Как да конфигурирам Postgresql с проект за релси?

Зададохте ли парола за вашия postgres потребител?

Във вашия config/database.yml трябва да настроите вашите бази данни правилно:

development:
  adapter: postgresql
  encoding: unicode
  database: your_app_development # name your development app something
  host: localhost
  pool: 5
  username: your_username
  password: your_password # or leave blank if you didn't set a password

test:
  adapter: postgresql
  encoding: unicode
  database: your_app_test
  host: localhost
  pool: 5
  username: your_username
  password: your_password