upload_controller.rb

class UploadController < ApplicationController
  def admission
    @all=Upload.all
    params[:upload]['item'] += "_#{Time.now.to_i}" if params[:upload]['item'].present?
    #doing Time.now.to_i will give you better results for filenames then to_s
    @upload=Upload.new(params[:upload])
    #@upload.uploaded_at = Time.now #This should happen automagically though
    if @upload.save
      flash[:notice]="File uploaded successful,please wait for processing "
    else
      flash[:notice]="SOmething went wrong "
    end
  end
  def marks
  end
end