getState in redux-saga?

Question

I have a store with a list of items. When my app first loads, I need to deserialize the items, as in create some in-memory objects based on the items. The items are stored in my redux store and handled by an itemsReducer.

I'm trying to use redux-saga to handle the deserialization, as a side effect. On first page load, I dispatch an action:

dispatch( deserializeItems() ); 

My saga is set up simply:

function* deserialize( action ) {     // How to getState here??     yield put({ type: 'DESERISLIZE_COMPLETE' }); }  function* mySaga() {     yield* takeEvery( 'DESERIALIZE', deserialize ); } 

In my deserialize saga, where I want to handle the side effect of creating in-memory versions of my items, I need to read the existing data from the store. I'm not sure how to do that here, or if that's a pattern I should even be attempting with redux-saga.

Answer 1

you can use select effect

import {select, ...} from 'redux-saga/effects'  function* deserialize( action ) {     const state = yield select();     ....     yield put({ type: 'DESERIALIZE_COMPLETE' }); } 

also you can use it with selectors

const getItems = state => state.items;  function* deserialize( action ) {     const items = yield select(getItems);     ....     yield put({ type: 'DESERIALIZE_COMPLETE' }); }