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POImproving a star rating system
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  1. POImproving a star rating system
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    copied!<p>I made a star rating system for a school project and need some help improving it a bit. It's a fairly simple setup: index.php contains list-items (content is fetched from a DB) with an image and a div holding the stars for rating. Each star is a link that triggers a function which saves the rating in a database.</p> <p>Here's <a href="http://kristianmaar.dk/projekter/s3p2/v3/" rel="nofollow">the link</a>! for starters.</p> <p>If you click on any star, the first click will result in a green check mark on the first list-item. The idea is that this check mark will appear on each list-item when rated. That's where I need you guys to point me in the right direction. First of all I know I can't echo out multiple divs with the same id, but I had to in order for the ajax function to work (document.getElementById("rated")). Any ideas on how to solve this?</p> <p><strong>CODE</strong></p> <p>insert_receive.php:</p> <pre><code>&lt;?php session_start(); $sess = session_id(); $mysqli = new mysqli("", "", "", ""); if (mysqli_connect_errno()) { printf("Connect failed: %s\n", mysqli_connect_error()); exit(); } $stmt = $mysqli-&gt;prepare("REPLACE INTO Ratings (projId_fkey, sessionId, rvalue) VALUES ('".$_GET['projId']."','".$sess."','".$_GET['rating']."')"); $stmt-&gt;execute(); printf("✔"); ?&gt; </code></pre> <p>ajax_framework.js:</p> <pre><code>function saveClick(rating,projId) { var xmlhttp; if (window.XMLHttpRequest) {// code for IE7+, Firefox, Chrome, Opera, Safari xmlhttp=new XMLHttpRequest(); } else {// code for IE6, IE5 xmlhttp=new ActiveXObject("Microsoft.XMLHTTP"); } xmlhttp.onreadystatechange=function() { if (xmlhttp.readyState==4 &amp;&amp; xmlhttp.status==200) { document.getElementById("rated").innerHTML=xmlhttp.responseText; } } xmlhttp.open("GET","insert_receive.php?rating=" + rating + "&amp;projId=" + projId,true); xmlhttp.send(""); } </code></pre> <p>index.php: (the part that matters)</p> <pre><code>&lt;?php $select = "SELECT id, projName, location FROM Projects"; if($result = $mysqli-&gt;query($select)) { while($row = $result-&gt;fetch_assoc()) { echo '&lt;li id="'.$row['id'].'"&gt;'; echo '&lt;h1 class="header"&gt;'.$row['projName']."&lt;/h1&gt;"; echo '&lt;img src="'.$row['location'].'" alt=""/&gt;'; echo '&lt;div class="rating"&gt;'; echo '&lt;a href="#" onclick="saveClick(5, '.$row['id'].')"&gt;'.★★★★★."&lt;/a&gt;"; echo '&lt;a href="#" onclick="saveClick(4, '.$row['id'].')"&gt;'.★★★★."&lt;/a&gt;"; echo '&lt;a href="#" onclick="saveClick(3, '.$row['id'].')"&gt;'.★★★."&lt;/a&gt;"; echo '&lt;a href="#" onclick="saveClick(2, '.$row['id'].')"&gt;'.★★."&lt;/a&gt;"; echo '&lt;a href="#" onclick="saveClick(1, '.$row['id'].')"&gt;'.★."&lt;/a&gt;"; echo '&lt;div id="rated"&gt;'.""."&lt;/div&gt;"; echo "&lt;/div&gt;"; echo "&lt;/li&gt;"; } } ?&gt; </code></pre>
 

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