rails3 bigint primary key

Question

I would like to create a bigint (or string or whatever that is not int) typed primary key field under Rails 3.

I have a given

Answer 1

Had that myself not long ago and found the answer here: Using Rails, how can I set my primary key to not be an integer-typed column?

You need to set primary_key: false and then use a custom statement before you execute the migration.

EDIT 1: You need to check your database docs for the exact query to perform. It is executed as a regular SQL statement and needs to be database specific. The example in the question I referred to is for Postgre SQL. If you are on MySQL you might have to change that.