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How to call callback function after dispatch action Redux

By : Charlie Kelly
Date : September 16 2020, 02:00 AM
I hope this helps you . I use React Redux and I create a function to login, but I need to get a callback return after successfull login and redirect user to a page. , The cb is missing in your connect(...)
Here is the fix
code :
handleLogin(e) {
        this.setState({ showLoader: true });
        const request = new Object();
        if (this.validator.allValid()) {
            request.email = this.state.email;
            request.password = this.state.password;
            this.props.login(request, () => {
                //get callbach here

            this.setState({ showLoader: false });

        } else {
            this.setState({ showLoader: false });
const mapStateToProps = state => {
    return {
        authState: state
const mapDispatchToProps = dispatch => {
    return {
        login: (request, cb) => dispatch(login(request, cb))
export default connect(mapStateToProps, mapDispatchToProps)(LoginForm);

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React-Redux Action: 'Dispatch' is not a function

By : Zulfiqar Ali Soomro
Date : March 29 2020, 07:55 AM
I wish this help you Still getting used to Redux, first off. I have a component that should simply load data for display when the component loads. I have redux setup with the store: , You have to do something like this:
code :
export const getMetaOutsider = () => {
  return (dispatch) => {
    .then(res => {
      dispatch({ type: GET_OUTSIDER_META_INFORMATION, payload: res.data });
    .catch(err =>
      dispatch({ type: POPULATE_ERRORS, payload: err.response.data })

Can't use map function after Dispatch Action, React + Redux

By : Jose Rodriguez
Date : March 29 2020, 07:55 AM
fixed the issue. Will look into that further The double render is totally normal: Your component render once, then call the carregarLojas method which is async. When resolved, the method will update your redux store, which is connected with the props of your component (mapStateToProps). When a prop is updated, it cause automatically a rerender.
Also, for your map problem, you didn't initialized lojasTeste as an array, but as an object. You can't use map on an object (cf https://developer.mozilla.org/fr/docs/Web/JavaScript/Reference/Objets_globaux/Array/map)

Why every Redux Middleware can call next(action), wouldn't it dispatch one action multiple times?

By : Meron
Date : March 29 2020, 07:55 AM
With these it helps From the applyMiddleware source code you have that dispatch is modified as follows:
code :
const fakeStore = {
  getState: store.getState,
  dispatch: (...args) => dispatch(...args)
const chain = middlewares.map(middleware => middleware(fakeStore))
dispatch = compose(...chain)(store.dispatch)

Dispatch is not a function when testing a redux action

By : user3551485
Date : March 29 2020, 07:55 AM
hope this fix your issue I'm learning to write tests for action creators with Jest and Enzyme. This is an action creator that I am using with React Native. , First you will need to return the dispatched action from your thunk
code :
export const fetchFail = (dispatch) => {
    return dispatch({
        type: FETCH_FAIL,
        payload: "An error occurred. Try again later."
test('should fail fetch', async () => {
    const payload = {
        type: FETCH_FAIL,
        payload: "An error occurred. Try again later."

    const store = mockStore({ data:[], isConnected: false });
    // removed the parentheses around fetchFail()

typescript for redux action returning dispatch function

By : Bailey Brubaker
Date : March 29 2020, 07:55 AM
hope this fix your issue I think it will work if you use store.dispatch(addFiles(files))
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