no _dump_data is defined for class Mysql2::Result

Hi ,

I was migrating my existing application from 'rails', '3.2.13' to 'rails', '4.1.0.beta1' and also with rvm => ruby '1.9.3' to ruby '2.1.0'

While i was migrating i face many issue and solved it.. But at this part i could able to get it fixed.. 

So if any one have idea about it , share it :) So that it be helpful..
