How to create new postgres user for a new Rails project?

Question

I created a new rails project rails new devise_gem_app -d postgresql and changed config/database.yml to these:

default: &default
  adapter: postgresql
  encoding: unicode
  username: devise_gem_app
  password: devise_gem_app
  host: localhost

development:
  <<: *default
  database: devise_gem_app_development

test:
  <<: *default
  database: devise_gem_app_test

But I don't know how to connect the user to this batabase

I create a user like this: createuser devise_gem_app -W set it as a super user and I set password to: devise_gem_app.

But when I try rake db:migrate I get:

PG::ConnectionBad: FATAL:  password authentication failed for user "devise_gem_app"
FATAL:  password authentication failed for user "devise_gem_app"

I even chenged last line of pg_hbf.conf to:

#local   replication     postgres   trust

... and nothing ...

I know this should be easy but I just don't see what am I doing wrong.

Answer 1

我不确定createuser命令在做什么，但是您始终可以直接在postgres中为devise_gem_app用户设置密码。

ALTER user devise_gem_app WITH password 'devise_gem_app';

Answer 2

create user user_name with password 'password' createdb;

And in pg_hbf.conf file

#Database administrative login by Unix domain socket
local   all             postgres                                peer

Answer 3

In the end I ended following this tutorial: http://www.cyberciti.biz/faq/howto-add-postgresql-user-account/

But I am upset that it seems rails don`t support, creating new users for new projects db, which seems to be common practice.