I want to take input from a textfield and turn it into an array of strings. After having submitted the "post", I want to display again the textfield, but with the array showed below.

I have a view that would look like:

<% form_tag "/list2array" do -%>
  <%= text_area_tag "mylist" %>
<div><%= submit_tag 'save' %></div>
<% end -%>


<% @myArray.each do |item| %>
    <%= item %>
<% end %>

And as a start for the controller:

class List2ArrayController < ApplicationController  
  def index
  end

  def save
   @myArray = params[:mylist].split("\r\n")
  end

end

However, after the post, I only get an empty textfield without values in the array from the previous POST.

Do I need to use the model layer for my experiment? How? Or do I need to modify my controller?