`useStartTransactionListener`

The useStartTransactionListener primitive registers a listener function with the Store that will be called at the start of a transaction.

useStartTransactionListener(
  listener: TransactionListener,
  storeOrStoreId?: MaybeAccessor<undefined | StoreOrStoreId>,
): void

	Type	Description
`listener`	`TransactionListener`	The function that will be called at the start of a transaction.
`storeOrStoreId?`	`MaybeAccessor<undefined \| StoreOrStoreId>`	The `Store` to register the listener with: omit for the default context `Store`, provide an `Id` for a named context `Store`, or provide an explicit reference.
returns	`void`	This has no return value.

Unlike the addStartTransactionListener method, which returns a listener Id and requires you to remove it manually, the useStartTransactionListener primitive manages this lifecycle for you: when the listener changes (per its you to remove it manually, the useValueListener primitive manages this lifecycle for you: when the component unmounts, the listener on the underlying Store will be deleted.

Example

This example creates the TinyBase objects needed by the Solid primitive or component and calls it from within a reactive root.

import {createRoot} from 'solid-js';
import {
  createCheckpoints,
  createIndexes,
  createMetrics,
  createQueries,
  createRelationships,
  createStore,
} from 'tinybase';
import {useStartTransactionListener} from 'tinybase/ui-solid';

createRoot((dispose) => {
  const store = createStore()
    .setTables({
      pets: {
        fido: {species: 'dog', color: 'brown', next: 'felix'},
        felix: {species: 'cat', color: 'black'},
      },
      species: {dog: {price: 5}, cat: {price: 4}},
    })
    .setValues({open: true});
  const metrics = createMetrics(store).setMetricDefinition(
    'highestPrice',
    'species',
    'max',
    'price',
  );
  const indexes = createIndexes(store).setIndexDefinition(
    'bySpecies',
    'pets',
    'species',
  );
  const relationships = createRelationships(store)
    .setRelationshipDefinition('petSpecies', 'pets', 'species', 'species')
    .setRelationshipDefinition('nextPet', 'pets', 'pets', 'next');
  const queries = createQueries(store).setQueryDefinition(
    'petColors',
    'pets',
    ({select, where, param}) => {
      select('color');
      where((getCell) => getCell('species') == param('species'));
    },
    {species: 'dog'},
  );
  const checkpoints = createCheckpoints(store);
  store.setCell('pets', 'fido', 'color', 'walnut');
  checkpoints.setCheckpoint('updated color');
  metrics.getMetric('highestPrice');
  indexes.getSliceIds('bySpecies');
  relationships.getRemoteRowId('petSpecies', 'fido');
  queries.getResultRowIds('petColors');
  useStartTransactionListener(() => undefined, store);
  dispose();
});

Since

v8.3.0