redux toolkit createAsyncThunk response not persisted

[josephgodwinkimani]

Description of issue

Scenario: User has loaded a page state with data (list of roles). Said user goes offline whilst in same page. He/she reloads same page. State is lost.

Question: How do I persist this state?

rolesSlice.js

import { createSlice, createAsyncThunk } from "@reduxjs/toolkit";
import { axiosCall } from "../../services/API";

// Define the initial state using that type
const initialState = {
  roles: [],
  loading: "",
};

// A function that accepts a Redux action type string and a callback function that should return a promise
export const getRoles = createAsyncThunk("roleSlice/getRoles", async (_, thunkAPI) => {
  try {
    // axios GET request (no credentials required)
    const response = await axiosCall("roles?");
    /**
     * response.data => {"name:" "Super Admin", "active": true}
     */
    return response.data;
  } catch (err) {
    // Use `err.response.data` as `action.payload` for a `rejected` action,
    // by explicitly returning it using the `rejectWithValue()` utility
    return thunkAPI.rejectWithValue(await err.response.data);
  }
});

export const roleSlice = createSlice({
  name: "roles",
  // `createSlice` will infer the state type from the `initialState` argument
  initialState,
  reducers: {},
  extraReducers: (builder) => {
    // A builder provides addCase, addMatcher and addDefaultCase functions that may be called to define what actions this reducer will handle
    builder
      // Add a case reducer to handle a single exact action type
      .addCase(getRoles.pending, (state, action) => {
        state.loading = "pending";
      })
      .addCase(getRoles.fulfilled, (state, action) => {
        state.loading = "fulfilled";
        state.roles.push(action.payload);
      })
      .addCase(getRoles.rejected, (state, action) => {
        state.loading = "rejected";
      });
  },
});

export default roleSlice.reducer;

store.js

import { configureStore, combineReducers } from "@reduxjs/toolkit";
import { roleSlice } from "../app/features/roles/roleSlice";
import {
	persistStore,
	persistReducer,
	FLUSH,
	REHYDRATE,
	PAUSE,
	PERSIST,
	PURGE,
	REGISTER,
} from "redux-persist";
import storage from "redux-persist/lib/storage";

const persistConfig = {
	key: "root",
	storage,
};

const rootReducers = combineReducers({
	roles: roleSlice.reducer,
});

const persistedReducer = persistReducer(persistConfig, rootReducers);

export const store = configureStore({
	reducer: persistedReducer,
	middleware: (getDefaultMiddleware) =>
		getDefaultMiddleware({
			serializableCheck: {
				ignoredActions: [FLUSH, REHYDRATE, PAUSE, PERSIST, PURGE, REGISTER],
			},
		}),
});

export const persistor = persistStore(store);

components/Roles.js

import React, { useState, useEffect } from "react";
import { useSelector, useDispatch } from "react-redux";
import { unwrapResult } from "@reduxjs/toolkit";
import { getRoles } from "../../app/features/roles/roleSlice";
import { XDCTable } from "../../customComponents/XDCTable"

const Roles = () => {
	const dispatch = useDispatch();	
	const { roles } = useSelector((state) => state.roles);
	const [data, setData] = useState([]);
	const RenderTable = () => {
		//return data.map((role) => {
		return Object.keys(data).map((key) => {
			const role = data[key];
			return (
				<tr key={key}>
						<td>{role.name}</td>
						<td>{role.status}</td>
				</tr>
			);
		});
	};

	useEffect(() => {
		const isOnline = window.navigator.onLine;
		// true or false

		if (isOnline) {
			dispatch(getRoles())
				.then(unwrapResult)
				.then((res) => {
					console.log(res);
					if (!res.someErrorMessagefromAPI) {
						setData(res);
					} else {
						//some fn
					}
				})
				.catch((e) => {
					console.log(e);
					//some fn
				});
		} else {
			setData(roles);
		}
	}, [dispatch]);


	return (
		<>
			<XDCTable>
				{RenderTable()}
			</XDCTable>			
		</>
	);
};

export default Roles;

index.js

import React from "react";
import ReactDOM from "react-dom/client";
import * as serviceWorkerRegistration from "./serviceWorkerRegistration";
import reportWebVitals from "./reportWebVitals";
import App from "./App";
import { persistor, store } from "./app/store";
import { Provider } from "react-redux";
import { PersistGate } from "redux-persist/integration/react";

const root = ReactDOM.createRoot(document.getElementById("root"));
root.render(
	<React.StrictMode>
		<Provider store={store}>
			<PersistGate loading={null} persistor={persistor}>
				<App />
			</PersistGate>
		</Provider>
	</React.StrictMode>
);
serviceWorkerRegistration.unregister();
reportWebVitals(console.log);

dependency information

react-redux: 8.0.2 @reduxjs/toolkit: 1.8.5 redux-persist: 6.0.0 redux: 4.2.0