Class: Connection

Inherits:
Object
  • Object
show all
Defined in:
lib/unit4/checkout/connection.rb

Overview

creates the connection for both Rails and non-Rails applications

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Connection

Returns a new instance of Connection.



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# File 'lib/unit4/checkout/connection.rb', line 8

def initialize
  db_config = setup_db_config
  ActiveRecord::Base.establish_connection(adapter: db_config["adapter"], database: db_config["database"])
end

Instance Method Details

#non_rails_db_config ⇒ Object 



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# File 'lib/unit4/checkout/connection.rb', line 22

def non_rails_db_config
  # plain Ruby doesn't really have a sense of environments (unless a custom one has been set up)
  # the development key will most likely be changed when the gem is used by a plain Ruby application
  # the database db and config used here are samples from a Rails application, but this works with plain Ruby too
  # Future work: test thoroughly on plain Ruby applications
  YAML.safe_load(ERB.new(File.read("./config/database.yml")).result, aliases: true)["development"]
end

#rails_db_config ⇒ Object 



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# File 'lib/unit4/checkout/connection.rb', line 18

def rails_db_config
  Rails.application.config.database_configuration[Rails.env]
end

#setup_db_config ⇒ Object 



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# File 'lib/unit4/checkout/connection.rb', line 13

def setup_db_config
  # decide whether the application that uses the gem is a Rails one or a plain Ruby
  defined?(Rails) && defined?(Rails.env) ? rails_db_config : non_rails_db_config
end