调节器

class SpreadsheetServiceController < ApplicationController
 
  def new
  end
 
  def create    
    parser = SpreadsheetTagService.new(params[:spreadsheet][:file])
 
    respond_to do |format|
      format.all {render :json => 'Done'}
    end
  end
end

SpreadsheetTagService

class SpreadsheetTagService 
  include Roo
 
  def initialize(uploaded_file)
    @tmp_destination = "#{Rails.root}/tmp/tag-import.xls"
    @file_path = save_file_to_tmp(uploaded_file)
    @file = File.new(@file_path)
    read_file(@file)
  end 
 
  private 
    def save_file_to_tmp(uploaded_file)
      FileUtils.mv(uploaded_file.tempfile.path,@tmp_destination )
      @tmp_destination
    end
 
    def read_file(file)
      @spreadsheet = open_spreadsheet(file)
      @spreadsheet.each_with_pagename do |name,sheet|    
        Rails.logger.debug( sheet )
      end    
    end
 
    def open_spreadsheet(file)
      case File.extname(file.path)
        when ".csv" then Csv.new(file.path,nil,:ignore)
        when ".xls" then Excel.new(file.path,:ignore)
        when ".xlsx" then Excelx.new(file.path,:ignore)
        else raise "Unknown file type: #{file.original_filename}"
      end
    end
 
end

视图

<%= form_tag spreadsheetupload_url,multipart: true do %>
  <%= file_field_tag :file %>
  <%= submit_tag "Import" %>
<% end %>