Convience method for short-hand access to class specific config. If a config specific to this class doesn‘t exist, it‘ll return the root config instance.

Example:

  # Given CONFIG_PATH/person.yml (with param sort_by_lastname: true)
  @person = Person.new
  @person.config => $config.person
  @person.config.sort_by_lastname => true

  # Given CONFIG_PATH/bank_account.yml  (with param mask_account_number: true)
  bank_acct = BankAccount.new
  bank_acct.config => $config.bank_account
  bank_acct.config.mask_account_number => true

  # Given no specific config
  @person = Person.new
  @person.config => $config
  @person.config.bank_account => $config.bank_account

NOTE: If there is a class-specific config file, and an object needs to

      access a different config, use the global instance ($config) or
      the class (RConfig).

[Source]

# File lib/rconfig/core_ext/object.rb, line 41
  def config
    this_config = $config.send(self.class.name.underscore.to_sym)    
    this_config.blank? ? $config : this_config
  end

 @person ? @person.name : nil
          - or -

@people[:email] if @people

          - vs -
 @person.try(:name)

[Source]

# File lib/rconfig/core_ext/object.rb, line 9
  def try(method, *args)
    result = send(method, *args) if respond_to?(method)
    result = send(:[], method) if result.nil? && respond_to?(:[])
    result
  end