Method: GraphQL::Schema::Directive#initialize

Defined in:
lib/graphql/schema/directive.rb

#initialize(owner, **arguments) ⇒ Directive

Returns a new instance of Directive.



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# File 'lib/graphql/schema/directive.rb', line 122

def initialize(owner, **arguments)
  @owner = owner
  assert_valid_owner
  # It's be nice if we had the real context here, but we don't. What we _would_ get is:
  # - error handling
  # - lazy resolution
  # Probably, those won't be needed here, since these are configuration arguments,
  # not runtime arguments.
  context = Query::NullContext.instance
  self.class.all_argument_definitions.each do |arg_defn|
    keyword = arg_defn.keyword
    arg_type = arg_defn.type
    if arguments.key?(keyword)
      value = arguments[keyword]
      # This is a Ruby-land value; convert it to graphql for validation
      graphql_value = begin
        coerce_value = value
        if arg_type.list? && (!coerce_value.nil?) && (!coerce_value.is_a?(Array))
          # When validating inputs, GraphQL accepts a single item
          # and implicitly converts it to a one-item list.
          # However, we're using result coercion here to go from Ruby value
          # to GraphQL value, so it doesn't have that feature.
          # Keep the GraphQL-type behavior but implement it manually:
          wrap_type = arg_type
          while wrap_type.list?
            if wrap_type.non_null?
              wrap_type = wrap_type.of_type
            end
            wrap_type = wrap_type.of_type
            coerce_value = [coerce_value]
          end
        end
        arg_type.coerce_isolated_result(coerce_value)
      rescue GraphQL::Schema::Enum::UnresolvedValueError
        # Let validation handle this
        value
      end
    else
      value = graphql_value = nil
    end

    result = arg_type.validate_input(graphql_value, context)
    if !result.valid?
      raise InvalidArgumentError, "@#{graphql_name}.#{arg_defn.graphql_name} on #{owner.path} is invalid (#{value.inspect}): #{result.problems.first["explanation"]}"
    end
  end
  self.class.validate!(arguments, context)
  @arguments = self.class.coerce_arguments(nil, arguments, context)
  if @arguments.is_a?(GraphQL::ExecutionError)
    raise @arguments
  end
end