Module: GraphQL::Schema::Member::HasArguments Private

Included in:
Directive, Field, InputObject, Resolver
Defined in:
lib/graphql/schema/member/has_arguments.rb

This module is part of a private API. You should avoid using this module if possible, as it may be removed or be changed in the future.

Defined Under Namespace

Modules: ArgumentClassAccessor, ArgumentObjectLoader

Instance Method Summary collapse

Instance Method Details

#add_argument(arg_defn) ⇒ GraphQL::Schema::Argument

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Register this argument with the class.

Parameters:

Returns:



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# File 'lib/graphql/schema/member/has_arguments.rb', line 45

def add_argument(arg_defn)
  own_arguments[arg_defn.name] = arg_defn
  arg_defn
end

#argument(*args, **kwargs, &block) ⇒ GraphQL::Schema::Argument

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Returns An instance of arguments_class, created from *args.

Returns:

See Also:

  • for parameters


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# File 'lib/graphql/schema/member/has_arguments.rb', line 18

def argument(*args, **kwargs, &block)
  kwargs[:owner] = self
  loads = kwargs[:loads]
  if loads
    name = args[0]
    name_as_string = name.to_s

    inferred_arg_name = case name_as_string
    when /_id$/
      name_as_string.sub(/_id$/, "").to_sym
    when /_ids$/
      name_as_string.sub(/_ids$/, "")
        .sub(/([^s])$/, "\\1s")
        .to_sym
    else
      name
    end

    kwargs[:as] ||= inferred_arg_name
  end
  arg_defn = self.argument_class.new(*args, **kwargs, &block)
  add_argument(arg_defn)
end

#argument_class(new_arg_class = nil) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Parameters:

  • new_arg_class (Class) (defaults to: nil) —

    A class to use for building argument definitions



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# File 'lib/graphql/schema/member/has_arguments.rb', line 62

def argument_class(new_arg_class = nil)
  self.class.argument_class(new_arg_class)
end

#arguments ⇒ Hash<String => GraphQL::Schema::Argument] Arguments defined on this thing, keyed by name. Includes inherited definitions

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Returns Hash<String => GraphQL::Schema::Argument] Arguments defined on this thing, keyed by name. Includes inherited definitions.

Returns:

  • (Hash<String => GraphQL::Schema::Argument] Arguments defined on this thing, keyed by name. Includes inherited definitions) —

    Hash<String => GraphQL::Schema::Argument] Arguments defined on this thing, keyed by name. Includes inherited definitions



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# File 'lib/graphql/schema/member/has_arguments.rb', line 51

def arguments
  inherited_arguments = ((self.is_a?(Class) && superclass.respond_to?(:arguments)) ? superclass.arguments : nil)
  # Local definitions override inherited ones
  if inherited_arguments
    inherited_arguments.merge(own_arguments)
  else
    own_arguments
  end
end

#coerce_arguments(parent_object, values, context) ⇒ Hash<Symbol, Object>, Execution::Lazy<Hash>

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Parameters:

Returns:



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# File 'lib/graphql/schema/member/has_arguments.rb', line 70

def coerce_arguments(parent_object, values, context)
  argument_values = {}
  kwarg_arguments = {}
  # Cache this hash to avoid re-merging it
  arg_defns = self.arguments

  maybe_lazies = []
  arg_lazies = arg_defns.map do |arg_name, arg_defn|
    arg_key = arg_defn.keyword
    has_value = false
    default_used = false
    if values.key?(arg_name)
      has_value = true
      value = values[arg_name]
    elsif values.key?(arg_key)
      has_value = true
      value = values[arg_key]
    elsif arg_defn.default_value?
      has_value = true
      value = arg_defn.default_value
      default_used = true
    end

    if has_value
      loads = arg_defn.loads
      loaded_value = nil
      if loads && !arg_defn.from_resolver?
        loaded_value = if arg_defn.type.list?
          loaded_values = value.map { |val| load_application_object(arg_defn, loads, val, context) }
          context.schema.after_any_lazies(loaded_values) { |result| result }
        else
          load_application_object(arg_defn, loads, value, context)
        end
      end

      coerced_value = if loaded_value
        loaded_value
      else
        context.schema.error_handler.with_error_handling(context) do
          arg_defn.type.coerce_input(value, context)
        end
      end

      context.schema.after_lazy(coerced_value) do |coerced_value|
        prepared_value = context.schema.error_handler.with_error_handling(context) do
          arg_defn.prepare_value(parent_object, coerced_value, context: context)
        end

        kwarg_arguments[arg_key] = prepared_value
        # TODO code smell to access such a deeply-nested constant in a distant module
        argument_values[arg_key] = GraphQL::Execution::Interpreter::ArgumentValue.new(
          value: prepared_value,
          definition: arg_defn,
          default_used: default_used,
        )
      end
    end
  end

  maybe_lazies.concat(arg_lazies)
  context.schema.after_any_lazies(maybe_lazies) do
    GraphQL::Execution::Interpreter::Arguments.new(
      keyword_arguments: kwarg_arguments,
      argument_values: argument_values,
    )
  end
end

#own_arguments ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



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# File 'lib/graphql/schema/member/has_arguments.rb', line 210

def own_arguments
  @own_arguments ||= {}
end