app/views/friends/_edit_friend_form.html.erb
<p>
<%= form_for friend, remote: true do |f| %>
<%= f.label :name %>
<%= f.text_field :name %><br>
<%= f.label :phone_number %>
<%= f.phone_field :phone_number %><br>
<%= f.label :email %>
<%= f.text_field :email %><br>
<%= f.hidden_field :user_id, :value => current_user.id %>
<%= f.submit "Edit Friend"%>
<% end %>
</p>