Question

我正在阅读基本的rails教程，当我尝试使用“rails s”运行我的服务器时我在localhost：3000浏览器中获得ActiveRecord :: ConnectionNotEstablished。

我在教程中告诉我确保我的database.yml具有正确的凭据但不是告诉如何做到这一点。我正在使用Postgresql。这就是我的databse.yml：

# SQLite version 3.x
#   gem install sqlite3
#
#   Ensure the SQLite 3 gem is defined in your Gemfile
#   gem 'sqlite3'
development:
  adapter: postgresql
  database: myrubyblog
  username:postgres
  password: theoffice
  pool: 5
  timeout: 5000
  host: localhost

# Warning: The database defined as "test" will be erased and
# re-generated from your development database when you run "rake".
# Do not set this db to the same as development or production.
test:
  adapter: postgresql
  database: myrubyblog
  username:postgres
  password: theoffice
  pool: 5
  timeout: 5000
  host: localhost

production:
  adapter: postgresql
  database: myrubyblog
  username:postgres
  password: theoffice
  pool: 5
  timeout: 5000
  host: localhost

谢谢！

Answer 1

尝试删除行：

pool: 5
timeout: 5000
host: localhost

再次尝试启动服务器
如果它仍然失败。确保你已正确安装psql

$ sudo -u postgres psql
> CREATE ROLE "Blou91" PASSWORD 'secret' SUPERUSER CREATEDB CREATEROLE INHERIT LOGIN;

如果你收到像'Sucsses'这样的消息。将database.yml更改为：

common: &common
  adapter: postgresql
  username: "Blou91"
  password: "secret"

development:
  <<: *common
  database: myrubyblog_development

test:
  <<: *common
  database: myrubyblog_test

production:
  <<: *common
  database: myrubyblog_production

然后在rails应用程序目录下运行

$ bundle exec rake db：create db：migrate

确保database.yml文件具有适当的凭据

1 个答案: