LiveQueryCollectionConfig | TanStack DB Tiếng Việt

Defined in: packages/db/src/query/live/types.ts:65

Configuration interface for live query collection options

Example

const config: LiveQueryCollectionConfig<any, any> = {
  // id is optional - will auto-generate "live-query-1", "live-query-2", etc.
  query: (q) => q
    .from({ comment: commentsCollection })
    .join(
      { user: usersCollection },
      ({ comment, user }) => eq(comment.user_id, user.id)
    )
    .where(({ comment }) => eq(comment.active, true))
    .select(({ comment, user }) => ({
      id: comment.id,
      content: comment.content,
      authorName: user.name,
    })),
  // getKey is optional - defaults to using stream key
  getKey: (item) => item.id,
}

Type Parameters

TContext

TContext extends Context

TResult

TResult extends object = RootQueryResult<TContext>

Properties

defaultStringCollation?

optional defaultStringCollation: StringCollationConfig;

Defined in: packages/db/src/query/live/types.ts:121

Optional compare options for string sorting. If provided, these will be used instead of inheriting from the FROM collection.

gcTime?

optional gcTime: number;

Defined in: packages/db/src/query/live/types.ts:110

GC time for the collection

getKey()?

optional getKey: (item) => string | number;

Defined in: packages/db/src/query/live/types.ts:88

Function to extract the key from result items If not provided, defaults to using the key from the D2 stream

Parameters

item

TResult

Returns

string | number

id?

optional id: string;

Defined in: packages/db/src/query/live/types.ts:73

Unique identifier for the collection If not provided, defaults to live-query-${number} with auto-incrementing number

onDelete?

optional onDelete: 
  | DeleteMutationFn<TResult, string | number, UtilsRecord, void>
| DeleteMutationFn<TResult, string | number, UtilsRecord, any>;

Defined in: packages/db/src/query/live/types.ts:100

onInsert?

optional onInsert: 
  | InsertMutationFn<TResult, string | number, UtilsRecord, void>
| InsertMutationFn<TResult, string | number, UtilsRecord, any>;

Defined in: packages/db/src/query/live/types.ts:98

Optional mutation handlers

onUpdate?

optional onUpdate: 
  | UpdateMutationFn<TResult, string | number, UtilsRecord, void>
| UpdateMutationFn<TResult, string | number, UtilsRecord, any>;

Defined in: packages/db/src/query/live/types.ts:99

query

query: 
  | (q) => QueryBuilder<TContext> & RootObjectResultConstraint<TContext>
| QueryBuilder<TContext> & RootObjectResultConstraint<TContext>;

Defined in: packages/db/src/query/live/types.ts:78

Query builder function that defines the live query

schema?

optional schema: undefined;

Defined in: packages/db/src/query/live/types.ts:93

Optional schema for validation

singleResult?

optional singleResult: true;

Defined in: packages/db/src/query/live/types.ts:115

If enabled the collection will return a single object instead of an array

startSync?

optional startSync: boolean;

Defined in: packages/db/src/query/live/types.ts:105

Start sync / the query immediately