Foreign key

HI all,

In my application i have 2 tables, 1.logins and 2. credits.

logins contains customer details and credits has credit detils of customers.

i have given custom foreign key while migrating database for credits table instead of logins_id i have given as log_id.

how to mention this in model associtations

You'll find lots of "getting started" guides online - no sense rewriting them here:

Particularly the guides at Ruby on Rails Guides. There is one on ActiveRecord Associations which should contain what you want to know (assuming you have worked through the Getting Started one first).