wrong number of arguments (2 for 0) 错误

今天在想着怎么样来批量修改

params = [{"id=>"1" ,"name="jj"},{"id=>"2" ,"name="jssj"},{"id=>"4" ,"name="lou"}]     

我想把他转换成根据id批量更新的方法然后我去查看base.rb的源码，发现下面这种代码

# Example of updating one record:
      #   Person.update(15, {:user_name => 'Samuel', :group => 'expert'})
      #
      # Example of updating multiple records:
      #   people = { 1 => { "first_name" => "David" }, 2 => { "first_name" => "Jeremy"} }  
      #   Person.update(people.keys, people.values)

感觉可以拿来试试，唯一需要的就是把数组转换成一个hash，

但我按照这种格式后进行update时产生wrong number of arguments (2 for 0)  错误

就算people = { 1 => { "first_name" => "David" }, 2 => { "first_name" => "Jeremy"} }  写死还是报同样的错误