan,2007**** -->
<!-- ***Related Articles by Labels - Take Two*** -->

<!--
Modified by JackBook.Com to make it easier to use.
1. Now, users don't need to change anything to use this widget. just copy and paste, and done!
2. The current article will also be listed, now it's no more.
-->

<div class='widget-content'>
<h3>Related Posts by Categories</h3>
<div id='data2007'/><br/><br/>
<div id='hoctro'>
Widget by <u><a href='http://hoctro.blogspot.com'>Hoctro</a></u> | <u><a href='http://www.jackbook.com/' title='Related Posts on Blogger Modified by JackBook.Com. Read More?'>Jack Book</a></u>
</div>
<script type='text/javascript'>

var homeUrl3 = &quot;<data:blog.homepageUrl/>&quot;;
var maxNumberOfPostsPerLabel = 4;
var maxNumberOfLabels = 10;

maxNumberOfPostsPerLabel = 100;
maxNumberOfLabels = 3;


function listEntries10(json) {
var ul = document.createElement(&#39;ul&#39;);
var maxPosts = (json.feed.entry.length &lt;= maxNumberOfPostsPerLabel) ?
json.feed.entry.length : maxNumberOfPostsPerLabel;
for (var i = 0; i &lt; maxPosts; i++) {
var entry = json.feed.entry[i];
var alturl;

for (var k = 0; k &lt; entry.link.length; k++) {
if (entry.link[k].rel == &#39;alternate&#39;) {
alturl = entry.link[k].href;
break;
}
}
var li = document.createElement(&#39;li&#39;);
var a = document.createElement(&#39;a&#39;);
a.href = alturl;

if(a.href!=location.href) {
var txt = document.createTextNode(entry.title.$t);
a.appendChild(txt);
li.appendChild(a);
ul.appendChild(li);
}
}
for (var l = 0; l &lt; json.feed.link.length; l++) {
if (json.feed.link[l].rel == &#39;alternate&#39;) {
var raw = json.feed.link[l].href;
var label = raw.substr(homeUrl3.length+13);
var k;
for (k=0; k&lt;20; k++) label = label.replace(&quot;%20&quot;, &quot; &quot;);
var txt = document.createTextNode(label);
var h = document.createElement(&#39;b&#39;);
h.appendChild(txt);
var div1 = document.createElement(&#39;div&#39;);
div1.appendChild(h);
div1.appendChild(ul);
document.getElementById(&#39;data2007&#39;).appendChild(div1);
}
}
}
function search10(query, label) {

var script = document.createElement(&#39;script&#39;);
script.setAttribute(&#39;src&#39;, query + &#39;feeds/posts/default/-/&#39;
+ label +
&#39;?alt=json-in-script&amp;callback=listEntries10&#39;);
script.setAttribute(&#39;type&#39;, &#39;text/javascript&#39;);
document.documentElement.firstChild.appendChild(script);
}

var labelArray = new Array();
var numLabel = 0;

<b:loop values='data:posts' var='post'>
<b:loop values='data:post.labels' var='label'>
textLabel = &quot;<data:label.name/>&quot;;

var test = 0;
for (var i = 0; i &lt; labelArray.length; i++)
if (labelArray[i] == textLabel) test = 1;
if (test == 0) {
labelArray.push(textLabel);
var maxLabels = (labelArray.length &lt;= maxNumberOfLabels) ?
labelArray.length : maxNumberOfLabels;
if (numLabel &lt; maxLabels) {
search10(homeUrl3, textLabel);
numLabel++;
}
}
</b:loop>
</b:loop>
</script>
</div>

</div>
</b:if>

Save your work and all is done.