title: Django-haystack result filtering using attributes?
body: <p>Can someone show me an example of how to filter fulltext search results with django-haystack using attributes? I went through the tutorial on their website but am still mot sure on how to use haystack.</p>
  
  <p>For instance, let's say I have a
  class Product:</p>
  
  <pre><code>class Product(models.Model):
      title = models.CharField(max_length=200)
      description = models.TextField()
      category = models.CharField(max_length=10)
      color = models.CharField(max_length=10)
  </code></pre>
  
  <p>If I want to provide fulltext search on title &amp; description, and
  filtering (based on drop-down lists, not free text) on category and
  color - what do I need to do? Can I use the forms and views that come with haystack?</p>
  
  <p>Thanks. </p>