下拉菜单项链接在rails和bootstrap4中不起作用

Question

我有一个带有几个下拉菜单的导航栏。切换功能正常，导航栏在较小的屏幕上折叠，除下拉列表中的链接外，其他所有功能均可用。谁能看到这是怎么回事？另外，我拥有的任何其他类仅用于着色。我没有在此处包括CSS，因为我认为这与问题无关。

<!-- header -->
<header>
  <!-- navbar -->
  <nav class="navbar navbar-expand-md fixed-top nav-menu navbar-top-image">
    <%= link_to root_path do %>
            <%= image_tag 'yarnn-text-logo.png', width: 120, alt: 'Yarnn icon', id: "logo" %>
        <% end %>
    <button class="navbar-toggler bg-dark" type="button" data-toggle="collapse" data-target="#myNavbar">
    <span class="navbar-toggler-icon mt-2">   
        <i class="fa fa-navicon text-danger"></i>
    </span>
    </button>
    <div class="collapse navbar-collapse justify-content-end text-uppercase scrollable" id="myNavbar">
      <ul class="navbar-nav">
          <% if user_signed_in? %>
              <li class="nav-item dropdown" data-toggle="dropdown" data-target="#dashboard_drop"><a class="nav-link text-light m-2 dropdown-toggle" href="#">
                <i class="fas fa-cog text-light mr-2"></i><%= current_user.username %></a>
              <div class="dropdown-menu p-2" id="dashboard_drop">
                <%= link_to "Dashboard", dashboard_path, :class => "dropdown-item navdrop-link" %>
                <%= link_to "Profile", user_path(current_user), :class => "dropdown-item navdrop-link" %>
                <%= link_to "Edit Account", edit_registration_path(current_user), :class => "dropdown-item navdrop-link" %>
                <div class="dropdown-divider"></div>
                    <%= link_to "My Station", station_path(current_user), :class => "dropdown-item navdrop-link" %>
                    <%= link_to "My Downloads", purchases_path, :class => "dropdown-item navdrop-link" %>
                    <div class="dropdown-divider"></div>
                    <%= link_to "Upload Track", new_track_path, :class => "dropdown-item navdrop-link" %>
                <%= link_to "Create Album", new_album_path, :class => "dropdown-item navdrop-link" %>
                <%= link_to "Create Blog Post", new_blog_path, :class => "dropdown-item navdrop-link" %>
                <div class="dropdown-divider"></div>
                <!--- Seller Stuff --->
                <% if current_user.uid? %>
                    <%= link_to "Sell Something", new_listing_path, :class => "dropdown-item navdrop-link" %>
                    <%= link_to "Sales", sales_path, :class => "dropdown-item navdrop-link" %>
                    <%= link_to "Payout", payout_method_path, :class => "dropdown-item navdrop-link" %>
                <% else %>
                    <%= link_to "Become a Seller", payout_method_path, :class => "dropdown-item navdrop-link" %>
                <% end %>
                <div class="dropdown-divider"></div>
                    <%= link_to  destroy_user_session_path, method: :delete, :class => "dropdown-item navdrop-link current" do %>
                    <i class="fas fa-sign-out-alt text-dark fa-lg"></i> Log Out
              <% end %>
              </div>
            </li>
            <li class="nav-item">
                <%= link_to notifications_path(current_user), :class => "nav-link text-light m-2" do %>
                    <i class="fas fa-comments text-light mr-1"></i>
                    <% if @notifications.count > 0 %>
                        <span class="site-blue"><%= @notifications.count %></span>
                    <% end %>
                <% end %>
            </li>
            <li class="nav-item dropdown" data-toggle="dropdown" data-target="#nav_explore"><a class="nav-link text-light m-2 dropdown-toggle" href="#">
                <i class="fas fa-map-signs text-light"></i> Explore</a>
                <div class="dropdown-menu p-2" id="nav_explore">
                    <%= link_to "Albums", albums_path, :class => "dropdown-item navdrop-link" %>
                  <%= link_to "Tracks", tracks_path, :class => "dropdown-item navdrop-link" %>
                  <%= link_to "Genres", genres_path, :class => "dropdown-item navdrop-link" %>
                  <%= link_to "Blog Posts", blogs_path, :class => "dropdown-item navdrop-link" %>
                </div>
            </li>
            <li class="nav-item">
                <%= link_to listings_path, :class => "nav-link text-light m-2 menu-item" do %>
                    <i class="fas fa-shopping-cart text-light"></i> Marketplace
                <% end %>
            </li>
            <%= link_to  destroy_user_session_path, method: :delete, :class => "nav-link text-light m-2 menu-item" do %>
                <i class="fas fa-sign-out-alt site-red fa-lg"></i>
            <% end %>
          <% end %>
      </ul>
    </div>
  </nav>
  <!-- end of navbar -->
</header>
<!-- end of header -->

Answer 1

我可以使用它，但是这次必须使用Bootstrap文档中的按钮来完全重建功能。我认为功能是重要的部分，以后可以根据自己的喜好对其进行样式设置。这也是我完整的导航栏，我早些时候省略了一些无关紧要的元素以使其不那么密集。

<!-- header -->
<header>
  <!-- navbar -->
  <nav class="navbar navbar-expand-md fixed-top nav-menu navbar-top-image">
    <%= link_to root_path do %>
            <%= image_tag 'yarnn-text-logo.png', width: 120, alt: 'Yarnn icon', id: "logo" %>
        <% end %>
    <button class="navbar-toggler bg-dark" type="button" data-toggle="collapse" data-target="#myNavbar">
      <span class="navbar-toggler-icon mt-2">   
               <i class="fa fa-navicon text-danger"></i>
            </span>
    </button>
    <div class="collapse navbar-collapse justify-content-end text-uppercase scrollable" id="myNavbar">
      <ul class="navbar-nav">
        <% unless user_signed_in? %>

          <div class="dropdown">
                      <button class="btn btn-default dropdown-toggle m-2" type="button" id="dropdownMenu1" data-toggle="dropdown" aria-haspopup="true" aria-expanded="true">
                        EXPLORE
                        <span class="caret"></span>
                      </button>
                      <ul class="dropdown-menu p-2" aria-labelledby="dropdownMenu1">
                        <li class="dropdown-item navdrop-link"><%= link_to "Albums", albums_path %></li>
                        <li class="dropdown-item navdrop-link"><%= link_to "Tracks", tracks_path %></li>
              <li class="dropdown-item navdrop-link"><%= link_to "Genres", genres_path %></li>
              <li class="dropdown-item navdrop-link"><%= link_to "Blog Posts", blogs_path %></li>
                      </ul>
                    </div>

            <li class="nav-item">
                <%= link_to listings_path, :class => "nav-link text-light m-2 menu-item" do %>
                          <i class="fas fa-shopping-cart text-light"></i> Marketplace
                        <% end %>
            </li>

            <li class="nav-item">
              <%= link_to "Login", new_user_session_path, :class => "nav-link text-light m-2 menu-item" %>
            </li>

            <li class="nav-item">
              <%= link_to "Register", new_user_registration_path, :class => "nav-link text-light m-2 menu-item" %>
            </li>
          <% else %>

              <div class="dropdown">
                          <button class="btn btn-default dropdown-toggle m-2" type="button" id="dropdownMenu1" data-toggle="dropdown" aria-haspopup="true" aria-expanded="true">
                            <i class="fas fa-cog text-light mr-2"></i><%= current_user.username %>
                            <span class="caret"></span>
                          </button>
                          <ul class="dropdown-menu p-2" aria-labelledby="dropdownMenu1">
                            <li class="dropdown-item navdrop-link"><%= link_to "Dashboard", dashboard_path %></li>
                            <li class="dropdown-item navdrop-link"><%= link_to "Profile", user_path(current_user) %></li>
                  <li class="dropdown-item navdrop-link"><%= link_to "Edit Account", edit_registration_path(current_user) %></li>
                  <div class="dropdown-divider"></div>
                  <li class="dropdown-item navdrop-link"><%= link_to "My Station", station_path(current_user) %></li>
                  <li class="dropdown-item navdrop-link"><%= link_to "My Downloads", purchases_path %></li>
                  <div class="dropdown-divider"></div>
                  <li class="dropdown-item navdrop-link"><%= link_to "Upload Track", new_track_path %></li>
                            <li class="dropdown-item navdrop-link"><%= link_to "Create Album", new_album_path %></li>
                  <li class="dropdown-item navdrop-link"><%= link_to "Create Blog Post", new_blog_path %></li>
                  <div class="dropdown-divider"></div>

                    <!--- Seller Stuff --->
                                <% if current_user.uid? %>
                                <li class="dropdown-item navdrop-link"><%= link_to "Sell Something", new_listing_path %></li>
                            <li class="dropdown-item navdrop-link"><%= link_to "Sales", sales_path %></li>
                  <li class="dropdown-item navdrop-link"><%= link_to "Payout", payout_method_path %></li>
                    <% else %>
                    <li class="dropdown-item navdrop-link"><%= link_to "Become a Seller", payout_method_path %></li>
                    <% end %>

                    <div class="dropdown-divider"></div>
                    <li class="dropdown-item navdrop-link current"><%= link_to destroy_user_session_path, method: :delete do %>
                            <i class="fas fa-sign-out-alt text-dark fa-lg"></i> Log Out
                      <% end %></li>
                          </ul>
                        </div>

            <li class="nav-item">
                <%= link_to notifications_path(current_user), :class => "nav-link text-light m-2" do %>
                            <i class="fas fa-comments text-light mr-1"></i>
                            <% if @notifications.count > 0 %>
                                <span class="site-blue"><%= @notifications.count %></span>
                            <% end %>
                        <% end %>
                    </li>

                    <div class="dropdown">
                      <button class="btn btn-default dropdown-toggle m-2" type="button" id="dropdownMenu1" data-toggle="dropdown" aria-haspopup="true" aria-expanded="true">
                        EXPLORE
                        <span class="caret"></span>
                      </button>
                      <ul class="dropdown-menu p-2" aria-labelledby="dropdownMenu1">
                        <li class="dropdown-item navdrop-link"><%= link_to "Albums", albums_path %></li>
                        <li class="dropdown-item navdrop-link"><%= link_to "Tracks", tracks_path %></li>
              <li class="dropdown-item navdrop-link"><%= link_to "Genres", genres_path %></li>
              <li class="dropdown-item navdrop-link"><%= link_to "Blog Posts", blogs_path %></li>
                      </ul>
                    </div>

            <li class="nav-item">
                <%= link_to listings_path, :class => "nav-link text-light m-2 menu-item" do %>
                          <i class="fas fa-shopping-cart text-light"></i> Marketplace
                        <% end %>
            </li>

            <%= link_to  destroy_user_session_path, method: :delete, :class => "nav-link text-light m-2 menu-item" do %>
                <i class="fas fa-sign-out-alt site-red fa-lg"></i>
          <% end %>

          <% end %>
      </ul>
    </div>
  </nav>
  <!-- end of navbar -->
</header>
<!-- end of header -->