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Do not expect database user with app name to exist
By default when creating a project with `--database=postgresql` the `config/database.yml` file that is generated has a user specified that is the same as the app name ``` development: adapter: postgresql encoding: unicode database: <%= app_name %>_development pool: 5 username: <%= app_name %> password: ``` This is counterintuitive and would rarely be valid. By default postgres creates a user with the current user name (http://www.postgresql.org/docs/9.3/static/database-roles.html) "it will have the same name as the operating system user that initialized the database cluster": ``` $ whoami schneems ``` If the `username` is left out postgresql will assume that you wish to log in as the default user ``` $ psql -c '\du' List of roles Role name | Attributes | Member of -----------+------------------------------------------------+----------- schneems | Superuser, Create role, Create DB, Replication | {} ``` A good sensible default then for auto generated `database.yml` files is to remove the `username`, and have postgres attempt to connect to the database as the currently logged in user. Instead of submitting with a blank password, don't submit a password.
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