title: undefined method `to_key' for -- NOT USING MONGO
body: <p>I found a gazillion answers for my issue if I was using Mongo, but none of the ones I see work out here since I am not using mongo.</p>
  
  <p>Basically I have a report_controller.rb that has a very simple method defined:</p>
  
  <pre><code>def donations_by_season
    @donations = Donation    
  end
  </code></pre>
  
  <p>and a very simple report/donations_by_season.html.erb as follows:</p>
  
  <pre><code>&lt;%= form_for @donations do |f| %&gt;
    Stuff Will go here... such as fields to select a date for the season we wish to view.
  &lt;% end %&gt;
  </code></pre>
  
  <p>There is no report model, just a controller and views.</p>
  
  <p>But when I attempt to view /reports/donations_by_season
  I immediately get:</p>
  
  <blockquote>
    <p>undefined method <code>to_key' for #&lt;Class:0x00000114d85918&gt;</code></p>
  </blockquote>
  
  <p>What should I do to fix that? Am I doing my form incorrectly since there is no model associated with reports?</p>