File size: 1,420 Bytes
1e92f2d |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 |
---
id: mutationOptions
title: mutationOptions
---
# Function: mutationOptions()
```ts
function mutationOptions<TData, TError, TVariables, TContext>(
options,
): CreateMutationOptions<TData, TError, TVariables, TContext>
```
Allows to share and re-use mutation options in a type-safe way.
**Example**
```ts
export class QueriesService {
private http = inject(HttpClient)
updatePost(id: number) {
return mutationOptions({
mutationFn: (post: Post) => Promise.resolve(post),
mutationKey: ['updatePost', id],
onSuccess: (newPost) => {
// ^? newPost: Post
this.queryClient.setQueryData(['posts', id], newPost)
},
})
}
}
queries = inject(QueriesService)
idSignal = new Signal(0)
mutation = injectMutation(() => this.queries.updatePost(this.idSignal()))
mutation.mutate({ title: 'New Title' })
```
## Type Parameters
• **TData** = `unknown`
• **TError** = `Error`
• **TVariables** = `void`
• **TContext** = `unknown`
## Parameters
### options
`MutationObserverOptions`\<`TData`, `TError`, `TVariables`, `TContext`\>
The mutation options.
## Returns
[`CreateMutationOptions`](../../interfaces/createmutationoptions.md)\<`TData`, `TError`, `TVariables`, `TContext`\>
Mutation options.
## Defined in
[mutation-options.ts:38](https://github.com/TanStack/query/blob/main/packages/angular-query-experimental/src/mutation-options.ts#L38)
|