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2.0.4 • Public • Published

Fetch Action Creator Tweet

Fetches using standardized, four-part asynchronous actions for redux-thunk.

Dispatch a single, asynchronous action that fetches a request, and your redux store will receive corresponding actions when your fetch API (1) requests, (2) resolves a response, (3) rejects an error, and/or (4) is aborted.

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  • npm install fetch-action-creator --save or
  • yarn add fetch-action-creator

Your redux store must be using the redux-thunk middleware.

Basic Example

import fetchActionCreator from 'fetch-action-creator';
const fetchEmployees = () =>
    // Included in the action types received by your redux store.
    // URL to fetch.

The above example will send a REQUEST_EMPLOYEES action to the redux store, followed by one of the following: ABORT_EMPLOYEES if the request was aborted, REJECT_EMPLOYEES if an error occurred, or RESOLVE_EMPLOYEES if the data was received successfully.

See the documentation for a list of action properties.

Advanced Example

import fetchActionCreator from 'fetch-action-creator';
// We want to include an employee's name in the fetch request.
const fetchAddEmployee = name =>
    // Included in the action types received by your redux store.
    // URL to fetch.
    // Fetch options are configurable.
      body: name,
      headers: {
        'Content-Type': 'text/plain; charset=utf-8'
      method: 'POST'
    // Action mutators can change the default actions sent to the redux reducers.
      // An object mutator will EXTEND the default action sent to the redux reducer.
      // The abort action will now have a name property equal to the one passed to fetchAddEmployee.
      onAbort: { name }
      // The reject action will now have a name property equal to the one passed to fetchAddEmployee
      //    and a timestamp property equal to the time that the error occurred.
      onReject: {
        timestamp: Date.now()
      // A function mutator will RECEIVE the default action sent and mutate it before passing it to the redux reducer.
      // The request action will now have a name property equal to the one passed to fetchAddEmployee.
      onRequest: requestAction => ({
      // The resolve action will now have a name property equal to the one passed to fetchAddEmployee
      //    and a timestamp property equal to the time that the error occurred.
      // You may mutate the action however you want.
      onResolve: resolveAction => {
        resolveAction.timestamp = Date.now();
        if (name.endsWith('*')) {
          resolveAction.type = 'RESOLVE_ADD_MANAGER';
        return {
    // A conditional function will prevent the fetch request if it returns false.
    // The conditional function receives the current redux state as a parameter.
    state => {
      // If this request is already loading (handled in the reducer),
      //    don't make the same request again.
      if (state.employees[name].status === 'loading') {
        return false;
      // People named Bob aren't allowed to work here.
      if (name === 'Bob') {
        return false;
      // Allow the addition of anyone else.
      return true;


id: string

An ID used to generate the types for each dispatched action.


url: string

The URL to which you are dispatching a fetch request.

See also: fetch parameters on MDN

init: null | RequestInit | (state?: Object) => RequestInit

The fetch options which you are including in your fetch request or a function that returns said options, taking the current state as a parameter.

See also: fetch parameters on MDN

Default: Empty object.

actions: Actions | null

An object of action mutators that will change the default actions that are dispatched to the redux reducers.

The keys of this object may be:

  • onAbort, which is used when your fetch request is aborted
  • onReject, which is used when your fetch request encountered an error
  • onRequest, which is used when your fetch request has been initiated
  • onResolve, which is used whe nyour fetch request has resolved successfully

The values of this object may be an object, which will be merged with the default action.

  onAbort: { myKey: 'myValue' }
// creates
  myKey: 'myValue',
  type: 'ABORT_ID'

The values of this object may alternatively be a function, which will receive the default action and return a changed action.

  onAbort: abortAction => ({
    type: abortAction.type.split('').reverse().join('')
// creates
  type: 'DI_TROBA'

Action properties

  • onAbort

    • no additional properties
  • onReject

    • error contains a string with the error message. This may be either a JavaScript error or server response.

    • statusCode contains an integer value of the response status code, e.g. 404.

  • onRequest

    • abortController contains an AbortController instance.

      If you desire to abort any of your fetch requests, you should store this instance in your redux state.

      If the user's browser does not support aborting requests, the value will be null.

  • onResolve

    • body contains the body of the response. This can be a JavaScript object or string.

    • headers contains an instance of Headers with which the server responded to the request.

    • statusCode contains an integer value of the response status code, e.g. 200.

conditional?: (state: Object) => boolean

If present, this function is called prior to the fetch request.

If it returns true, the fetch request will continue. If it returns false, the entire asynchronous action will be ignored.

The parameter of this function is a current snapshot of your redux state.


npm i fetch-action-creator

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