_tree_view.html.erb

<% if defined? project %>
    <%  
        components = retrieve_components(project)
        previous_component = {}
        components.each do |component| 
    %>

    <%= open_or_close_unordered_list(previous_component, component).html_safe %>

    <% if !containsLetter(component.description) %>
        <li>
            <a href="#">
                <i class="fa <%= $component_symbol_hash[component.name] %>"></i>
                <span class="nav-label"><%= truncate(component.name, length: 20) %></span>
                <span class="fa arrow"></span>
            </a>
    <% else %>
        <li class=""><a href="#"><%= component.name %></a></li>
    <% end %>

    <% previous_component = component %>
    <% end %>
<% end %>