Class: GraphQL::Subscriptions::SubscriptionRoot::Extension Private

Inherits:
GraphQL::Schema::FieldExtension show all
Defined in:
lib/graphql/subscriptions/subscription_root.rb

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

Direct Known Subclasses

DefaultSubscriptionResolveExtension

Instance Attribute Summary

Attributes inherited from GraphQL::Schema::FieldExtension

#field, #options

Instance Method Summary collapse

Methods inherited from GraphQL::Schema::FieldExtension

#apply, #initialize, #resolve

Constructor Details

This class inherits a constructor from GraphQL::Schema::FieldExtension

Instance Method Details

#after_resolve(value:, context:, object:, arguments:, **rest) ⇒ 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/subscriptions/subscription_root.rb', line 37

def after_resolve(value:, context:, object:, arguments:, **rest)
  if value.is_a?(GraphQL::ExecutionError)
    value
  elsif (events = context.namespace(:subscriptions)[:events])
    # This is the first execution, so gather an Event
    # for the backend to register:
    event = Subscriptions::Event.new(
      name: field.name,
      arguments: arguments_without_field_extras(arguments: arguments),
      context: context,
      field: field,
    )
    events << event
    value
  elsif context.query.subscription_topic == Subscriptions::Event.serialize(
      field.name,
      arguments_without_field_extras(arguments: arguments),
      field,
      scope: (field.subscription_scope ? context[field.subscription_scope] : nil),
    )
    # This is a subscription update. The resolver returned `skip` if it should be skipped,
    # or else it returned an object to resolve the update.
    value
  else
    # This is a subscription update, but this event wasn't triggered.
    context.skip
  end
end