anchor.diff:  <%= render 'comments/form', locals: {is_private: false} %>
   <br>
   
  -<% if Rsvp.find_by(event_id: @event.id, guest_id: current_user.id) || @event.host.id == current_user.id  %>
  +<% if Rsvp.find_by(event_id: @event.id, guest_id: current_user.id, confirmed: true) || @event.host.id == current_user.id  %>
     <h2>Private Comments</h2>
       <% @event.comments.each do |comment| %>
         <% if comment.is_private == true %>
  
positive.code:   <% end %>
  <h2>Add a private comment:</h2>
  <%= render 'comments/form2', locals: {is_private: true} %>
  <% end %>
negative.code:     <%= Rating.where(ratee_id: @event.host.id).average(:rating).to_f %>
      <br />
    <% @event.guests.each do |guest| %>
      <% if Rsvp.find_by(event_id: @event.id, guest_id: guest.id, confirmed: true) %>
          <br />
          <%= link_to image_tag(guest.gravatar_url(size: 30)), user_path(guest.id) %>
  