Method: GraphQL::Schema::Member::HasInterfaces#implements

Defined in:
lib/graphql/schema/member/has_interfaces.rb

#implements(*new_interfaces, **options) ⇒ 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_interfaces.rb', line 7

def implements(*new_interfaces, **options)
  new_memberships = []
  new_interfaces.each do |int|
    if int.is_a?(Module)
      unless int.include?(GraphQL::Schema::Interface) && !int.is_a?(Class)
        raise "#{int.respond_to?(:graphql_name) ? "#{int.graphql_name} (#{int})" : int.inspect} cannot be implemented since it's not a GraphQL Interface. Use `include` for plain Ruby modules."
      end

      new_memberships << int.type_membership_class.new(int, self, **options)

      # Include the methods here,
      # `.fields` will use the inheritance chain
      # to find inherited fields
      include(int)

      # If this interface has interfaces of its own, add those, too
      int.interfaces.each do |next_interface|
        implements(next_interface)
      end
    elsif int.is_a?(String) || int.is_a?(GraphQL::Schema::LateBoundType)
      if !options.empty?
        raise ArgumentError, "`implements(...)` doesn't support options with late-loaded types yet. Remove #{options} and open an issue to request this feature."
      end
      new_memberships << int
    else
      raise ArgumentError, "Unexpected interface definition (expected module): #{int} (#{int.class})"
    end
  end

  # Remove any String or late-bound interfaces which are being replaced
  own_interface_type_memberships.reject! { |old_i_m|
    if !(old_i_m.respond_to?(:abstract_type) && old_i_m.abstract_type.is_a?(Module))
      old_int_type = old_i_m.respond_to?(:abstract_type) ? old_i_m.abstract_type : old_i_m
      old_name = Schema::Member::BuildType.to_type_name(old_int_type)

      new_memberships.any? { |new_i_m|
        new_int_type = new_i_m.respond_to?(:abstract_type) ? new_i_m.abstract_type : new_i_m
        new_name = Schema::Member::BuildType.to_type_name(new_int_type)

        new_name == old_name
      }
    end
  }
  own_interface_type_memberships.concat(new_memberships)
end