<%= form_for(@customer) do |f| %>
<% if @customer.errors.any? %>
<%= pluralize(@customer.errors.count, "error") %> prohibited this customer from being saved:
<% @customer.errors.full_messages.each do |msg| %>
- <%= msg %>
<% end %>
<% end %>
<% @customer.contracts.each do |contract| %>
<%= f.fields_for :contracts, contract do |contract_field| %>
<%= contract_field.text_field :date %>
<%= contract_field.text_field :expire %>
<%= contract_field.text_field :payment %>
<%= contract_field.text_field :amount %>
<%= contract_field.text_field :detail, class: "long" %>
<% end %>
<% end %>
<%= f.submit "更新", :name => "contract_update" %>
<% end %>