Method: GraphQL::Subscriptions#trigger

Defined in:
lib/graphql/subscriptions.rb

#trigger(event_name, args, object, scope: nil) ⇒ void

This method returns an undefined value.

Fetch subscriptions matching this field + arguments pair And pass them off to the queue.

Parameters:

  • event_name (String)
  • args (Hash<String, Symbol => Object]) —

    rgs [Hash Object]

  • object (Object)
  • scope (Symbol, String) (defaults to: nil) 


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# File 'lib/graphql/subscriptions.rb', line 41

def trigger(event_name, args, object, scope: nil)
  event_name = event_name.to_s

  # Try with the verbatim input first:
  field = @schema.get_field("Subscription", event_name)

  if field.nil?
    # And if it wasn't found, normalize it:
    normalized_event_name = normalize_name(event_name)
    field = @schema.get_field("Subscription", normalized_event_name)
    if field.nil?
      raise InvalidTriggerError, "No subscription matching trigger: #{event_name} (looked for #{@schema.subscription.graphql_name}.#{normalized_event_name})"
    end
  else
    # Since we found a field, the original input was already normalized
    normalized_event_name = event_name
  end

  # Normalize symbol-keyed args to strings, try camelizing them
  normalized_args = normalize_arguments(normalized_event_name, field, args)

  event = Subscriptions::Event.new(
    name: normalized_event_name,
    arguments: normalized_args,
    field: field,
    scope: scope,
  )
  execute_all(event, object)
end