<%
if @user
%>
<h1>Welcome <% @user.username %> </h1>
<%
else
%>
<h1>Welcome Guest</h1>
<% link_to 'Login', :controller => 'users', :action => 'login' %>
<%
end
%>
<!-- the above section does not see the @user variable correctly -->
<h1>Listing books</h1>

<table>
  <tr>
    <th>Title</th>
    <th>Author</th>
    <th>Cover</th>
    <th>Price</th>
    <th>Stock</th>
  </tr>

<% @books.each do |book| %>
  <tr>
    <td><%=h book.title %></td>
    <td><%=h book.author %></td>
    <td><%=h book.cover %></td>
    <td><%=h book.price %></td>
    <td><%=h book.stock %></td>
<!-- The code bellow works as expected, having the correct value for @user -->
    <%
    if @user
    %>
    <td><%= link_to 'Show', book %></td>
    <% end %>
    <%
    if @user
        if @user.admin == 1
    %>
    <td><%= link_to 'Edit', edit_book_path(book) %></td>
    <td><%= link_to 'Delete', book, :confirm => 'Are you sure?', :method => :delete %></td>
    <%
      end
    end
    %>
  </tr>
<% end %>
</table>

<br />
<%
if @user
  if @user.admin == 1
%>
<%= link_to 'New book', new_book_path %>
<%
  end
end
%>