Basic File Question

I'm a data person and some of the basics on the front end seem to escape me. I am merely trying to upload a file to the backend. Everything works except that what is uploaded is not the file but the reference to the file, i.e. #<File:0x57d79b8>

It's got to be a simple thing I am missing...

This is the form

<% form_for(@workstmt,:url=>{:action=>'create'}, :html => {:multipart=>true}) do |f| %>   <p>     <b>Project name</b><br />     <%= f.text_field :project_name %>   </p>

  <p>     <b>File name</b><br />     <%= f.text_field :file_name %>   </p>

  <p>     <b>Sow</b><br />     <%= f.text_field :sow_id %>   </p>

  <p>     <b>Workstmt</b><br />     <%= f.file_field :workstmt %>   </p>

  <p>     <%= f.submit "Create" %>   </p> <% end %>

and the controller snippet is the default from the scaffold

def create     @workstmt = Workstmt.new(params[:workstmt])     respond_to do |format|       if @workstmt.save         flash[:notice] = 'Workstmt was successfully created.'         format.html { redirect_to(@workstmt) }         format.xml { render :xml => @workstmt, :status => :created, :location => @workstmt }       else         format.html { render :action => "new" }         format.xml { render :xml => @workstmt.errors, :status => :unprocessable_entity }       end     end

This is the controller code that will work (with workstmt_file) being the name of the file_field comng from the form

   @workstmt = Workstmt.new    @workstmt.file_name = params[:workstmt] [:workstmt_file].original_filename        @workstmt.content_type = params[:workstmt] [:workstmt_file].content_type    @workstmt.workstmt = params[:workstmt][:workstmt_file].read