build method

@override String? build()

Initialize a Notifier.

It is safe to use Ref.watch or Ref.listen inside this method.

If a dependency of this Notifier (when using Ref.watch) changes, then build will be re-executed. On the other hand, the Notifier will not be recreated. Its instance will be preserved between executions of build.

If this method throws, reading this provider will rethrow the error.

Implementation

@override
String? build() {
  _params = ref.watch(paramsProvider(id));

  _params.addListener(_update);
  ref.onDispose(() => _params.removeListener(_update));

  return _compute();
}