title: Custom name for params hash from Rails form_for
body: <p>Ordinarily, using <code>form_for(@foo)</code> means that on the back end of the form's action, you'll have the form data in <code>params[:foo]</code>, but in my case I'd like to have a custom namespace applied to these params, i.e. <code>params[:bar]</code>, not <code>params[:foo]</code>.</p>
  
  <p>I'm <em>not</em> talking about making the namespace longer by supplying the <code>:namespace</code> argument to the <code>form_for</code> method. To the contrary, my current name is overlong, and I want to shorten it. More importantly, I'm actually swapping a new model in place of an existing one, so the controller is filled with calls to <code>params[:quoter]</code>, whereas our new model supplies <code>params[:company_quoter_intf_quoter]</code>. Any ideas?</p>
  
  <p><em>Specs: Ruby 1.9.3, Rails 3.2.3</em></p>