From: Joshua Muheim <forum@...>
Date: 2008-08-28T20:39:38+09:00
Subject: Sort an array based on an attribute of its objects

Hi all

The title of this topic is not very good, but I didn't really know how
to describe it in just a few words...

So here is what I need to do:

I have a array of some objects:

[obj1, obj2, obj3, obj4]

All objects have a method "status" that returns a status object, like
"open", "request", "cancelled", "completed" etc.

Now I'd like to sort the elements after theses statuses into a new hash,
so in the end it should look something like this:

{status1 => [obj1, obj3],
status3 => [obj2],
status4 => [obj4]}

I need this because I want then to iterate through the hash and display
an HTML list grouped by status:

<ul>
  <li>
    Request:
    <ul>
      <li>Object 1</li>
      <li>Object 3</li>
    </ul>
  </li>
  <li>
    Cancelled:
    <ul>
      <li>Object 2</li>
    </ul>
  </li>
  ... and so on...
</ul>

What's an elegant way to do this? :-)

Thanks a lot,
Josh
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