rails技巧之把数据导入excel

首先下个插件，在你项目根目录
ruby script/plugin install http://svn.napcsweb.com/public/excel 此时就会唉vendor下多个文件夹，注意。里面有个excel.rb，这就是我们的核心方法
然后转到我们的控制器
#导出Excel开始
def export
@ala_users = User.find(:all)
@count = Record.count(:conditions => [' ala_organization_id = ? and ala_user_id = ? ',session[:organization_id],session[:user_id]])
@count_pass = Record.count(:conditions => [' ala_organization_id = ? and ala_user_id = ? and status = ? ',session[:organization_id],session[:user_id],'6'])
array = Array.new
for i in 0..@ala_users.length-1
item = OrderedHash.new
item["姓名"] = @ala_users[i].name
item["部门"] = @ala_users[i].ala_department.name if @ala_users[i].ala_department
item["职位"] = @ala_users[i].positions
item["学时"] = @ala_users[i].learning_times
item["学分"] = @ala_users[i].learning_credits
item["报名课程数"] = @count[i]
item["通过课程数"] = @count_pass[i]
array << item
end
e = Excel::Workbook.new
e.addWorksheetFromArrayOfHashes("Books info", array)
headers['Content-Type'] = "application/vnd.ms-excel"
render_text(e.build)
end
现在就ok了，但是注意OrderedHash这个hash，这个hash是有序的，爽吧！别慌，需要在控制器里面导入
require "active_support"
include ActiveSupport
OrderedHash才可已用