title: Form submissions results in invalid byte sequence in utf-8 erro
body: <p>I have form that has a good number of string fields. In some form submits, it results in <code>invalid byte sequence in utf-8</code> error.</p>
  
  <p>The error occurs when i try to save the data like this:</p>
  
  <pre><code>@event = Event.new(params[:event])
  @event.save
  </code></pre>
  
  <p>In my application.rb, I have these two lines for encoding. </p>
  
  <pre><code>Encoding.default_external = Encoding::UTF_8
  Encoding.default_internal = Encoding::UTF_8
  </code></pre>
  
  <p>Am I missing anything? Please help.</p>