├── .gitignore ├── README.md ├── package.json ├── public ├── favicon.ico ├── index.html └── manifest.json ├── src ├── App.css ├── App.js ├── App.test.js ├── components │ ├── SignUpForm.css │ ├── SignUpForm.js │ ├── const.js │ ├── getValidationSchema-spected.js │ ├── getValidationSchema-yup.js │ ├── validate-spected.js │ └── validate-yup.js ├── index.css ├── index.js ├── logo.svg └── registerServiceWorker.js └── yarn.lock /.gitignore: -------------------------------------------------------------------------------- 1 | # See https://help.github.com/ignore-files/ for more about ignoring files. 2 | 3 | # dependencies 4 | /node_modules 5 | 6 | # testing 7 | /coverage 8 | 9 | # production 10 | /build 11 | 12 | # misc 13 | .DS_Store 14 | .env.local 15 | .env.development.local 16 | .env.test.local 17 | .env.production.local 18 | 19 | npm-debug.log* 20 | yarn-debug.log* 21 | yarn-error.log* 22 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | Example of simple React form validation with Formik and Yup. 2 | 3 | # How to run the example? 4 | 5 | Install dependencies: 6 | ``` 7 | yarn 8 | ``` 9 | 10 | Start the local dev server on http://localhost:3000: 11 | ``` 12 | yarn start 13 | ``` -------------------------------------------------------------------------------- /package.json: -------------------------------------------------------------------------------- 1 | { 2 | "name": "react-form-validation", 3 | "version": "0.1.0", 4 | "private": true, 5 | "dependencies": { 6 | "formik": "^0.11.11", 7 | "react": "^16.2.0", 8 | "react-dom": "^16.2.0", 9 | "spected": "^0.7.0", 10 | "yup": "^0.24.1" 11 | }, 12 | "devDependencies": { 13 | "react-scripts": "1.1.1" 14 | }, 15 | "scripts": { 16 | "start": "react-scripts start", 17 | "build": "react-scripts build", 18 | "test": "react-scripts test --env=jsdom", 19 | "eject": "react-scripts eject" 20 | } 21 | } 22 | -------------------------------------------------------------------------------- /public/favicon.ico: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/jakubkoci/react-form-validation/d36df8ea68b3a03f5ac83b90ae9cdeab52a8ccb9/public/favicon.ico -------------------------------------------------------------------------------- /public/index.html: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 11 | 12 | 13 | 22 | React App 23 | 24 | 25 | 28 |

29 | 39 | 40 | 41 | -------------------------------------------------------------------------------- /public/manifest.json: -------------------------------------------------------------------------------- 1 | { 2 | "short_name": "React App", 3 | "name": "Create React App Sample", 4 | "icons": [ 5 | { 6 | "src": "favicon.ico", 7 | "sizes": "64x64 32x32 24x24 16x16", 8 | "type": "image/x-icon" 9 | } 10 | ], 11 | "start_url": "./index.html", 12 | "display": "standalone", 13 | "theme_color": "#000000", 14 | "background_color": "#ffffff" 15 | } 16 | -------------------------------------------------------------------------------- /src/App.css: -------------------------------------------------------------------------------- 1 | .App { 2 | text-align: center; 3 | } 4 | 5 | .App-logo { 6 | animation: App-logo-spin infinite 20s linear; 7 | height: 80px; 8 | } 9 | 10 | .App-header { 11 | background-color: #222; 12 | height: 150px; 13 | padding: 20px; 14 | color: white; 15 | } 16 | 17 | .App-title { 18 | font-size: 1.5em; 19 | } 20 | 21 | .App-intro { 22 | font-size: large; 23 | } 24 | 25 | @keyframes App-logo-spin { 26 | from { transform: rotate(0deg); } 27 | to { transform: rotate(360deg); } 28 | } 29 | -------------------------------------------------------------------------------- /src/App.js: -------------------------------------------------------------------------------- 1 | import React, { Component } from 'react'; 2 | import SignUpForm from './components/SignUpForm' 3 | import logo from './logo.svg'; 4 | import './App.css'; 5 | 6 | class App extends Component { 7 | render() { 8 | return ( 9 |

10 |

11 |

12 |

Welcome to React

13 |

14 | 15 |

16 | ); 17 | } 18 | } 19 | 20 | export default App; 21 | -------------------------------------------------------------------------------- /src/App.test.js: -------------------------------------------------------------------------------- 1 | import React from 'react'; 2 | import ReactDOM from 'react-dom'; 3 | import App from './App'; 4 | 5 | it('renders without crashing', () => { 6 | const div = document.createElement('div'); 7 | ReactDOM.render(, div); 8 | ReactDOM.unmountComponentAtNode(div); 9 | }); 10 | -------------------------------------------------------------------------------- /src/components/SignUpForm.css: -------------------------------------------------------------------------------- 1 | .form { 2 | display: flex; 3 | width: 20em; 4 | margin: 0 auto; 5 | flex-direction: column; 6 | align-items: flex-end; 7 | } 8 | 9 | .form-field { 10 | margin: 1em; 11 | } 12 | 13 | .form-field-error { 14 | margin-right: 1em; 15 | font-size: 0.8em; 16 | color: red; 17 | } 18 | 19 | label span { 20 | margin-right: 0.5em; 21 | } 22 | 23 | button { 24 | align-self: center; 25 | margin: 1em; 26 | } -------------------------------------------------------------------------------- /src/components/SignUpForm.js: -------------------------------------------------------------------------------- 1 | import React from 'react' 2 | import { Formik } from 'formik' 3 | import validate from './validate-spected' 4 | import getValidationSchema from './getValidationSchema-spected' 5 | import './SignUpForm.css' 6 | 7 | const initialValues = { 8 | email: '', 9 | password: '', 10 | passwordConfirmation: '', 11 | consent: false, 12 | } 13 | 14 | export default function SignUpFormContainer() { 15 | return ( 16 | 22 | ) 23 | } 24 | 25 | function SignUpForm(props) { 26 | const { isSubmitting, errors, handleChange, handleSubmit } = props 27 | 28 | return ( 29 |

30 | 31 | E-mail: 32 | 33 | 34 |

{errors.email}

35 | 36 | 37 | Password: 38 | 39 | 40 |

{errors.password}

41 | 42 | 43 | Confirm password: 44 | 45 | 46 |

{errors.passwordConfirmation}

47 | 48 | 49 | Consent: 50 | 51 | 52 |

{errors.consent}

53 | 54 | 55 |

56 | ) 57 | } 58 | 59 | function onSubmit(values, { setSubmitting, setErrors }) { 60 | setTimeout(() => { 61 | console.log('User has been sucessfully saved!', values) 62 | setSubmitting(false) 63 | }, 2000) 64 | } -------------------------------------------------------------------------------- /src/components/const.js: -------------------------------------------------------------------------------- 1 | export const MIN_PASSWORD_LENGTH = 6 -------------------------------------------------------------------------------- /src/components/getValidationSchema-spected.js: -------------------------------------------------------------------------------- 1 | import { MIN_PASSWORD_LENGTH } from './const' 2 | 3 | export default function getSpectedValidationSchema(values) { 4 | return { 5 | email: [ 6 | [value => !isEmpty(value), 'E-mail is required!'], 7 | [value => isEmail(value), 'E-mail is not valid!'], 8 | ], 9 | password: [ 10 | [value => !isEmpty(value), 'Password is required!'], 11 | [ 12 | value => value.length >= MIN_PASSWORD_LENGTH, 13 | `Password has to be longer than ${MIN_PASSWORD_LENGTH} characters!` 14 | ], 15 | ], 16 | passwordConfirmation: [ 17 | [value => !isEmpty(value), 'Password confirmation is required!'], 18 | [value => value === values.password, 'Passwords are not the same!'], 19 | ], 20 | consent: [ 21 | [value => value === true, 'You have to agree with our Terms and Conditions!'], 22 | ] 23 | } 24 | } 25 | 26 | function isEmpty(value) { 27 | return !value || !value.trim() 28 | } 29 | 30 | function isEmail(value) { 31 | const EMAIL_REGEXP = /([\w\.\-_]+)?\w+@[\w-_]+(\.\w+){1,}/ 32 | return EMAIL_REGEXP.test(value) 33 | } -------------------------------------------------------------------------------- /src/components/getValidationSchema-yup.js: -------------------------------------------------------------------------------- 1 | import Yup from 'yup' 2 | import { MIN_PASSWORD_LENGTH } from './const' 3 | 4 | export default function getYupValidationSchema(values) { 5 | return Yup.object().shape({ 6 | email: Yup.string() 7 | .email('E-mail is not valid!') 8 | .required('E-mail is required!'), 9 | password: Yup.string() 10 | .min(MIN_PASSWORD_LENGTH, `Password has to be longer than ${MIN_PASSWORD_LENGTH} characters!`) 11 | .required('Password is required!'), 12 | passwordConfirmation: Yup.string() 13 | .oneOf([values.password], 'Passwords are not the same!') 14 | .required('Password confirmation is required!'), 15 | consent: Yup.bool() 16 | .test('consent', 'You have to agree with our Terms and Conditions!', value => value === true) 17 | .required('You have to agree with our Terms and Conditions!'), 18 | }) 19 | } -------------------------------------------------------------------------------- /src/components/validate-spected.js: -------------------------------------------------------------------------------- 1 | import spected from 'spected' 2 | 3 | export default function validate(getValidationSchema) { 4 | return (values) => { 5 | const spec = getValidationSchema(values) 6 | const validationResult = spected(spec, values) 7 | return getErrorsFromValidationResult(validationResult) 8 | } 9 | } 10 | 11 | function getErrorsFromValidationResult(validationResult) { 12 | const FIRST_ERROR = 0 13 | return Object.keys(validationResult).reduce((errors, field) => { 14 | return validationResult[field] !== true 15 | ? { ...errors, [field]: validationResult[field][FIRST_ERROR] } 16 | : errors 17 | }, {}) 18 | } -------------------------------------------------------------------------------- /src/components/validate-yup.js: -------------------------------------------------------------------------------- 1 | export default function validate(getValidationSchema) { 2 | return (values) => { 3 | const validationSchema = getValidationSchema(values) 4 | try { 5 | validationSchema.validateSync(values, { abortEarly: false }) 6 | return {} 7 | } catch (error) { 8 | return getErrorsFromValidationError(error) 9 | } 10 | } 11 | } 12 | 13 | function getErrorsFromValidationError(validationError) { 14 | const FIRST_ERROR = 0 15 | return validationError.inner.reduce((errors, error) => { 16 | return { 17 | ...errors, 18 | [error.path]: error.errors[FIRST_ERROR], 19 | } 20 | }, {}) 21 | } -------------------------------------------------------------------------------- /src/index.css: -------------------------------------------------------------------------------- 1 | body { 2 | margin: 0; 3 | padding: 0; 4 | font-family: sans-serif; 5 | } 6 | -------------------------------------------------------------------------------- /src/index.js: -------------------------------------------------------------------------------- 1 | import React from 'react'; 2 | import ReactDOM from 'react-dom'; 3 | import './index.css'; 4 | import App from './App'; 5 | import registerServiceWorker from './registerServiceWorker'; 6 | 7 | ReactDOM.render(, document.getElementById('root')); 8 | registerServiceWorker(); 9 | -------------------------------------------------------------------------------- /src/logo.svg: -------------------------------------------------------------------------------- 1 | 8 | -------------------------------------------------------------------------------- /src/registerServiceWorker.js: -------------------------------------------------------------------------------- 1 | // In production, we register a service worker to serve assets from local cache. 2 | 3 | // This lets the app load faster on subsequent visits in production, and gives 4 | // it offline capabilities. However, it also means that developers (and users) 5 | // will only see deployed updates on the "N+1" visit to a page, since previously 6 | // cached resources are updated in the background. 7 | 8 | // To learn more about the benefits of this model, read https://goo.gl/KwvDNy. 9 | // This link also includes instructions on opting out of this behavior. 10 | 11 | const isLocalhost = Boolean( 12 | window.location.hostname === 'localhost' || 13 | // [::1] is the IPv6 localhost address. 14 | window.location.hostname === '[::1]' || 15 | // 127.0.0.1/8 is considered localhost for IPv4. 16 | window.location.hostname.match( 17 | /^127(?:\.(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)){3}$/ 18 | ) 19 | ); 20 | 21 | export default function register() { 22 | if (process.env.NODE_ENV === 'production' && 'serviceWorker' in navigator) { 23 | // The URL constructor is available in all browsers that support SW. 24 | const publicUrl = new URL(process.env.PUBLIC_URL, window.location); 25 | if (publicUrl.origin !== window.location.origin) { 26 | // Our service worker won't work if PUBLIC_URL is on a different origin 27 | // from what our page is served on. This might happen if a CDN is used to 28 | // serve assets; see https://github.com/facebookincubator/create-react-app/issues/2374 29 | return; 30 | } 31 | 32 | window.addEventListener('load', () => { 33 | const swUrl = `${process.env.PUBLIC_URL}/service-worker.js`; 34 | 35 | if (isLocalhost) { 36 | // This is running on localhost. Lets check if a service worker still exists or not. 37 | checkValidServiceWorker(swUrl); 38 | 39 | // Add some additional logging to localhost, pointing developers to the 40 | // service worker/PWA documentation. 41 | navigator.serviceWorker.ready.then(() => { 42 | console.log( 43 | 'This web app is being served cache-first by a service ' + 44 | 'worker. To learn more, visit https://goo.gl/SC7cgQ' 45 | ); 46 | }); 47 | } else { 48 | // Is not local host. Just register service worker 49 | registerValidSW(swUrl); 50 | } 51 | }); 52 | } 53 | } 54 | 55 | function registerValidSW(swUrl) { 56 | navigator.serviceWorker 57 | .register(swUrl) 58 | .then(registration => { 59 | registration.onupdatefound = () => { 60 | const installingWorker = registration.installing; 61 | installingWorker.onstatechange = () => { 62 | if (installingWorker.state === 'installed') { 63 | if (navigator.serviceWorker.controller) { 64 | // At this point, the old content will have been purged and 65 | // the fresh content will have been added to the cache. 66 | // It's the perfect time to display a "New content is 67 | // available; please refresh." message in your web app. 68 | console.log('New content is available; please refresh.'); 69 | } else { 70 | // At this point, everything has been precached. 71 | // It's the perfect time to display a 72 | // "Content is cached for offline use." message. 73 | console.log('Content is cached for offline use.'); 74 | } 75 | } 76 | }; 77 | }; 78 | }) 79 | .catch(error => { 80 | console.error('Error during service worker registration:', error); 81 | }); 82 | } 83 | 84 | function checkValidServiceWorker(swUrl) { 85 | // Check if the service worker can be found. If it can't reload the page. 86 | fetch(swUrl) 87 | .then(response => { 88 | // Ensure service worker exists, and that we really are getting a JS file. 89 | if ( 90 | response.status === 404 || 91 | response.headers.get('content-type').indexOf('javascript') === -1 92 | ) { 93 | // No service worker found. Probably a different app. Reload the page. 94 | navigator.serviceWorker.ready.then(registration => { 95 | registration.unregister().then(() => { 96 | window.location.reload(); 97 | }); 98 | }); 99 | } else { 100 | // Service worker found. Proceed as normal. 101 | registerValidSW(swUrl); 102 | } 103 | }) 104 | .catch(() => { 105 | console.log( 106 | 'No internet connection found. App is running in offline mode.' 107 | ); 108 | }); 109 | } 110 | 111 | export function unregister() { 112 | if ('serviceWorker' in navigator) { 113 | navigator.serviceWorker.ready.then(registration => { 114 | registration.unregister(); 115 | }); 116 | } 117 | } 118 | --------------------------------------------------------------------------------