add_action_creator.js

/// add a new user
export const addUserAction = (user) => {
    return (dispatch) => {
        /// axios is a library used to make request to an API, 
        /// return data and manipulate the data .
        axios.post('https://ti-react-test.herokuapp.com/users', user)
            .then(response => {
                console.log(response);
                dispatch(addUser(response.data))
            })
            .catch(error => {
                console.log("eror", error);
            });
    }
}