在AWS上与Postgresql的ActiveRecord :: Base。Establishment_connection

Question

When I got my database.yml configured like this:

default: &default
  adapter: postgresql
  encoding: utf8
  pool: 5
  timeout: 5000

production:
  <<: *default
  host: my_db_address
  port: 5432
  database: my_db_name
  username: my_db_user_name
  password: my_db_password

< test and development ommited >

When I establish connection like this:

ActiveRecord::Base.establish_connection

it says ActiveRecord::AdapterNotSpecified - 'production'

It works hovewer If I do it like this:

ActiveRecord::Base.establish_connection(
    {:adapter => 'postgresql',
     :database => 'my_db_name',
     :host => 'my_db_address',
     :port => '5432',
     :username => 'my_db_user_name',
     :password => 'my_db_password'}
)

I'd rather load the config from database.yml. How do I do this?

I'm on Rails 4.2.1 and Postgres 9.4

Answer 1

Here is the working code:

db_config = YAML.load_file('config/database.yml')
ActiveRecord::Base.establish_connection(db_config['production'])

Answer 2

只需通过您的生产环境作为选择：

ActiveRecord::Base.establish_connection(:production)