reducers | Library for higher-order manipulation of collections
kandi X-RAY | reducers Summary
kandi X-RAY | reducers Summary
Library for higher-order manipulation of collections
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Top functions reviewed by kandi - BETA
- creates a reducer function that takes a result object and returns a transformer function .
- merge two collections and nested collections
- Takes a source array and returns a new item of the source .
- Drops items from the source array .
- Drops a sequence of items from the source stream .
- Reduce value to a source stream
- Re -ives a source sequence and captures it .
- Creates a reducer that returns a list of reduced values .
- Dispatches all consumers from the current value .
- Takes the input source and sets it to the hub .
reducers Key Features
reducers Examples and Code Snippets
Lines of Code : 768
License : No License
Copy// .gitignore
node_modules
- react // react的核心文件
- @types/react // 声明文件
- react-dom // react dom的操作包
- @types/react-dom
- react-router-dom // react路由包
- @types/react-router-dom
- react-redux
- @types/react-redux
- redux-thunk // 中间件
- @types/redux // .gitignore
node_modules
- react // react的核心文件
- @types/react // 声明文件
- react-dom // react dom的操作包
- @types/react-dom
- react-router-dom // react路由包
- @types/react-router-dom
- react-redux
- @types/react-redux
- redux-thunk // 中间件
- @types/redux npm install --save redux-saga
import { createStore, applyMiddleware } from 'redux';
import createSagaMiddleware from 'redux-saga';
// @ts-ignore
import {createLogger} from 'redux-logger';
import { composeWithDevTools } from 'redux-devtools-extension Community Discussions
Trending Discussions on reducers
QUESTION
I just integrated to redux-toolkit . My goal is to store the result of the query getPosts in a slice, so I can use it across the site or change it.
My createApi is like this:
ANSWER
Answered 2021-Aug-01 at 21:27Let me preface this by: generally, you probably shouldn't.
RTK-Query is a full cache solution - so you should usually not copy state out of it in most solutions, but let RTK-Query keep control over that data.
If you want to change it, temporarily copy it over into local component state (this goes for all kind of form states by the way, you should not edit a form in-place in redux, but temporarily move it over to local component state), use a mutation to save it back to the server and then let RTKQ re-fetch that data to update the cache.
Wherever you need that data, just call useGetPostsQuery() and you're good - if that data is not yet fetched, it will get fetched, otherwise you will just get the value from cache.
Oh, bonus: you should not create an extra api per resource. You should have one single createApi call in your application in almost all cases - you can still split it up over multiple files using Code Splitting.
All that said, of course you can copy that data over into a slice if you have a good use case for it - but be aware that this way you now are responsible for keeping that data up-to-date and cleaning it up if you don't need it any more. Usually, RTKQ would do that for you.
Here is an example on how to clone data from a query over into a slice, taken from the RTKQ examples page:
QUESTION
What would be the best practice for private routing? Maybe I'm doing something wrong, but when user logged in I already am redirect to the /login page
And my second question: Which of these versions is better or you have even better idea?
Code:
Auth
...ANSWER
Answered 2022-Feb-22 at 21:38Either approach is fine. The issue you are seeing is based on the initial redux state value being used for auth check and redirection prior to the effect running to set the auth state. You will want to hold off on redirecting until the authentication status is determined. Use the state to rendering null or some loading indicator until a user is verified authenticated.
QUESTION
I'm a new Next user and have been using Redux with React for a long time I had a lot of trouble in using Redux with Next
I'm done with this solution
store.js
...ANSWER
Answered 2022-Feb-05 at 09:401.) Does using Redux with Nextjs eliminate the SEO advantage?
No, using Redux with NextJs does not hinder the SEO advantage. Redux goes well with NextJS.
The problem lies with your implementation of the data fetching. NextJS does not see the fetched content, because you need to fetch it in either getInitialProps, getServerSideProps, or getStaticProps depending on the way you want your app to work.
See the Data Fetching documentation from NextJS.
Note that getServerSideProps and getStaticProps are the recommended ways of dealing with data fetching.
If you go for getStaticProps, you will need getStaticPaths. Check this answer to see use cases and the difference between the getStaticPaths and getStaticProps as it can be confusing.
TLDR; Instead of putting the data fetching in a useEffect hook, move it inside a getServerSideProps or a getStaticProps function.
QUESTION
I'm using RTK (redux-toolkit) inside a Next.js App. And I'm trying to dispatch an AsyncThunk Action inside "getInitialProps". When searching I found a package called "next-redux-wrapper" that exposes the "store" inside "getInitialProps", but I'm struggling to figure out how to make it work with my project.
Here's a barebone sample of the project where I'm using Typescript with 2 reducers at the moment. One reducer is using AsyncThunk to get data from an API. I already installed "next-redux-wrapper" but I don't know how to implement it around the so that all pages get access to the "store" inside "getInitialProps". The Docs of that package has an example but rather a confusing one.
Here's how my store.ts looks like ...
...ANSWER
Answered 2021-Dec-23 at 06:50Following the Usage guide on next-redux-wrapper repo. Within you store file will be
QUESTION
my privateroute is not redirecting afetr condition is satisfied. in my case when admin click on login it has to check wether token is in localstorage if there is not token then it has to redirect to login page and if token is there it has to redirect to home page. but without toke when i try to access the home page it is redirecting to login page but after login it is not redirecting to home page. Here is my code.
App.js
...ANSWER
Answered 2021-Dec-20 at 09:20Actually at the moment after user logged in, you don't navigate user from login page, you are just updating the localStorage without any redirect. You can navigate from login page like this:
QUESTION
I'm really new to React and need to ask. Can I have a ReactJs Redux store in a library and then use that library in an App that also has a Redux store?
Both of them do this:
...ANSWER
Answered 2021-Nov-13 at 02:55In my opinion, everything is possible in the programming world, definitely, having a multi-store is possible too.
You asked several questions, first of all, I answer them and then explain a little bit more.
Can I have a Reactjs Redux store in a library and then use that library in an App that also has a Redux store?
- Yeah, it's possible, the famous library that makes
Reduxeasy to use isRedux Toolkit, which has a very easy flow to use and implement in your application, even it has a CRA template that you can create your application (zero-config) based on reduxnpx create-react-app [my-app-name] --template reduxor redux-typescriptnpx create-react-app my-app --template redux-typescript. it works properly.
Will these two React Stores collide? Can they exist independently?
- No, they won't collide because each store (never mind it is redux, mobx, or whatever) has a
Providerand you should wrap part of your application or entire of it by using that, so if you wanna have two stores, you can add twoProviders and they won't collide. but, in connecting, and getting some data from stores, you should pay attention that which Provider you are going to call from. so they will be able to exist independently.
QUESTION
New on Reactjs, trying to learn by coding, i need some help/advice with the code, with converting this Redux store to Redux toolkit, here i'm using function called configureStore, what is good way of changing this into using the 'configureStore' which comes from '@reduxjs/toolkit' this is for learning purpose that 'createRootReducer' comes from my reducers.js which combines
...ANSWER
Answered 2021-Oct-10 at 22:13Note in advance:
There is an open issue related to connected-react-router.
In order to get your setup to work, make sure to install history v4.10.1 - newer versions are causing errors:
https://github.com/supasate/connected-react-router/issues/312#issuecomment-647082777
1. Middleware updates
The redux-dev-tools and redux-thunk are already included in redux-toolkit.
If you need to import additional middleware, you can add these in by using getDefaultMiddleware.
getDefaultMiddleware is useful if you want to add some custom middleware, but also still want to have the default middleware added as well:
So with this in mind, you can remove redux-thunk from your package.json.
2. Remove redux imports
You no longer need to import createStore, compose, applyMiddleware, combineReducers from redux. All of these are handled internally in the configureStore API provided by @reduxjs/toolkit.
You can also remove redux from package.json.
3. Apply args to configureStore from @reduxjs/toolkit.
The updated store could look like this:
QUESTION
I'm having a problem where my animations stop working once I npm run-script build and firebase deploy my react app to Firebase hosting.
No idea why this is happening, I've added every web browser compatible keyframes.
Here's what my app looks like when ran on localhost (npm start):
And then what it looks like hosted from firebase:
It's like it can't read my keyframe animations.
Here's index.js:
...ANSWER
Answered 2021-Sep-22 at 21:49I've had a similar problem before but I was using a CSS framework. The problem was with the build cache on my hosting provider. When using create-react-app (that uses Webpack), on the build stage happens the so called 'tree-shake'. It gets rid of unused styles, classes etc from your modules.
A module that works locally might not work on production because it was rid off on your first build and is then not used on the new build due to the build cache.
I don't know if it's the solution to your problem but I suggest you check it out since it worked for me in the past.
QUESTION
I need your help. I'm trying to get API data through redux. I have everything I need: action_types, action_creators, reducer. When I try to draw data, I get an error: Cannot read properties of undefined (reading 'map').What is my mistake? Thank you very much. Here is my code
cartoons.js
...ANSWER
Answered 2021-Sep-16 at 06:55The JSON response is already an array.
QUESTION
I have a react/typescript project. I'm using redux to manage state.
...ANSWER
Answered 2021-Sep-11 at 18:39I'm stupid! Redux docs does not recommend import store in non-component files. I quote "You should avoid importing the store directly into other codebase files. While it may work in some cases, that often ends up causing circular import dependency errors." This is my case, i imported store to ApiClient.ts file, wooops. Following the documentation, I used the injectStore function. I share the link https://redux.js.org/faq/code-structure#how-can-i-use-the-redux-store-in-non-component-files
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