`addQueryIdsListener`

The addQueryIdsListener method registers a listener function with the Queries object that will be called whenever an Query definition is added or removed.

addQueryIdsListener(listener: QueryIdsListener): string

	Type	Description
`listener`	`QueryIdsListener`	The function that will be called whenever a Query definition is added or removed.
returns	`string`

The provided listener is a QueryIdsListener function, and will be called with a reference to the Queries object.

Example

This example creates a Store, a Queries object, and then registers a listener that responds to the addition and the removal of a Query definition.

const store = createStore().setTable('pets', {
  fido: {species: 'dog', color: 'brown'},
  felix: {species: 'cat', color: 'black'},
  cujo: {species: 'dog', color: 'black'},
});

const queries = createQueries(store);
const listenerId = queries.addQueryIdsListener((queries) => {
  console.log(queries.getQueryIds());
});

queries.setQueryDefinition('dogColors', 'pets', ({select, where}) => {
  select('color');
  where('species', 'dog');
});
// -> ['dogColors']
queries.delQueryDefinition('dogColors');
// -> []

queries.delListener(listenerId);

Since

v4.1.0