title: Update a column, all rows
body: <p>I added a new column to my table but I forgot to add the <code>:default</code> option. Now I want to populate that column on every single row.</p>
  <p>Is there a way to do with using the console? I've been searching google for the past hour but I can't find anything.</p>
  <p>I know how to do it for a single object, but not for all rows of a model.</p>
  <pre><code>Foo.find(1).update_attribute(:myattribute, 'value')
  </code></pre>