Thế Giới Giải Mã: ReactJS Redux

Showing posts with label ReactJS Redux. Show all posts

18 July 2018

ReactJS + Redux: React Router IndexRoute

By Admin at 12:41:00 AM ReactJS Redux

9-react-router-indexroute:

create-react-app 9-react-router-indexroute
cd 9-react-router-indexroute
npm install redux react-redux redux-logger redux-promise-middleware axios --save
npm install react-router@3 --save

cd src
mkdir actions components containers reducers
npm start

Result

<< Github >>

ReactJS + Redux: React Router

By Admin at 11:15:00 AM ReactJS Redux

8-react-router:

create-react-app 8-react-router
cd 8-react-router
npm install redux react-redux redux-logger redux-promise-middleware axios --save
npm install react-router@3 --save

cd src
mkdir actions components containers reducers
npm start

Result

<< Github >>

ReactJS + Redux: List Component

By Admin at 5:45:00 AM ReactJS Redux

7-user-list-data-readux:

create-react-app 7-user-list-data-readux
cd 7-user-list-data-readux
npm install redux react-redux redux-logger redux-promise-middleware axios --save

cd src
mkdir actions components containers reducers
npm start

Result

<< Github >>

ReactJS + Redux: Redux Containers Call Ajax

By Admin at 2:49:00 AM ReactJS Redux

6-redux-containers-call-ajax:

create-react-app 6-redux-containers-call-ajax
cd 6-redux-containers-call-ajax
npm install redux react-redux redux-logger redux-promise-middleware axios --save

cd src
mkdir actions components containers reducers
npm start

Result

<< Github >>

ReactJS + Redux: Redux Containers React

By Admin at 1:02:00 PM ReactJS Redux

5-redux-containers:

create-react-app 5-redux-containers
cd 5-redux-containers
npm install redux react-redux --save

cd src
mkdir actions components containers reducers
npm start

Main

ReatcJS 2018

import React from 'react';
import { render } from 'react-dom';

export default class Main extends React.Component {
    constructor(props){
        super(props);
        this.state = {
            name: "", age: ""
        }
    }
    render() {
        const userList = this.props.data.map( x => {
            return <h1 key= {x.name.toString()} >{ x.name } - {x.age} </h1>
        })
        return(
            <form className="container col-sm-10">
                { userList }
                <div class="form-group">
                    <label for="exampleInputEmail1">Full name</label>
                    <input type="text" placeholder="Input Name" value={this.state.name} onChange={this.onNameChanged} className="form-control"/>
                    <label for="exampleInputEmail1">Age</label>
                    <input type="text" placeholder="Input Age" value={this.state.age} onChange={this.onAgeChanged} className="form-control"/>
                </div>
                <button type="button" onClick={this.onSubmit} className="btn btn-success">Submit</button>
            </form>
        );
    }

    onSubmit = (e) => {
        this.props.onAddUser({name: this.state.name, age: this.state.age})
    }

    onNameChanged = (event) => {
        this.setState({ name: event.target.value });
    }

    onAgeChanged = (event) => {
        this.setState({ age: event.target.value });
    }
}

Actions

ReatcJS 2018

export function addUser(user) {
    return {
        type: 'ADD',
        user: user
    }
}

export function removeUser(user) {
    return {
        type: 'REMOVE',
        user: user
    }
}

Containers

ReatcJS 2018

import { connect } from 'react-redux';
import Main from '../components/Main';
import { addUser } from '../actions/user';

const mapStateToProps = (state) => ({
    data: state,
})
const mapDispatchToProps = (dispatch) => {
    return {
        onAddUser: (user) => {
            dispatch(addUser(user))
        }
    }
}
const UsersContainer = connect(
    mapStateToProps,
    mapDispatchToProps
)(Main)

export default UsersContainer;

Reducers

ReatcJS 2018

export function usersReducer(state = {}, action) {

    switch(action.type) {
        case 'ADD':
            return [...state, action.user]
        default:
            return state
    }
}

Result

<< Github >>

ReactJS + Redux: Redux Promise

By Admin at 11:10:00 AM ReactJS Redux

3-async-actions-promises:

create-react-app 3-async-actions-promises
cd 3-async-actions-promises
npm install redux redux-logger redux-promise-middleware axios --save
npm start

Redux Promise

ReatcJS 2018

import { createStore, applyMiddleware } from 'redux';
import { createLogger } from 'redux-logger';
import createPromise from 'redux-promise-middleware';
import axios from 'axios';

const logger = createLogger();
const promise = createPromise();
const middleware  = applyMiddleware(logger, promise);
const store = createStore(userReducer,middleware);

class MyApp extends React.Component {
  constructor(props){
    super(props);
    this.state = {status: '', statusClass: '', name: '', email: '', gender:''}
    store.subscribe(() => {
      const state = store.getState();
      this.setState({name: state.user && state.user.name});
      this.setState({email: state.user && state.user.email});
      this.setState({gender: state.user && state.user.gender});
      this.setState({status: state.status});
      this.setState({statusClass: state.statusClass});
    })
  }
  render() {
    return (
      <div className="container">
        <button className='btn btn-info' onClick={ this.handleGetUser }>New Random User</button>
        <h2 className={ this.state.statusClass }>{ this.state.status }</h2>       
        <h2>{ this.state.name }</h2>
        <h2>{ this.state.email }</h2>
        <h2>{ this.state.gender }</h2>
      </div>
    );
  }
  handleGetUser = (e) => {
    store.dispatch({
        type: 'FETCH_USER',
        payload: axios.get("https://randomuser.me/api")
    });
  }
}
// REDUCER
function userReducer (state = {}, action) {
  const user = {
    name: '',
    email: '',
    gender: ''
  };
  switch (action.type) {
    case 'FETCH_USER_PENDING':
      state = {...state, status: 'Pending...', statusClass: 'text-info'}
      break;
    case 'FETCH_USER_FULFILLED':
      user.name = `${action.payload.data.results[0].name.first} ${action.payload.data.results[0].name.last}`
      user.email = action.payload.data.results[0].email;
      user.gender = action.payload.data.results[0].gender;
      state = {...state,  user, status: 'User Recieved', statusClass: 'text-success'}
      break;
    case 'FETCH_USER_REJECTED':
      state = {...state, status: `${action.payload.message}`, statusClass: 'text-danger'}
      break;
    default:
      return state;
  }
  return state;
}

ReactDOM.render(<MyApp />, document.getElementById('root'));

<< Github >>

ReactJS + Redux: Asyns Actions - Redux Thunk

By Admin at 5:19:00 AM ReactJS Redux

2-async-actions:

create-react-app 2-async-actions
cd 2-async-actions
npm install redux redux-logger redux-thunk axios --save
npm start

Asyns actions

ReatcJS 2018

const logger = createLogger();
const middleware  = applyMiddleware(logger, thunk);
const store = createStore(userReducer,middleware);

class MyApp extends React.Component {
  constructor(props){
    super(props);
    this.state = {status: '', statusClass: '', name: '', email: '', gender:''}
    store.subscribe(() => {
      const state = store.getState();
      this.setState({name: state.user && state.user.name});
      this.setState({email: state.user && state.user.email});
      this.setState({gender: state.user && state.user.gender});
      this.setState({status: state.status});
      this.setState({statusClass: state.statusClass});
    })
  }
  render() {
    return (
      <div className="container">
        <button className='btn btn-info' onClick={ this.handleGetUser }>New Random User</button>
        <h2 className={ this.state.statusClass }>{ this.state.status }</h2>       
        <h2>{ this.state.name }</h2>
        <h2>{ this.state.email }</h2>
        <h2>{ this.state.gender }</h2>
      </div>
    );
  }
  handleGetUser = (e) => {
      store.dispatch(dispatch => {
        dispatch({type: 'GET_USER'});
        // ASYNC ACTION
        axios.get('https://randomuser.me/api').then(response => {
          dispatch({type: 'USER_RECIEVED', payload: response.data.results})
        }).catch(error => {
          dispatch({ type: 'ERROR', payload: error})
        })
        dispatch({type: 'AFTER ASYNC ACTION'});
      });
  }
}
// REDCUER
function userReducer(state = {}, action) {
  const user = {
    name: '',
    email: '',
    gender: ''
  };
  switch (action.type) {
    case 'GET_USER':
      state = {...state, status: 'Pending...', statusClass: 'text-info'}
      break;
    case 'USER_RECIEVED':
      user.name = `${action.payload[0].name.first} ${action.payload[0].name.last}`
      user.email = action.payload[0].email;
      user.gender = action.payload[0].gender;
      state = {...state,  user, status: 'User Recieved', statusClass: 'text-success'}
      break;
    case 'ERROR':
      state = {...state, status: `${action.payload.message}`, statusClass: 'text-danger'}
      break;
    default:
      return state;
  }
  return state;
}

ReactDOM.render(<MyApp />, document.getElementById('root'));

Github

ReactJS + Redux: Sử dụng Middleware - Redux Middleware #2

By Admin at 11:49:00 PM ReactJS Redux

Redux Middleware

ReatcJS 2018

import { createStore, applyMiddleware } from 'redux';
import { createLogger } from 'redux-logger'
// REDCUER
function counterReducer (state = { count: 0 }, action) {
  var nextState = {
    count: state.count
  }
  switch (action.type) {
    case 'ADD':
      nextState.count = state.count + 1
      break;
    case 'MINUS':
      nextState.count = state.count - 1
      break;
    case 'RESET':
      nextState.count = 0
      break;
    default:
      return nextState;
  }
  return nextState;
}
const logger = createLogger();
const middleware  = applyMiddleware(logger);
const store = createStore(counterReducer,middleware );
//Class render
class MyApp extends React.Component {
  constructor(props) {
    super(props);
    this.state = {count: 0};
    store.subscribe(() => {
       console.log("store changed", store.getState())
       this.setState({count: store.getState().count});
    })
  }
  render(){
    return (
      <div className="container">
        <h1>{ this.state.count }</h1>
        <button className='btn btn-success mr-1' onClick={this.handleAdd}>Add</button>
        <button className='btn btn-info mr-1' onClick={this.handleMinus}>Minus</button>
        <button className='btn btn-danger' onClick={this.handleReset}>Reset</button>
      </div>
    );
  }
  handleAdd = (e) => {
    store.dispatch({ type: 'ADD' })
  }
  handleMinus = (e) => {
    store.dispatch({ type: 'MINUS' })
  }
  handleReset = (e) => {
    store.dispatch({ type: 'RESET' })
  }
}
ReactDOM.render(<MyApp />, document.getElementById('root'));

Github

ReactJS + Redux: Sử dụng Middleware - Redux Middleware

By Admin at 4:42:00 AM ReactJS Redux

Redux Middleware

ReatcJS 2018

import { applyMiddleware, createStore } from "redux";

const userReducer = (state={}, action) => {
    switch (action.type) {
        case "CHANGE_NAME":
            //state.name = action.payload;
            state = {...state, name: action.payload};
            break;
        case "CHANGE_AGE":
            //state.age = action.payload;
            state = {...state, age: action.payload};
            break;
        case "ERROR":
            throw new Error("Error notification!");
            break;
    }
    return state;
}
const logger = (store) => (next) => (action) => {
  console.log("middleware logger");
  next(action);
}
const error = (store) => (next) => (action) => {
  try{
    next(action);
  } catch(e){
    console.log("middleware error",e);
  }
}

const middleware = applyMiddleware(logger, error);

const store = createStore(userReducer,1,middleware);

store.subscribe(() => {
 console.log("store changed", store.getState())
})
//dispatch action
store.dispatch({type: "CHANGE_NAME", payload: "Antonio"});
store.dispatch({type: "CHANGE_AGE", payload: 45});
store.dispatch({type: "ERROR", payload: 45});

ReactDOM.render(
    <App />,
   document.getElementById('root'));

npm start

Result

ReactJS + Redux: Sử dụng nhiều Reducer - Multiple reducers with redux console

By Admin at 11:20:00 PM ReactJS Redux

Multiple reducers

ReatcJS 2018

import { combineReducers, createStore } from "redux";

//Reducer lắng nghe các action gọi đến từ dispatch
const userReducer = (state={}, action) => {
    switch (action.type) {
        case "CHANGE_NAME":
            //state.name = action.payload;
            state = {...state, name: action.payload};
            break;
        case "CHANGE_AGE":
            //state.age = action.payload;
            state = {...state, age: action.payload};
            break;
    }
    return state;
}
const contactReducer = (state=[], action) => {
  switch (action.type) {
      case "CHANGE_EMAIL":
          //state.email = action.payload;
          state = {...state, email: action.payload};
          break;
      case "CLEAR":
          //state.age = action.payload;
          state = {...state, email: action.payload};
          break;
  }
  return state;
}
//Nhiều reducers
const reducers = combineReducers({
  user: userReducer,
  contact: contactReducer,
})
//Tạo mới store nội dung là function reducer
const store = createStore(reducers);
//Đăng ký store
store.subscribe(() => {
 console.log("store changed", store.getState())
})
//dispatch action
store.dispatch({type: "CHANGE_NAME", payload: "Antonio"});
store.dispatch({type: "CHANGE_AGE", payload: 45});
store.dispatch({type: "CHANGE_EMAIL", payload: "Antonio@example.com"});
store.dispatch({type: "CLEAR", payload: null});

ReactDOM.render(
    <App />,
   document.getElementById('root'));

npm start

Result

ReactJS + Redux: Basic redux console

By Admin at 10:06:00 PM ReactJS Redux

Add liblary

npm install

Basic redux console

ReatcJS 2018

import { createStore } from "redux";

//Reducer lắng nghe các action gọi đến từ dispatch
export function reducer(state, action) {
    switch (action.type) {
        case "INC":
            return state + action.payload;
        case "DEC":
            return state - action.payload;
        default: {
            return state;
        }
    }
}
//Tạo mới store nội dung là function reducer
const store = createStore(reducer, 0);
//Đăng ký store
store.subscribe(() => {
 console.log("store changed", store.getState())
})
//dispatch action
store.dispatch({type: "INC", payload: 2});
store.dispatch({type: "INC", payload: 232});
store.dispatch({type: "INC", payload: 65672});
store.dispatch({type: "DEC", payload: 27980780});

ReactDOM.render(
    <App />,
   document.getElementById('root'));

npm start

Result

ReactJS + Redux: Tạo project React + Redux với Git Command (Git Bash Here)

By Admin at 3:37:00 AM ReactJS Redux

Tạo project React + Redux với Git Command

ReatcJS 2018

create-react-app react-redux-project    <= Create ReactJS project
clear   <= Xóa console terminal
ls  <= List
cd react-redux-project
ls -la   <= List All
cat package.json   <= Mở xem file
npm start   <= Chạy project