| --- |
| id: parallel-queries |
| title: Parallel Queries |
| ref: docs/framework/react/guides/parallel-queries.md |
| replace: |
| { |
| 'If the number of queries you need to execute is changing from render to render, you cannot use manual querying since that would violate the rules of hooks. Instead, ': '', |
| 'hook': 'function', |
| 'React': 'Angular', |
| 'hooks': 'functions', |
| 'useQuery': 'injectQuery', |
| 'useInfiniteQuery': 'injectInfiniteQuery', |
| 'useQueries': 'injectQueries', |
| } |
| --- |
| |
| [//]: # 'Example' |
|
|
| ```ts |
| export class AppComponent { |
| // The following queries will execute in parallel |
| usersQuery = injectQuery(() => ({ queryKey: ['users'], queryFn: fetchUsers })) |
| teamsQuery = injectQuery(() => ({ queryKey: ['teams'], queryFn: fetchTeams })) |
| projectsQuery = injectQuery(() => ({ |
| queryKey: ['projects'], |
| queryFn: fetchProjects, |
| })) |
| } |
| ``` |
|
|
| [//]: # 'Example' |
| [//]: # 'Info' |
| [//]: # 'Info' |
| [//]: # 'DynamicParallelIntro' |
|
|
| TanStack Query provides `injectQueries`, which you can use to dynamically execute as many queries in parallel as you'd like. |
|
|
| [//]: # 'DynamicParallelIntro' |
| [//]: # 'Example2' |
|
|
| ```ts |
| export class AppComponent { |
| users = signal<Array<User>>([]) |
| |
| // Please note injectQueries is under development and this code does not work yet |
| userQueries = injectQueries(() => ({ |
| queries: users().map((user) => { |
| return { |
| queryKey: ['user', user.id], |
| queryFn: () => fetchUserById(user.id), |
| } |
| }), |
| })) |
| } |
| ``` |
|
|
| [//]: # 'Example2' |
|
|
