bookstore/app/views/books/index.html.erb

<div class='container'>
  <div class='row'>
    <h6 class='col s2'>Title</h6>
    <h6 class='col s3'>Authors</h6>
    <h6 class='col s1'>Price</h6>
    <h6 class='col s3'>Quantity</h6>

  </div>
  <% @books.each do |book| %>
    <div class='row'>
      <div class='col s2'>
        <%= link_to book.title, book %>
      </div>
      
      <div class='col s3'>
        <%= book.authors %>
      </div>

      <div class='col s1'>
        <%= book.price_with_currency %>
      </div>

      <div class='col s1'>
        <%= book.quantity %>
      </div>
      <div class='col s2'>
        <% if can_book_be_added?(book) %>
          <%= link_to 'Add', "book/#{book.id}/add_to_cart", method: :post, class: "btn" %>
        <% end %>
      </div>

      <% if current_user&.admin? %>
        <div class='col s2'>
          <%= book.published ? 'published' : 'unpublished' %>
        </div>
        <div class='col s1'>
          <%= link_to 'Edit', edit_book_path(book), class: "btn" %>
        </div>
      <% end %>
    </div>
  <% end %>
</div>