title: Setting gmaps to false, can't update geocoding location
body: <p>I'm using the great gem <a href="https://github.com/apneadiving/Google-Maps-for-Rails" rel="nofollow">gmaps4rails</a> to put a Google Map on my Ruby on Rails site. I'm following <a href="https://github.com/apneadiving/Google-Maps-for-Rails/wiki/Model-Customization" rel="nofollow">this page</a> on the wiki and trying to control when the calculated latitude and longitude should be updated, by setting the <code>gmaps</code> field to false. I can't seem to get it to work.</p>
  
  <p>In my User model, I've got this:</p>
  
  <pre><code>class User &lt; ActiveRecord::Base
     acts_as_gmappable
  
     attr_accessible :latitude, :longitude, :address, :gmaps
  
     def gmaps4rails_address
        address
     end
  </code></pre>
  
  <p>I'm sure I'm missing something simple here. I'm changing the <code>address</code> field to something new directly in the database using SQLite Database Browser, setting <code>latitude</code> and <code>longitude</code> to 0, and I've tried setting <code>gmaps</code> to false, f, 0, null (not sure what false is in SQLite)... then loading the map again by refreshing the page. It always shows the marker at 0,0..</p>
  
  <p>I thought all I had to do was define a <code>boolean</code> called <code>gmaps</code>, and when it is set to false, upon loading the map, it should recalculate the lat/long by geocoding the address. What am I missing?</p>
  
  <p>Thanks!</p>