build_db_config_from_raw_config

# File activerecord/lib/active_record/database_configurations.rb, line 145
      def build_db_config_from_raw_config(env_name, spec_name, config)
        case config
        when String
          build_db_config_from_string(env_name, spec_name, config)
        when Hash
          build_db_config_from_hash(env_name, spec_name, config.stringify_keys)
        else
          raise InvalidConfigurationError, "'{ #{env_name} => #{config} }' is not a valid configuration. Expected '#{config}' to be a URL string or a Hash."
        end
      end