Survey Form problem

[bdhohn]

when I try to view the page after completing the Survey Form exercise, I'm getting an error . . . undefined method

undefined method `type_cast_from_database' for "string":String

Extracted source (around line #47):

  <div class="row">
    <div class="col-md-4 col-md-offset-4">
      <%= f.input :favorite, :collection => Visitor::IMAGE_LABELS,
        label: false, as: :select, prompt: 'Select a favorite...' %>
    </div>
  </div>

I double-checked that I had the visitor.rb, visitors_controller.rb and the routes.rb files exactly as written

Not sure what to try next

[romenigld]

I have this similar problem and don't know what to do!