<%= form_for document, url: documents_path, html: { multipart: true } do |f| %>
<% if document.errors.any? %>
<%= pluralize(document.errors.count, "error") %> prohibited this document from being saved:
<% document.errors.full_messages.each do |message| %>
- <%= message %>
<% end %>
<% end %>
<%= f.label :doc %>
<%= f.file_field :doc %>
<%= f.submit %>
<% end %>