如何自定义rails上传表单并仍然显示已上传的文件

# config/routes.rb
post 'upload', to: 'uploads#upload'

$ rails generate controller uploads

# app/controllers/uploads_controller.rb
class UploadsController < ApplicationController
  def upload
    uploaded_file = params[:file]
    # 在这里处理上传的文件，例如保存到服务器或存储到云存储服务

    redirect_to uploads_path
  end

  def index
    @uploaded_files = # 获取已上传的文件列表，可以从数据库或文件系统中获取

    # 渲染视图显示已上传的文件
  end
end

<!-- app/views/uploads/upload.html.erb -->
<%= form_tag(upload_path, method: :post, multipart: true) do %>
  <%= file_field_tag :file %>
  <%= submit_tag 'Upload' %>
<% end %>

<!-- app/views/uploads/index.html.erb -->
<% @uploaded_files.each do |file| %>
  <p><%= file %></p>
<% end %>

# config/environments/development.rb
Rails.application.configure do
  # 其他配置...

  config.active_storage.service = :local
  config.active_storage.service_urls_expire_in = 1.minute
  config.active_storage.service_configurations = {
    local: {
      service: "Disk",
      root: "#{Rails.root}/uploads"
    }
  }
end