Ruby : HOw to access client customer id without mentioning in configuration file

I need to access client customer id to set its value in yml file. Once the user is authorize, how to access its client customer id in order to set it run time in application instead of setting in configuration file -- -- =~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~ Also find us on our

Ruby : How to apply UserList to a perticular campaign

Hello, I am trying to add a user list, created with Mobile device ID's to campaign. How can I do this ? -- -- =~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~ Also find us on our blog and Google+: https://googleadsdeveloper.blogspot.com/ https://plus.google.com/+GoogleAdsDevelopers/posts