How to do username case insensitive in login form?

问题

I'm using the login form from Symfony, but I can't login, if the entered username is 'FOO' and in the DB is stored 'foo'. I'm using Postgres. It means the username-field is case sensitive. What can I do?

回答1:

This depends mainly on your Database-Server. MySQL is case insensitive, PostgreSQL is case sensitive.

But you can write query Like this

$this->createQueryBuilder('user')
            ->where('LOWER(user.username) = :username')
            ->setParameter('username', strtolower($username))
            ->getQuery()
            ->getResult()
            ;

来源：https://stackoverflow.com/questions/56183229/how-to-do-username-case-insensitive-in-login-form