Rails - Can't convert fixnum to string during rake db:create

Hi fellas!

I'm using MySQL and tried to run rake db:create and this error was returned:

`connect': can't convert Fixnum into String (TypeError)

The problem is that YAML parser is trying to guess what data type value I have in my datase.yml.

My file was like this:

development:
adapter: mysql2
encoding: utf8
reconnect: false
database: walk_benchmark_development
pool: 5
username: root
password: 123
socket: /var/run/mysqld/mysqld.sock

So the parser probably considers my password as a integer and forcing it to interpret my password as a string works.

password: "123"