app/views/contacts/_form.html.erb
<%= form_for(contact) do |f| %>
<%= error_messages_for(contact) %>
<div class="field">
<%= f.label :first_name %><br>
<%= f.text_field :first_name %>
</div>
<div class="field">
<%= f.label :last_name %><br>
<%= f.text_field :last_name %>
</div>
<div class="field">
<%= f.label :title %><br>
<%= f.text_field :title %>
</div>
<div class="field">
<%= f.label :company_name %><br>
<%= f.text_field :company_name %>
</div>
<div class="field">
<%= f.label :phone_office %><br>
<%= f.telephone_field :phone_office %>
</div>
<div class="field">
<%= f.label :phone_mobile %><br>
<%= f.telephone_field :phone_mobile %>
</div>
<div class="field">
<%= f.label :email %><br>
<%= f.email_field :email %>
</div>
<div class="actions">
<%= f.submit %>
</div>
<% end %>