Module: Rails::GraphQL::Helpers::WithArguments

Included in:
Directive, Field::OutputField
Defined in:
lib/rails/graphql/helpers/with_arguments.rb

Overview

Helper module that allows other objects to hold arguments

Defined Under Namespace

Modules: ClassMethods

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.extended(other) ⇒ Object 



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# File 'lib/rails/graphql/helpers/with_arguments.rb', line 8

def self.extended(other)
  other.extend(Helpers::InheritedCollection)
  other.extend(WithArguments::ClassMethods)
  other.inherited_collection(:arguments, type: :hash)
end

.included(other) ⇒ Object 



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# File 'lib/rails/graphql/helpers/with_arguments.rb', line 14

def self.included(other)
  other.define_method(:arguments) do
    @arguments ||= {}
  end

  other.define_method(:all_arguments) do
    @arguments if defined?(@arguments)
  end

  other.define_method(:arguments?) do
    defined?(@arguments) && @arguments.present?
  end
end

Instance Method Details

#=~(other) ⇒ Object

Check if all the arguments are compatible



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# File 'lib/rails/graphql/helpers/with_arguments.rb', line 57

def =~(other)
  super && other.respond_to?(:all_arguments) && match_arguments?(other)
end

#argument(name, type = nil, **xargs) ⇒ Object

See Argument class.



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# File 'lib/rails/graphql/helpers/with_arguments.rb', line 62

def argument(name, type = nil, **xargs)
  object = GraphQL::Argument.new(name, type, **xargs, owner: self)

  raise DuplicatedError, (+<<~MSG).squish if has_argument?(object.name)
    The #{name.inspect} argument is already defined and can't be redefined.
  MSG

  arguments[object.name] = object
  self
rescue DefinitionError => e
  raise e.class, +"#{e.message}\n  Defined at: #{caller(2)[0]}"
end

#has_argument?(name) ⇒ Boolean

Check if a given name is already defined on the list of arguments

Returns:

  • (Boolean) 


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# File 'lib/rails/graphql/helpers/with_arguments.rb', line 99

def has_argument?(name)
  defined?(@arguments) && @arguments.key?(name)
end

#id_argument(*args, **xargs, &block) ⇒ Object

A short cute for arguments named and typed as id



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# File 'lib/rails/graphql/helpers/with_arguments.rb', line 92

def id_argument(*args, **xargs, &block)
  name = args.size >= 1 ? args.shift : :id
  xargs[:null] = false unless xargs.key?(:null)
  argument(name, :id, *args, **xargs, &block)
end

#initialize(*args, arguments: nil, **xargs, &block) ⇒ Object 



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# File 'lib/rails/graphql/helpers/with_arguments.rb', line 38

def initialize(*args, arguments: nil, **xargs, &block)
  @arguments = GraphQL.enumerate(arguments).each_with_object({}) do |item, hash|
    raise ArgumentError, (+<<~MSG).squish unless item.is_a?(Argument)
      The given "#{item.inspect}" is not a valid Argument object.
    MSG

    hash[item.name] = Helpers.dup_with_owner(item, self)
  end unless arguments.nil?

  super(*args, **xargs, &block)
end

#initialize_copy(orig) ⇒ Object 



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# File 'lib/rails/graphql/helpers/with_arguments.rb', line 50

def initialize_copy(orig)
  super

  @arguments = Helpers.dup_all_with_owner(orig.arguments.transform_values, self)
end

#ref_argument(object) ⇒ Object

Since arguments’ owner are more flexible, their instances can be directly associated to objects that have argument



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# File 'lib/rails/graphql/helpers/with_arguments.rb', line 77

def ref_argument(object)
  raise ArgumentError, (+<<~MSG).squish unless object.is_a?(GraphQL::Argument)
    The given object #{object.inspect} is not a valid argument.
  MSG

  raise DuplicatedError, (+<<~MSG).squish if has_argument?(object.name)
    The #{object.name.inspect} argument is already defined and can't be redefined.
  MSG

  (@arguments ||= {})[object.name] = object
rescue DefinitionError => e
  raise e.class, +"#{e.message}\n  Defined at: #{caller(2)[0]}"
end

#validate! ⇒ Object

Validate all the arguments to make sure the definition is valid



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# File 'lib/rails/graphql/helpers/with_arguments.rb', line 104

def validate!(*)
  super if defined? super

  return unless defined? @arguments
  @arguments.each_value(&:validate!)
  @arguments.freeze
end