upstream-tanstack-query/docs/framework/angular/reference/interfaces/MutationObserverLoadingResult.md

id, title

id	title
MutationObserverLoadingResult	MutationObserverLoadingResult

Defined in: packages/query-core/src/types.ts:1421

The raw state stored on a Mutation instance. This is the underlying state that observer results (e.g. MutationObserverResult) are derived from.

Extends

• MutationObserverBaseResult<TData, TError, TVariables, TOnMutateResult>

Type Parameters

TData

TData = unknown

TError

TError = DefaultError

TVariables

TVariables = void

TOnMutateResult

TOnMutateResult = unknown

Properties

context

context: TOnMutateResult | undefined;

Defined in: packages/query-core/src/mutation.ts:40

The value returned by onMutate, if defined. Passed to onSuccess, onError and onSettled as the mutation's context.

Inherited from

MutationObserverBaseResult.context

---

data

data: undefined;

Defined in: packages/query-core/src/types.ts:1432

The last successfully resolved data for the mutation.

Overrides

MutationObserverBaseResult.data

---

error

error: null;

Defined in: packages/query-core/src/types.ts:1434

The error object for the mutation, if an error was encountered.

• Defaults to null.

Overrides

MutationObserverBaseResult.error

---

failureCount

failureCount: number;

Defined in: packages/query-core/src/mutation.ts:53

The number of times the mutation function has failed for the current attempt.

Inherited from

MutationObserverBaseResult.failureCount

---

failureReason

failureReason: TError | null;

Defined in: packages/query-core/src/mutation.ts:57

The reason the current attempt failed, as reported by the retryer.

Inherited from

MutationObserverBaseResult.failureReason

---

isError

isError: false;

Defined in: packages/query-core/src/types.ts:1435

A boolean variable derived from status.

• true if the last mutation attempt resulted in an error.

Overrides

MutationObserverBaseResult.isError

---

isIdle

isIdle: false;

Defined in: packages/query-core/src/types.ts:1436

A boolean variable derived from status.

• true if the mutation is in its initial state prior to executing.

Overrides

MutationObserverBaseResult.isIdle

---

isPaused

isPaused: boolean;

Defined in: packages/query-core/src/mutation.ts:62

Whether the mutation is currently paused (see network mode), or is waiting for another mutation with the same scope to finish.

Inherited from

MutationObserverBaseResult.isPaused

---

isPending

isPending: true;

Defined in: packages/query-core/src/types.ts:1437

A boolean variable derived from status.

• true if the mutation is currently executing.

Overrides

MutationObserverBaseResult.isPending

---

isSuccess

isSuccess: false;

Defined in: packages/query-core/src/types.ts:1438

A boolean variable derived from status.

• true if the last mutation attempt was successful.

Overrides

MutationObserverBaseResult.isSuccess

---

mutate

mutate: MutateFunction<TData, TError, TVariables, TOnMutateResult>;

Defined in: packages/query-core/src/types.ts:1393

The mutation function you can call with variables to trigger the mutation and optionally hooks on additional callback options.

Param

The variables object to pass to the mutationFn.

Param

This function will fire when the mutation is successful and will be passed the mutation's result.

Param

This function will fire if the mutation encounters an error and will be passed the error.

Param

This function will fire when the mutation is either successfully fetched or encounters an error and be passed either the data or error.

Remarks

• If you make multiple requests, onSuccess will fire only after the latest call you've made.
• All the callback functions (onSuccess, onError, onSettled) are void functions, and the returned value will be ignored.

Inherited from

MutationObserverBaseResult.mutate

---

reset()

reset: () => void;

Defined in: packages/query-core/src/types.ts:1397

A function to clean the mutation internal state (i.e., it resets the mutation to its initial state).

Returns

void

Inherited from

MutationObserverBaseResult.reset

---

status

status: "pending";

Defined in: packages/query-core/src/types.ts:1439

The status of the mutation.

• Will be:
  • idle initial status prior to the mutation function executing.
  • pending if the mutation is currently executing.
  • error if the last mutation attempt resulted in an error.
  • success if the last mutation attempt was successful.

Overrides

MutationObserverBaseResult.status

---

submittedAt

submittedAt: number;

Defined in: packages/query-core/src/mutation.ts:74

The timestamp for when the mutation was submitted.

Inherited from

MutationObserverBaseResult.submittedAt

---

variables

variables: TVariables;

Defined in: packages/query-core/src/types.ts:1433

The variables object passed to the mutationFn.

Overrides

MutationObserverBaseResult.variables