<p>How can I prevent the image tag that calls the associated image from displaying if no image is associated with the record?</p>

<pre><code>&lt;%= image_tag @agent.avatar.url %&gt;
</code></pre>

<p>...gives me the text "Missing" if there is no image associated with that agent.  I want to test to see there is an image available first, then render the above tag if the test returns true.</p>

<p>Better yet, is there anyway for me to specify a default image if no image is specifically provided?</p>

Okay, so I got one part of it.
Specifying a default image happens in the model
```
```
has_attached_file :avatar, :default_url => '/images/brokers/agents/anonymous_icon.jpg'
```
```