Take 50% off Redux in Motion today, what a deal! #redux #reactjs @thomastuts

Take 50% off Redux in Motion today, what a deal!  #redux #reactjs @thomastuts

  • Redux in Motion introduces you to the powerful Redux library through high-quality video-based lessons and built-in exercises, so you can put what you learn into practice.
  • Redux in Motion guides you through a complete Redux-based web app, start to finish.
  • As you progress you’ll add custom logging and tracking middleware and learn how to combine React with Redux to connect UI components.
  • “It has explained redux better than I have seen elsewhere.”
  • “A good introduction to Redux, and state management more in general.”

See it. Do it. Learn it! Redux in Motion introduces you to the powerful Redux library through high-quality video-based lessons and built-in exercises, so you can put what you learn into practice.
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Introduction to React.js Redux Basics Tickets, Thu, Sep 21, 2017 at 6:15 PM

Hop on the waitlist for our #ReactJS meetup this Thursday!

  • In this workshop, we’ll go over the most popular state management tool, Redux.
  • With middleware, we’ll be able to handle asynchronous actions like AJAX requests and use the Redux debug tools.
  • Lecture will start around 6:30pm.
  • If you want to sharpen your skills or review a few programming topics before the meetup, go ahead and use Rithm’s Free Online Courses to prepare .
  • If you have any questions or concerns prior to this meetup, please reach out to the Rithm Team by emailing info@rithmschool.com.

Eventbrite – Rithm School presents Introduction to React.js Redux Basics – Thursday, September 21, 2017 at Rithm School, San Francisco, CA. Find event and ticket information.
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Redux middleware logging basics – Ben Garrison – Medium

Redux middleware logging basics  #beer #javascript #middleware #redux #react #reactjs

  • Wouldn’t it be great to be able to go back and look at the exact state of the application at the time of the crash and even the actions that led up to the crash?
  • You would have to spread these things all over your application to catch your store at different phases of change.
  • When you are working on larger apps however, there are advantages to having a single definition point.
  • Let’s see how that may look:You can see above that we have combined 3 middleware:Our new custom loggerRedux Thunk for handling asynch callsRouterMiddleware that captures and redirects actions to your historyYou can combine middleware and they have no need to know about the ‘ware that proceeds or follows them.
  • The moment between the Action and the Reducer is a critical exchange and using middleware to cleanly log state can improve the overall quality of your app.

I have written previously about REDUX and some of its features, if you are interested in a more general introduction, please check out the post below. Implementing this FLUX-style architecture has…
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Redux-saga + React native – psak-works – Medium

Redux-saga + React native  #reduxsaga #redux #tech #react #reduxthunk #reactjs

  • The middleware was designed keeping in mind that a component should just dispatch the action and not have any concern whatsoever as to what happens after.Consider the cycle with saga:side effects with sagaSince the middleware sits separate from the components, its important that these saga files are run in the very start of the app (just like reducers).
  • /saga’;export default function* root_saga() { yield [ fork(getFlight) ];}When an event fires in the child component, then all it has to do is dispatch the action and not worry about what happens action that has the action creator getFlight()const mapDispatchToProps = (dispatch) = { return { onClick: (props) = { dispatch(getFlight()) } }}The action creator getFlight() has a type: GET_FLIGHT.
  • //action.jsexport const GET_FLIGHT = ‘GET_FLIGHT’// action creator is getFlightexport function getFlight() { return { type: GET_FLIGHT };}Now that the action is dispatched, the saga watching for GET_FLIGHT, kicks off and performs the required async action.
  • then((responseJson) = { return responseJson; })};export function* getFlight() { try { yield take(GET_FLIGHT); const flights = yield call(fetchFlights); //1 yield put({type: ‘FLIGHTS_LOADED’, flights}); //2 } catch(error) { yield put({type: ‘FLIGHTS_LOADED_FAILED’, error}); }}The getFlight() saga is ready to take ‘GET_FLIGHT’ action dispatched from the action creator.
  • //reducer.jsexport default function reducer(state, action) { switch(action.type) { case ‘FLIGHTS_LOADED’: return Object.assign({}, state, { flights: action.flights }) default: return state; }}Hence it is very essential to insert a yield where you want the middleware to stop the saga from going forward.

Yepp, thats what I thought initially. After exploring further, I started to like how saga played along with my react-redux application. So what is saga? and why saga? The way I’d like to think of it…
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Testing Common Redux Patterns in React Using AVA

Testing common #Redux patterns in #ReactJS using AVA:

  • Let’s configure the Redux store using our root reducer.
  • As the second argument, we are passing the action which toggles the state of the todo with the given id .
  • When dispatched, the action will cause a todo item of a given id to switch its state, for instance from completed to not completed.
  • /actions’ ; const store = configureStore ({ todos : [ { id : 0 , completed : false , text : ‘buy milk’ }, { id : 1 , completed : false , text : ‘walk the dog’ }, { id : 2 , completed : false , text : ‘study’ } ] }); store .
  • Reducers react to dispatched actions by modifying the store.

This is the second tutorial in our series on testing React and Redux applications.
If you haven’t read the first part, we encourage you to do so.
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What the heck is a ‘thunk’?

What the heck is a 'thunk'? 
#reactjs #js #coding #redux #thunk #programming @daveceddia

  • It would be nice if an action creator could return that function instead of an action object.
  • Same action, but now you can “create” it by calling the userLoggedIn function.
  • then ( function () { // pretend we declared an action creator // called ‘userLoggedOut’, and now we can dispatch it dispatch ( userLoggedOut ()); }); } }
  • It’s a special (and uncommon) name for a function that’s returned by another.
  • Actions are just objects – and they are expected to only be objects.

But seriously: Redux Thunk is a really confusing thing when you first hear about it. I think it’s mostly because of that word “thunk.” So let’s clear that up first.
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Using Saga To Accumulate And Deduplicate Redux Actions

  • GET /users/789 GET /users/456 GET /users/735 …
  • keys ( ids [ resource ]) }, }); delete ids [ resource ]; delete tasks [ resource ]; } function * accumulate ({ payload }) { const { id , resource } = payload ; if ( !
  • GET /posts HTTP 1.1 OK [ { id: 93, title: ‘seatae soluta recusante’, author_id: 789, }, { id: 124, title: ‘commodi ulam sint et’, author_id: 456 }, { id: 125, title: ‘consequatur id enim sint’, author_id: 735 }, …
  • The accumulate() function adds the id from the payload to an ids object that’s in the middleware closure, with a trick to deduplicate ids.
  • Redux Saga allowed us to keep the component logic simple (each component dispatches one single action), and to add sophisticated side effects in the controller part of the application.


Published on 18 October 2016

by François Zaninotto

with tags ReactJS admin-on-rest Redux

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