class unprocessable

def update
  @<%= singular_table_name %> = <%= orm_class.find(class_name, "params[:id]") %>
  respond_to do |format|
    if @<%= orm_instance.update_attributes("params[:#{singular_table_name}]") %>
      format.html { redirect_to(@<%= singular_table_name %>, :notice => '<%= human_name %> was successfully updated.') }
      format.xml  { head :ok }
    else
      format.html { render :action => "edit" }
      format.xml  { render :xml => @<%= orm_instance.errors %>, :status => :unprocessable_entity }
    end