<%= form_for(@user) do |f| %>
<%= f.label :first_name %>
<%= f.text_field :first_name %>
<%= f.label :last_name %>
<%= f.text_field :last_name %>
<%= f.label :email %>
<%= f.email_field :email %>
<%= f.submit "Sign up" %>
<% end %>
What is wrong? It is not accepted!