redux-observable is a redux middleware for performing side effects (epics) using RxJS.
redux-observable is a redux middleware for performing side effects (epics) using RxJS.
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Questions tagged [redux-observable]
654 questions
6
votes
1 answer
Should we create one Epic per action type? in redux-observable
I am in process of redux-observable learning, and I have some doubts:
Should we create an Epic for each action to watch?
export const actionEpic = action $ => action$.ofType('ACTION')
export const action2Epic = action $ =>…
MatCas
- 451
- 6
- 18
5
votes
2 answers
Can't use redux-observable with Stencil@one : "Class constructor Observable cannot be invoked without 'new'" error on ActionsObservable class
I have a Stencil component library using @Stencil/redux, redux, redux-observable and redux-actions. Everything worked fine before but I'm trying to upgrade to Stencil@One (1.0.0-beta.5).
I have now an error during the Redux store creation. This is…
Elvynia
- 327
- 2
- 11
5
votes
2 answers
TypeError: action$.ofType(...).mergeMap is not a function
I am new to reactjs and trying to integrate redux with my existing project.
This is my index.js file in store
import 'rxjs'
import { createStore, combineReducers, applyMiddleware } from 'redux'
import { reducer as formReducer } from…
Dark Knight
- 785
- 2
- 13
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5
votes
1 answer
rxjs v6 / redux-observable v1.0.0: Operators not working in epic
I am using the latest version of redux-observable and Rxjs i.e
// My version
"redux-observable": "^1.0.0",
"rxjs": "^6.3.2"
The store - middleware, setup looks like this:
// Setting up middlewares
import { pingEpic } from './epics';
import…
Siddhartha Chowdhury
- 2,273
- 1
- 22
- 37
5
votes
0 answers
error on createEpicMiddleware
When I call createEpicMiddleware(epic) function on Angular2+,
there is an error:
"error TS2560: Value of type '(action$: any) => any' has no properties
in common with type 'Options'. Did you mean to call it?"
Even if using the sample official…
jisu lee
- 81
- 1
- 3
5
votes
1 answer
How to use Firestore realtime updates (onSnapshot) with redux-observable/rxjs?
I am able to setup redux-observable with normal Firestore queries
export const getStatementsEpic = (action$, store) => {
return action$.ofType(GET_STATEMENTS)
.filter(() => {
const state = store.getState()
return state.auth.user
…
Jiew Meng
- 74,635
- 166
- 442
- 756
5
votes
1 answer
Alternative to direct calling of store.dispatch()
Since in the latest redux-observable (0.17) is direct calling of store.dispatch() deprecated, I wonder what is an alternative if I need to dispatch actions from the outside of my redux app.
Example:
Let's say I have this function which initialize…
trubi
- 245
- 2
- 11
5
votes
1 answer
Cannot read property 'type' of undefined (react-router-redux)
I am trying to redirect to the page after signing out. However, every time when I sign out, it directs the page successfully. However, I still got the error
Cannot read property 'type' of undefined
Further research by "Pause on Caught Exceptions",…
Hongbo Miao
- 31,551
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5
votes
1 answer
Redux Observables / RxJS: How to make epic that returns different actions based on if / else?
I am trying to hook up my app with in app purchases using this: https://github.com/chirag04/react-native-in-app-utils
I have an epic where I want to emit success if it succeeds, and failure if it fails. Something like this:
import 'rxjs';
import {…
bigpotato
- 22,922
- 46
- 147
- 286
5
votes
2 answers
Concurrent Ajax requests with Rxjs
I'am currently switched from promises to observables. I am using Redux-Observable for my react app. Basically, I am looking for the best operator that will enable mutliple, concurrent ajax calls and return the responses when all the observables have…
grustamli
- 193
- 2
- 11
5
votes
3 answers
React Native computational heavy task
Very simple and common use case, but I can't find satisfying answer.
I have react native app which needs to store some data locally. I am using redux and redux-observables and Realm as a storage.
What I need is: some action occur, let's say…
trubi
- 245
- 2
- 11
4
votes
1 answer
redux-observable use RxJS to emit progress actions for ajax call
I have been wrestling with this problem and feel like I have a fundamental misunderstanding. I am using the redux-observable library in React which glues redux together with RxJS for handling asynchrony. My problem is that I have to handle a large…
Matthew Crews
- 3,223
- 7
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- 46
4
votes
1 answer
RXJS redux observable perform multiple api calls
I have an array of contacts and would like to perform an API calls for each object in the contacts array.
I have tried to loop over each item and make the call to fetchJson$, however, I realise that this approach is incorrect.
What is the correct…
Laurie Williams
- 373
- 2
- 8
4
votes
0 answers
Type 'Dispatch' is not assignable to type 'Dispatch'
hello i'm try to user redux with angular.
but i have this error message when i try to run my angular app:
ERROR in node_modules/@angular-redux/store/lib/src/components/ng-redux.d.ts(10,31): error TS2420: Class 'NgRedux' incorrectly…
Michel Lammens
- 341
- 1
- 2
- 10
4
votes
3 answers
How to prevent starting the same call twice from epic
My epic wakes up when the REMOTE_DATA_STARTED action is dispatched and it fetches data using action.url and action.owner.
I need to make sure I don't initiate two concurrent calls to the same owner/url. Once the call for a owner/url is completed,…
Sylvain
- 18,671
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