音頻標籤在Active admin中不起作用，Ruby on Rails

我有一個名爲Point的模型，它具有：與carrierwave相關的音頻字段，用於上傳音頻文件。我正在使用ActiveAdmin來創建一個新點。我試圖在活動管理中顯示點對象，除音頻領域外，一切正常。當我沒有audio_tag的時候，Activeadmin顯示上傳的音頻文件的名字，但是音頻標籤沒有顯示。這是代碼。提前致謝！音頻標籤在Active admin中不起作用，Ruby on Rails

class Point < ActiveRecord::Base 

mount_uploader :audio, FileUploader 
end 

class FileUploader < CarrierWave::Uploader::Base 

    storage :file 

    def extension_white_list 
    %w(wma wav ogg oga mp3 3gp) 
    end 

    def store_dir 
    "uploads/#{model.class.to_s.underscore}/#{mounted_as}/#{model.id}" 
    end 
    end 

ActiveAdmin.register Point do 

    menu label: 'points' 

    permit_params :title, :description, :audio, :altitude, :latitude, :longitude, :distance_visible, :coordinates 


    form do |f| 
    f.semantic_errors *f.object.errors.keys 
    f.inputs "Location" do 
     f.input :title, label: "Title" 
     f.input :description, :as => :text, label: "Description" 

     f.input :altitude, label: "Altidue" 
     f.input :latitude, label: "Latitude" 
     f.input :longitude, label: "Longitude" 
     f.input :distance_visible, label: "Distance" 

     f.input :audio, label: "Audio file" 
     end 
    f.actions 
    end 

    show do 
    attributes_table do 
     row :title 
     row :description 
     row :audio do |item| 
     audio_tag item.audio 
     end 
    end 
end

來源

2016-07-26 Azat Tezekbaev