title: How to access nested params
body: <p>I would like to get some nested params. I have an Order that has many Items and these Items each have a Type. i would like to get the type_id parameter from the controllers create method.</p>
  
  <pre><code>@order = Order.new(params[:order])
  @order.items.each do |f|
    f.item_type_id = Item_type.find_by_name(f.item_type_id).id
  end
  </code></pre>
  
  <p>The reason is that i want the user to be able to create new item_types in the view. When they do that i use an AJAX call add them to the db. When they post the form i get names of the item_type in the item_type_id parameter and i want to find the correct item_type and set the id to that</p>