rails实现多文件的上传

实现把文件上传到服务器,文件名/文件大小/文件的描述 上传到数据库


Application.rb代码如下:

# Filters added to this controller apply to all controllers in the application.

# Likewise, all the methods added will be available for all controllers.



class ApplicationController < ActionController::Base

  # Pick a unique cookie name to distinguish our session data from others'

  session :session_key => '_uploadF_session_id'    



  def uploadFile(file)

     if !file.original_filename.empty?

      @filename=getFileName(file.original_filename)

      File.open("#{RAILS_ROOT}/public/files/#{@filename}", "wb") do |f|

      f.write(file.read)

      end

     return @filename 

    end

  end



  def getFileName(filename)  

     if !filename.nil?  

        return filename

     end     

  end



  def savefiles(file,description)

    @filename=getFileName(file.original_filename)

    @filesize=getFileName(file.length)

    @uploadfile = Uploadfile.new

    @uploadfile.filename=@filename

    @uploadfile.filesize=@filesize/1024

    @uploadfile.description=description

    @uploadfile.save

  end  

end

upload_controller.rb代码如下:

class UploadController < ApplicationController

 def upload

   @uploadfile = Uploadfile.new

   unless request.get?  

     i=params[:file].size

     for num in (0..i-1)

      if  filename=uploadFile(params[:file][num])

      savefiles(params[:file][num],params[:uploadfile][num])

      end

     end

   end

   end

end

upload.rhtml代码:

 

<%=start_form_tag ({:action=>"upload"},:multipart=>true )%>

  


    


    


  

  

  

<%=end_form_tag%>