CODEWITHSUNDEEP
reactjsreduxreact-reduxredux-saga
kenpeter
kenpeter

Reputation: 8274

dispatch the same event order of arrival in saga and redux

case 1

say I dispatch({type: TEST_EVENT}) in UI with useEffect, and both my saga and reducer are listening to the same event. Who will get it first.

case 2

say I dispatch({type: TEST_EVENT}) in UI with useEffect, then saga listening to it, then in saga I do yield put({type: 'TEST_EVENT_1'}, then reducer (if listening TEST_EVENT_1) will be able to receive it. Could someone confirm this?

Upvotes: 1

Views: 744

Answers (1)

Lin Du
Lin Du

Reputation: 102457

case 1: From the redux-saga middleware source code, we know if both saga and reducer are listening to the same action type. The reducer will get the action firstly.

case 2: The recommended workflow is: dispatch SOME_EVENT action => watcher saga => worker saga => do something(call API, computation, etc..) => dispatch SOME_EVENT_FULFILLED/SOME_EVENT_REJECTED action to reducer.

Upvotes: 1

Related Questions