gistfile1.txt

<% @customers.all.each_with_index do |i, customer| %>
  <h1><%= "Customer #{i}: #{customer.name}" %></h1>
<% end %>

customers.collect { |c| c.address.city }.uniq 

<% form_for @customer %>
  <%= f.label :name %>
  <%= f.input :name %>
<% end %>