app/views/accounts/_form.html.erb
<%= form_for(@account) do |f| %>
<% if @account.errors.any? %>
<div id="error_explanation">
<h2><%= pluralize(@account.errors.count, "error") %> prohibited this account from being saved:</h2>
<ul>
<% @account.errors.full_messages.each do |message| %>
<li><%= message %></li>
<% end %>
</ul>
</div>
<% end %>
<div class="field">
<%= f.label :name %><br>
<%= f.text_field :name %>
</div>
<div class="field">
<%= f.label :about %><br>
<%= f.text_area :about %>
</div>
<div class="actions">
<%= f.submit %>
</div>
<% end %>