ruby-on-rails - 如何在Ruby on Rails中使用相同的.js更新重新创建远程链接？

Question

基本上，我希望使链接能够从“收藏夹”动态刷新为“已删除”，同时让用户可以选择重新单击新按钮以返回上一步。但是确实会发生该操作，因为刷新页面时会显示更新的按钮。为什么单击“收藏此教室”链接无效？ “删除此教室”链接似乎有效。谢谢你的帮助

favorite_controller.rb：

  def create
    current_classroom.add_to_favorites(@classroom)
    current_classroom.save
    respond_to do |format|
      format.js {  }
      format.html {redirect_to @classroom}
    end
  end

  def destroy
    current_classroom.remove_from_favorites(@classroom)
    current_classroom.save
    respond_to do |format|
      format.js {  }
      format.html {redirect_to @classroom}
    end
  end

收藏夹/create.js.erb

$("#favorite_classroom").html("<%= escape_javascript(link_to 'Remove the Classroom', classroom_favorite_path(@classroom), :remote => true, :method => :delete) %>");

教室/_classroom_details.html.erb

<div id="favorite_classroom">
<% if loggedin_user.favorite_classroom?(@classroom) %>
    <%= link_to 'Remove this Classroom', classroom_favorite_path(@classroom), :remote => true, :method => :delete %>
<% else %>
    <%= link_to 'Favorite this Classroom', classroom_favorites_path(@classroom), :remote => true, :method => :post %>
<% end %>

路线：

classroom_favorites POST   /classrooms/:classroom_id/favorites(.:format)  {:action=>"create", :controller=>"favorites"}
classroom_favorite DELETE /classrooms/:classroom_id/favorites/:id(.:format) {:action=>"destroy", :controller=>"favorites"}

当我点击“收藏此教室”链接时出现错误：
ActionView::Template::Error (No route matches {:action=>"destroy", :controller=>"favorites"

谢谢！

Answer 1

您在js文件中两次使用了双引号。你不能那样做。您需要这样重写它-

$("#favorite_classroom").html("<%= escape_javascript(link_to 'Remove the Classroom', classroom_favorite_path(@classroom), :remote => true, :method => :delete) %>");

现在注意，“删除教室”用单引号引起来，而不是双引号引起来。

此外，您的路线不正确，因为您在教室中嵌套了收藏夹。编写链接时，需要添加要删除的@favorite对象：

= link_to 'Remove Favorite', classroom_favorite_path([@classroom, @favorite]), :remote => true, :method => :delete

现在，您尝试访问的路由有效。那应该摆脱错误。