Why use "username" as identity field and not the "id"?

[rafis]

Why you use "username" as identity field, while most auth engines I have encountered in PHP uses used_id as identity?

[kennethklee]

by default, this module uses id as the primary key. see https://github.com/madhurjain/passport-local-sequelize/blob/3871eaaf72df031db1f5c49633a2df25feae79d8/lib/passport-local-sequelize.js#L35-L39

username is just a normal field. if PHP uses id as a username, it's very very incorrect. i have enough trouble remembering my ICQ number.