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useRelationshipsOrRelationshipsById

The useRelationshipsOrRelationshipsById primitive is used to get a reference to a Relationships object from within a Provider component context, or have it passed directly to this primitive.

useRelationshipsOrRelationshipsById(relationshipsOrRelationshipsId?: MaybeAccessor<undefined | RelationshipsOrRelationshipsId>): Accessor<Relationships | undefined>
TypeDescription
relationshipsOrRelationshipsId?MaybeAccessor<undefined | RelationshipsOrRelationshipsId>

Either an Id for accessing a Relationships object that was named with an Id in the Provider, or the Relationships object itself.

returnsAccessor<Relationships | undefined>

A reference to the Relationships object (or undefined if not within a Provider context, or if the requested Relationships object does not exist).

This is mostly of use when you are developing a component that needs a Relationships object and which might have been passed in explicitly to the component or is to be picked up from the context by Id (a common pattern for Relationships-based components).

This is unlikely to be used often. For most situations, you will want to use the useRelationships primitive.

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 {useRelationshipsOrRelationshipsById} 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');
  useRelationshipsOrRelationshipsById(relationships);
  dispose();
});

Since

v8.3.0