ruby on rails - Comments and Rating section no longer showing up; -

i working on creating test shoe store website 1 of classes. had added comment section , rating system new shoes. reason comment , rating section no longer viewable.

here product show page

   <p id="notice"><%= notice %></p>     <div class="show-buttons" id="show1">     <%= link_to 'edit', edit_product_path(@product), class: "btn btn-    success btn-xs"  %> |      <%= link_to 'back', products_path, class: "btn btn-primary btn-xs" %>   </div>   <div class="pay button">   <%= form_tag "/payments/create" %>   <%= render partial: "shared/stripe_checkout_button" %>   <%= hidden_field_tag(:product_id, @product.id) %> </div> <p>   <strong>name:</strong>   <%= @product.name %> </p>  <p>   <strong>description:</strong>   <%= @product.description %> </p>  <p>   <strong>image url:</strong>   <%= @product.image_url %> </p>  <p>average rating:    <div class="rated" data-score="<%= @product.average_rating %>"></div>  </p>  <%= render 'new_comment' %>     <%= render 'comment' %>     <%= will_paginate @comments %>    </div>   <% end %> 

here _comment.html.erb

<div class="container">     <div class="row">         <div class="product-reviews">         <% @comments.each |comment| %>         <div class="row">             <hr>           <p><%= comment.user.first_name %> <small><em><%= "# {time_ago_in_words(comment.created_at)} ago" %></em></small></p>         <% if signed_in? && current_user.admin? %>             <%= link_to ('<span class="glyphicon glyphicon-remove">  </span>').html_safe, product_comment_path(@product, comment), method: :delete, data: { confirm: 'are sure?' } %>         <% end %>            <div class="rated" data-score="<%= comment.rating %>"></div>         <p><%= "rating: #{comment.rating}/5" %></p>         <p><%= comment.body %></p>     </div>     <% end %>     </div> </div> 

my _new_comment.html.erb

<% if signed_in? %>   <h4>add review:</h4>   <%= form_for([@product, @product.comments.build]) |f| %>     <p>   <%= f.label :body, "comments" %><br>   <%= f.text_area :body %> </p> <p>  <%= f.label :rating %><br>   <div class= "rating"></div> </p> <%= f.submit "submit", class: "btn btn-default" %>     </p>   <% end %> <% end %> 

and product.html.erb

<div class="container">    <div class="row">     <div class="col-md-4">       <div class="productbox">          <div class="imgthumb img-responsive">           <%= image_tag(product.image_url, :class => 'list_image') %>         </div>         <div class="caption">           <h3><%= product.name %></h3>            </div>        </div><!--end productbox-->       </div><!--end columns-->           <div class="col-md-8" id="descriptionp">           <p><%= product.description %><br><br>           <%= product.color %><br><br>           €<%= product.price %><br><br>           <%= link_to 'more info', product %><br><br>            <% if signed_in? && current_user.admin? %>           <%= link_to 'edit', edit_product_path(product) %> |            <%= link_to 'destroy', product, method: :delete, data: { confirm: 'are sure?' } %>           <% end %>          </p>          </div>       </div><!--/row-->   </div><!--/container --> <hr> 

any assistance on why can no longer view comments or rating page appreciated.