Added Chapter 2

02_lesson
gitdagray 2022-03-24 10:08:28 -05:00
parent 21174697d0
commit a405f40185
34 changed files with 55212 additions and 2 deletions

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# See https://help.github.com/articles/ignoring-files/ for more about ignoring files.
# dependencies
/node_modules
/.pnp
.pnp.js
# testing
/coverage
# production
/build
# misc
.DS_Store
.env.local
.env.development.local
.env.test.local
.env.production.local
npm-debug.log*
yarn-debug.log*
yarn-error.log*

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{
"name": "02_lesson",
"version": "0.1.0",
"private": true,
"dependencies": {
"@reduxjs/toolkit": "^1.8.0",
"date-fns": "^2.28.0",
"react": "^17.0.2",
"react-dom": "^17.0.2",
"react-redux": "^7.2.6",
"react-scripts": "5.0.0"
},
"scripts": {
"start": "react-scripts start",
"build": "react-scripts build",
"eject": "react-scripts eject"
},
"eslintConfig": {
"extends": [
"react-app",
"react-app/jest"
]
},
"browserslist": {
"production": [
">0.2%",
"not dead",
"not op_mini all"
],
"development": [
"last 1 chrome version",
"last 1 firefox version",
"last 1 safari version"
]
}
}

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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8" />
<link rel="icon" href="%PUBLIC_URL%/favicon.ico" />
<meta name="viewport" content="width=device-width, initial-scale=1" />
<meta name="theme-color" content="#000000" />
<meta
name="description"
content="Web site created using create-react-app"
/>
<link rel="apple-touch-icon" href="%PUBLIC_URL%/logo192.png" />
<!--
manifest.json provides metadata used when your web app is installed on a
user's mobile device or desktop. See https://developers.google.com/web/fundamentals/web-app-manifest/
-->
<link rel="manifest" href="%PUBLIC_URL%/manifest.json" />
<!--
Notice the use of %PUBLIC_URL% in the tags above.
It will be replaced with the URL of the `public` folder during the build.
Only files inside the `public` folder can be referenced from the HTML.
Unlike "/favicon.ico" or "favicon.ico", "%PUBLIC_URL%/favicon.ico" will
work correctly both with client-side routing and a non-root public URL.
Learn how to configure a non-root public URL by running `npm run build`.
-->
<title>React App</title>
</head>
<body>
<noscript>You need to enable JavaScript to run this app.</noscript>
<div id="root"></div>
<!--
This HTML file is a template.
If you open it directly in the browser, you will see an empty page.
You can add webfonts, meta tags, or analytics to this file.
The build step will place the bundled scripts into the <body> tag.
To begin the development, run `npm start` or `yarn start`.
To create a production bundle, use `npm run build` or `yarn build`.
-->
</body>
</html>

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{
"short_name": "React App",
"name": "Create React App Sample",
"icons": [
{
"src": "favicon.ico",
"sizes": "64x64 32x32 24x24 16x16",
"type": "image/x-icon"
},
{
"src": "logo192.png",
"type": "image/png",
"sizes": "192x192"
},
{
"src": "logo512.png",
"type": "image/png",
"sizes": "512x512"
}
],
"start_url": ".",
"display": "standalone",
"theme_color": "#000000",
"background_color": "#ffffff"
}

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# https://www.robotstxt.org/robotstxt.html
User-agent: *
Disallow:

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import PostsList from "./features/posts/PostsList";
import AddPostForm from "./features/posts/AddPostForm";
function App() {
return (
<main className="App">
<AddPostForm />
<PostsList />
</main>
);
}
export default App;

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import { configureStore } from "@reduxjs/toolkit";
import postsReducer from '../features/posts/postsSlice';
import usersReducer from '../features/users/usersSlice';
export const store = configureStore({
reducer: {
posts: postsReducer,
users: usersReducer
}
})

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import { useState } from "react";
import { useDispatch, useSelector } from "react-redux";
import { postAdded } from "./postsSlice";
import { selectAllUsers } from "../users/usersSlice";
const AddPostForm = () => {
const dispatch = useDispatch()
const [title, setTitle] = useState('')
const [content, setContent] = useState('')
const [userId, setUserId] = useState('')
const users = useSelector(selectAllUsers)
const onTitleChanged = e => setTitle(e.target.value)
const onContentChanged = e => setContent(e.target.value)
const onAuthorChanged = e => setUserId(e.target.value)
const onSavePostClicked = () => {
if (title && content) {
dispatch(
postAdded(title, content, userId)
)
setTitle('')
setContent('')
}
}
const canSave = Boolean(title) && Boolean(content) && Boolean(userId)
const usersOptions = users.map(user => (
<option key={user.id} value={user.id}>
{user.name}
</option>
))
return (
<section>
<h2>Add a New Post</h2>
<form>
<label htmlFor="postTitle">Post Title:</label>
<input
type="text"
id="postTitle"
name="postTitle"
value={title}
onChange={onTitleChanged}
/>
<label htmlFor="postAuthor">Author:</label>
<select id="postAuthor" value={userId} onChange={onAuthorChanged}>
<option value=""></option>
{usersOptions}
</select>
<label htmlFor="postContent">Content:</label>
<textarea
id="postContent"
name="postContent"
value={content}
onChange={onContentChanged}
/>
<button
type="button"
onClick={onSavePostClicked}
disabled={!canSave}
>Save Post</button>
</form>
</section>
)
}
export default AddPostForm

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import { useSelector } from "react-redux";
import { selectAllUsers } from "../users/usersSlice";
const PostAuthor = ({ userId }) => {
const users = useSelector(selectAllUsers)
const author = users.find(user => user.id === userId);
return <span>by {author ? author.name : 'Unknown author'}</span>
}
export default PostAuthor

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import { useSelector } from "react-redux";
import { selectAllPosts } from "./postsSlice";
import PostAuthor from "./PostAuthor";
import TimeAgo from "./TimeAgo";
import ReactionButtons from "./ReactionButtons";
const PostsList = () => {
const posts = useSelector(selectAllPosts)
const orderedPosts = posts.slice().sort((a, b) => b.date.localeCompare(a.date))
const renderedPosts = orderedPosts.map(post => (
<article key={post.id}>
<h3>{post.title}</h3>
<p>{post.content.substring(0, 100)}</p>
<p className="postCredit">
<PostAuthor userId={post.userId} />
<TimeAgo timestamp={post.date} />
</p>
<ReactionButtons post={post} />
</article>
))
return (
<section>
<h2>Posts</h2>
{renderedPosts}
</section>
)
}
export default PostsList

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import { useDispatch } from "react-redux";
import { reactionAdded } from "./postsSlice";
const reactionEmoji = {
thumbsUp: '👍',
wow: '😮',
heart: '❤️',
rocket: '🚀',
coffee: '☕'
}
const ReactionButtons = ({ post }) => {
const dispatch = useDispatch()
const reactionButtons = Object.entries(reactionEmoji).map(([name, emoji]) => {
return (
<button
key={name}
type="button"
className="reactionButton"
onClick={() =>
dispatch(reactionAdded({ postId: post.id, reaction: name }))
}
>
{emoji} {post.reactions[name]}
</button>
)
})
return <div>{reactionButtons}</div>
}
export default ReactionButtons

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import { parseISO, formatDistanceToNow } from 'date-fns';
const TimeAgo = ({ timestamp }) => {
let timeAgo = ''
if (timestamp) {
const date = parseISO(timestamp)
const timePeriod = formatDistanceToNow(date)
timeAgo = `${timePeriod} ago`
}
return (
<span title={timestamp}>
&nbsp; <i>{timeAgo}</i>
</span>
)
}
export default TimeAgo

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import { createSlice, nanoid } from "@reduxjs/toolkit";
import { sub } from 'date-fns';
const initialState = [
{
id: '1',
title: 'Learning Redux Toolkit',
content: "I've heard good things.",
date: sub(new Date(), { minutes: 10 }).toISOString(),
reactions: {
thumbsUp: 0,
wow: 0,
heart: 0,
rocket: 0,
coffee: 0
}
},
{
id: '2',
title: 'Slices...',
content: "The more I say slice, the more I want pizza.",
date: sub(new Date(), { minutes: 5 }).toISOString(),
reactions: {
thumbsUp: 0,
wow: 0,
heart: 0,
rocket: 0,
coffee: 0
}
}
]
const postsSlice = createSlice({
name: 'posts',
initialState,
reducers: {
postAdded: {
reducer(state, action) {
state.push(action.payload)
},
prepare(title, content, userId) {
return {
payload: {
id: nanoid(),
title,
content,
date: new Date().toISOString(),
userId,
reactions: {
thumbsUp: 0,
wow: 0,
heart: 0,
rocket: 0,
coffee: 0
}
}
}
}
},
reactionAdded(state, action) {
const { postId, reaction } = action.payload
const existingPost = state.find(post => post.id === postId)
if (existingPost) {
existingPost.reactions[reaction]++
}
}
}
})
export const selectAllPosts = (state) => state.posts;
export const { postAdded, reactionAdded } = postsSlice.actions
export default postsSlice.reducer

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import { createSlice } from "@reduxjs/toolkit";
const initialState = [
{ id: '0', name: 'Dude Lebowski' },
{ id: '1', name: 'Neil Young' },
{ id: '2', name: 'Dave Gray' }
]
const usersSlice = createSlice({
name: 'users',
initialState,
reducers: {}
})
export const selectAllUsers = (state) => state.users;
export default usersSlice.reducer

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* {
margin: 0;
padding: 0;
box-sizing: border-box;
}
html {
font-family: Cambria, Cochin, Georgia, Times, "Times New Roman", serif;
background: #333;
color: whitesmoke;
}
body {
min-height: 100vh;
font-size: 1.5rem;
padding: 0 10% 10%;
}
input,
textarea,
button,
select {
font: inherit;
margin-bottom: 1em;
}
main {
max-width: 500px;
margin: auto;
}
section {
margin-top: 1em;
}
article {
margin: 0.5em 0.5em 0.5em 0;
border: 1px solid whitesmoke;
border-radius: 10px;
padding: 1em;
}
h1 {
font-size: 3.5rem;
}
p {
font-family: Arial, Helvetica, sans-serif;
line-height: 1.4;
font-size: 1.2rem;
margin: 0.5em 0;
}
form {
display: flex;
flex-direction: column;
}
.postCredit {
font-size: 1rem;
}
.reactionButton {
margin: 0 0.25em 0 0;
background: transparent;
border: none;
color: whitesmoke;
font-size: 1rem;
}

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import React from 'react';
import ReactDOM from 'react-dom';
import './index.css';
import App from './App';
import { store } from './app/store';
import { Provider } from 'react-redux';
ReactDOM.render(
<React.StrictMode>
<Provider store={store}>
<App />
</Provider>
</React.StrictMode>,
document.getElementById('root')
);

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# See https://help.github.com/articles/ignoring-files/ for more about ignoring files.
# dependencies
/node_modules
/.pnp
.pnp.js
# testing
/coverage
# production
/build
# misc
.DS_Store
.env.local
.env.development.local
.env.test.local
.env.production.local
npm-debug.log*
yarn-debug.log*
yarn-error.log*

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{
"name": "02_lesson",
"version": "0.1.0",
"private": true,
"dependencies": {
"@reduxjs/toolkit": "^1.8.0",
"react": "^17.0.2",
"react-dom": "^17.0.2",
"react-redux": "^7.2.6",
"react-scripts": "5.0.0"
},
"scripts": {
"start": "react-scripts start",
"build": "react-scripts build",
"eject": "react-scripts eject"
},
"eslintConfig": {
"extends": [
"react-app",
"react-app/jest"
]
},
"browserslist": {
"production": [
">0.2%",
"not dead",
"not op_mini all"
],
"development": [
"last 1 chrome version",
"last 1 firefox version",
"last 1 safari version"
]
}
}

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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8" />
<link rel="icon" href="%PUBLIC_URL%/favicon.ico" />
<meta name="viewport" content="width=device-width, initial-scale=1" />
<meta name="theme-color" content="#000000" />
<meta
name="description"
content="Web site created using create-react-app"
/>
<link rel="apple-touch-icon" href="%PUBLIC_URL%/logo192.png" />
<!--
manifest.json provides metadata used when your web app is installed on a
user's mobile device or desktop. See https://developers.google.com/web/fundamentals/web-app-manifest/
-->
<link rel="manifest" href="%PUBLIC_URL%/manifest.json" />
<!--
Notice the use of %PUBLIC_URL% in the tags above.
It will be replaced with the URL of the `public` folder during the build.
Only files inside the `public` folder can be referenced from the HTML.
Unlike "/favicon.ico" or "favicon.ico", "%PUBLIC_URL%/favicon.ico" will
work correctly both with client-side routing and a non-root public URL.
Learn how to configure a non-root public URL by running `npm run build`.
-->
<title>React App</title>
</head>
<body>
<noscript>You need to enable JavaScript to run this app.</noscript>
<div id="root"></div>
<!--
This HTML file is a template.
If you open it directly in the browser, you will see an empty page.
You can add webfonts, meta tags, or analytics to this file.
The build step will place the bundled scripts into the <body> tag.
To begin the development, run `npm start` or `yarn start`.
To create a production bundle, use `npm run build` or `yarn build`.
-->
</body>
</html>

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{
"short_name": "React App",
"name": "Create React App Sample",
"icons": [
{
"src": "favicon.ico",
"sizes": "64x64 32x32 24x24 16x16",
"type": "image/x-icon"
},
{
"src": "logo192.png",
"type": "image/png",
"sizes": "192x192"
},
{
"src": "logo512.png",
"type": "image/png",
"sizes": "512x512"
}
],
"start_url": ".",
"display": "standalone",
"theme_color": "#000000",
"background_color": "#ffffff"
}

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# https://www.robotstxt.org/robotstxt.html
User-agent: *
Disallow:

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function App() {
return (
<main className="App">
</main>
);
}
export default App;

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import { configureStore } from "@reduxjs/toolkit";
export const store = configureStore({
reducer: {
}
})

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* {
margin: 0;
padding: 0;
box-sizing: border-box;
}
html {
font-family: Cambria, Cochin, Georgia, Times, "Times New Roman", serif;
background: #333;
color: whitesmoke;
}
body {
min-height: 100vh;
font-size: 1.5rem;
padding: 0 10% 10%;
}
input,
textarea,
button,
select {
font: inherit;
margin-bottom: 1em;
}
main {
max-width: 500px;
margin: auto;
}
section {
margin-top: 1em;
}
article {
margin: 0.5em 0.5em 0.5em 0;
border: 1px solid whitesmoke;
border-radius: 10px;
padding: 1em;
}
h1 {
font-size: 3.5rem;
}
p {
font-family: Arial, Helvetica, sans-serif;
line-height: 1.4;
font-size: 1.2rem;
margin: 0.5em 0;
}
form {
display: flex;
flex-direction: column;
}
.postCredit {
font-size: 1rem;
}
.reactionButton {
margin: 0 0.25em 0 0;
background: transparent;
border: none;
color: whitesmoke;
font-size: 1rem;
}

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import React from 'react';
import ReactDOM from 'react-dom';
import './index.css';
import App from './App';
import { store } from './app/store';
import { Provider } from 'react-redux';
ReactDOM.render(
<React.StrictMode>
<Provider store={store}>
<App />
</Provider>
</React.StrictMode>,
document.getElementById('root')
);

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@ -37,9 +37,11 @@
--- ---
### 📚 References ### 📚 Redux References
- 🔗 [Official Site for Redux Toolkit](https://redux-toolkit.js.org/) - 🔗 [Official Site for Redux Toolkit](https://redux-toolkit.js.org/)
- 🔗 [Redux Devtools](https://github.com/reduxjs/redux-devtools)
- 🔗 [Immer.js](https://immerjs.github.io/immer/)
### ⚙ VS Code Extensions I Use: ### ⚙ VS Code Extensions I Use:
@ -53,6 +55,8 @@
### 💻 Source Code ### 💻 Source Code
- 🔗 [Chapter 1]() - 🔗 [Chapter 1](https://github.com/gitdagray/react_redux_toolkit/tree/main/01_lesson)
- 🔗 [Chapter 2 Starter Code](https://github.com/gitdagray/react_redux_toolkit/tree/main/02_lesson_starter)
- 🔗 [Chapter 2 Completed Code](https://github.com/gitdagray/react_redux_toolkit/tree/main/02_lesson)