HI played around with Yancy the cms for Perl Mojolicious web framework.
When I tried to configure the salt for the password I could pass static values:

    $self->yancy->plugin(
        'Auth::Password' => {
            allow_register => 1,
            register_fields => ['username', 'user_password'],
            schema          => 'User',
            username_field  => 'username',
            password_field  => 'user_password',
            password_digest => {
                type => 'Bcrypt',
                cost => 12,
                salt => '33cb8ead91234111',
            },
        }
    );

    

Is there any way in which I can make the code yancy auth plugin read the salt for each password form the a db before login?