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    <p>The way you call <code>ev</code>, <code>this</code> will refer to the global object (<code>window</code> in browsers). <a href="https://developer.mozilla.org/en/JavaScript/Reference/Operators/this" rel="nofollow">MDN has a nice summary about <code>this</code>.</a></p> <p>You have to explicitly set <code>this</code>, using <a href="https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Function/call" rel="nofollow"><code>call</code> <em><sup>[MDN]</sup></em></a> or <a href="https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Function/apply" rel="nofollow"><code>apply</code> <em><sup>[MDN]</sup></em></a>, or just pass the callback to <a href="http://api.jquery.com/each/" rel="nofollow"><code>each</code> <em><sup>[docs]</sup></em></a>:</p> <pre><code>$.fn.test = function( ev ) { return this.each(ev); }; </code></pre> <p>By using <code>each</code>, you make sure that <code>this</code> inside the callback you pass only refers to <strong>one</strong> DOM element, just like other callbacks work, like the one you pass to <code>.click()</code>.</p> <p>Otherwise, inside a plugin method, <code>this</code> refers to <em>all selected elements</em>. So this would be <strong>wrong</strong> (or at least different from typical jQuery callbacks):</p> <pre><code>$.fn.test = function( ev ) { ev.call(this); return this; }; </code></pre> <p>On the other side, this would be OK as well, but is unnecessarily verbose:</p> <pre><code>$.fn.test = function( ev ) { return this.each(function() { ev.call(this); }); }; </code></pre> <p>Though you have to do this if you wanted to pass custom arguments to your callback (<code>ev</code>), otherwise <code>ev</code> receives the same arguments as the <code>each</code> callback.</p>
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    1. USFelix Kling
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    1. COThanks. I'm amazed how I missed that.
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    2. CODemo: http://jsfiddle.net/LbzKX/
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    3. CO+1 for a well documented answer
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Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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