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Custom configuration

Create a YAML file in the config/ directory

Example

config/neo4j.yml

The content of neo4j.yml can be something like given below

default: &default
  host: localhost
  port: 7474
  username: neo4j
  password: root

development:
  <<: *default

test:
  <<: *default

production:
  <<: *default

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config/application.rb:

module MyApp
  class Application < Rails::Application
    config.neo4j = config_for(:neo4j)
  end
end

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Now, our custom config is accessible like given below:

Rails.configuration.neo4j['host']
 #=> localhost
Rails.configuration.neo4j['port']
 #=> 7474

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More info:

Rails official API document describes the config_for method as:

Convenience for loading config/foo.yml for the current Rails env.

If we do not want to use a yaml file

We can configure our own code through the Rails configuration object with custom configuration under the config.x property.

Example

config.x.payment_processing.schedule = :daily
config.x.payment_processing.retries  = 3
config.x.super_debugger = true

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These configuration points are then available through the configuration object:

Rails.configuration.x.payment_processing.schedule # => :daily
Rails.configuration.x.payment_processing.retries  # => 3
Rails.configuration.x.super_debugger              # => true
Rails.configuration.x.super_debugger.not_set      # => nil

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