get the same model in two time from a relation

[bo...@nexinun.com]

Hello awsome,i want to know how to get the model in the same time from the same relation

i have user model

i also have recharge model that contains 2 différents user (user_id  and seller_id).
when i execute my program,all is god,but i don't know how recupère two différent user from the relation;the index file can only get one user in index.haml file

please ignore my poor english

take a look inside this image