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FORM validation #TheLaravelKid BEGINS LARACON.EU The Art of

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So, validtaion…

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So, validation… It's required, right?

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I'm Caneco Full-Stack Developer ! MEDICARE caneco.xyz

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I'm Caneco .PHP .JS .HTML .CSS .JSON .SQL .GIT .SH .SVG .PNG .PSD .AI

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I'm Caneco @enunomaduro's "Schoger"

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I'm Caneco from Lisbon, Portugal Netherlands here Spain here Portugal here

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WARNING ALL THE FOLLOWING SLIDES CONTAIN VALUABLE INFORMATION FOR YOUR DAILY LIFE… ALL GIFS ARE FROM THE BADASS TV SHOW COBRA KAI THAT YOU ALL MUST WATCH… AND ALL THE SLIDES, AND CONTENT ARE 100% MADE ON KEYNOTE ̈

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LET'S BEGIN

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Why validate?

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On a regular day in 2019

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500 million tweets source: weforum.org

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294 billion emails source: weforum.org

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5 billion searches source: weforum.org

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~300 new posts on laracasts.com/discuss source: the Jeffrey Way

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~64.5K downloads of Spatie packages source: spatie.be/open-source

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It's a LOT of data

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It's a LOT of data

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through APIs [GET] skyscanner-example.dev/v1/flights [PATCH] zomato-example.dev/place/123/book [GET] openweather-example.dev/fatima [GET] musixmatch-example.dev/top-10 [GET] nasa-example.dev/v9999/planet-x [GET] numbers-example.dev/random-number [GET] urbandictionary-example.dev/tldr [GET] tempmail-example.dev/fresh [GET] moviedatabase-example.dev/v1/top/horror [GET] ip-example.dev/127.0.0.1

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or in forms

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Validation… do we really need it?

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Can't we trust our users?

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MOST DEF

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It's purely just for fun

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Validation 101

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SIGN IN Sign in Email address Password SENDING

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SIGN IN Sign in These credentials do not match our records. Email address Password

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SIGN IN Sign in Email address Password Please fill in this field. Please fill in this field.

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Sign in Email address example Password ●●●●●● SIGN IN SENDING

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SIGN IN Sign in These credentials do not match our records. Email address example Password

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SIGN IN Sign in Email address example Password ●●●●●● Please include an '@' in the email address.

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SIGN IN Sign in Email address example@ Password ●●●●●● Please enter a part following '@'.

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SIGN IN Sign in Email address example@ Password ●●●●●● SENDING email

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SIGN IN Sign in These credentials do not match our records. Email address example@email Password ●●●●●●

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Thank you

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Not exactly…

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HTML5 validation depends on the browser

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And it's not that simple nor pretty

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1 2 3 4 5 6 ▶ 20 function "'invoke(Request $request) { $request"(validate([ 'username' ") 'required|email', 'password' ") 'required|min:6|strong_password', ]); ""$ }

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JavaScript

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1 ▶ 42 ""$ "*form>

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1 ▶ 42 ""$ "*form>

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jQueryValidate.js

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1 2 3 4 5 6 7 8 9 10 var rules = { username: { required: true, email: true, }, password: { required: true, minlength: 6, }, }

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1 2 3 4 5 6 7 8 9 10 11 12 var rules = { username: { required: true, email: true, }, password: { required: true, minlength: 6, }, } $("#login").validate(rules)

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validate.js

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1 2 3 4 let input = { username: document.getElementById('username').value(), password: document.getElementById('password').value(), }

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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 let input = { username: document.getElementById('username').value(), password: document.getElementById('password').value(), } let rules = { username: { presence: true, email: true }, password: { presence: true, length: { minimum: 6 }, }, }

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1 ▶ 4 7 6 ▶ 15 16 17 18 19 let input = { !!" } let rules = { ""$ } if (validate(input, rules)) { "+ }

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VeeValidate

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> npm install vee-validate

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1 2 import Vue from 'vue' import VeeValidate from 'vee-validate'

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1 2 3 4 import Vue from 'vue' import VeeValidate from 'vee-validate' Vue.use(VeeValidate)

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1 2 3 4 import Vue from 'vue' import VeeValidate from 'vee-validate' Vue.use(VeeValidate)

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1 2 3 4 5 6 import Vue from 'vue' import VeeValidate from 'vee-validate' Vue.use(VeeValidate, { useConstraintAttrs: false, })

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1 2 3 4 5 6 7 8 9 10 11 alpha alpha_dash alpha_num alpha_spaces before between confirmed credit_card date_between date_format decimal digits dimensions email image included integer ip is is_not length max_value mimes min max min_value excluded numeric regex required required_if size url

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Add custom rules

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1 import { Validator } from 'vee-validate'

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1 2 3 4 5 6 7 import { Validator } from 'vee-validate' import { STRONG_PASS_REGEX } from '@/helpers/regex_rules' const strongPassword = { getMessage: field ") `${field} is weak.`, validate: value ") STRONG_PASS_REGEX.test(value) }

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1 2 3 4 5 6 7 import { Validator } from 'vee-validate' import { STRONG_PASS_REGEX } from '@/helpers/regex_rules' const strongPassword = { getMessage: field ") `${field} is weak.`, validate: value ") STRONG_PASS_REGEX.test(value) }

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1 2 3 4 5 6 7 import { Validator } from 'vee-validate' import { STRONG_PASS_REGEX } from '@/helpers/regex_rules' const strongPassword = { getMessage: field ") `${field} is weak.`, validate: value ") STRONG_PASS_REGEX.test(value) }

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1 2 3 4 5 6 7 8 9 import { Validator } from 'vee-validate' import { STRONG_PASS_REGEX } from '@/helpers/regex-rules' const strongPassword = { getMessage: field ") `${field} is weak.`, validate: value ") STRONG_PASS_REGEX.test(value) } Validator.extend('strong_password', strongPassword)

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Using ErrorBag

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1 2 3 4 5 6 7 8 9 10 Email address "*label>

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1 2 3 4 5 6 7 8 9 10 11 12 13 14 Email address "*label>

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1 ▶ 6 7 ▶ 14 15 16 17 ""$ "*label> The username must be a valid email. "*p>

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1 ▶ 6 7 ▶ 14 15 16 17 ""$ "*label> {{ errors.first('username') }} "*p>

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SIGN IN Sign in The username must be a valid email. Email address example Password ●●●●●● Email address example

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1 2 3 4 {{ errors.any() }} {{ errors.all() }} {{ errors.count() }} {{ errors.clear() }}

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WAIT?! ALL OF THAT?

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Why validate on the client side?

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Assure the data is good

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Quick feedback

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Real-time feedback

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Reduce server validation

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Now in the server side

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No content

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Why validate on the server side?

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Reassure the data is good

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Server-side checking

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Domain rules

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1 2 3 4 5 6 ▶ 20 function "'invoke(Request $request) { $request"(validate([ 'username' ") 'required|email', 'password' ") 'required|min:6|strong_password', ]); ""$ }

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1 2 3 4 5 6 7 8 9 HTTP/1.1 422 Unprocessable Entity Content-Type: application/json; charset=utf-8 ""$ "data": { "errors": { "email": [ "The email must be a valid email address." ], ""$

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1 2 3 4 5 6 7 8 9 HTTP/1.1 422 Unprocessable Entity Content-Type: application/json; charset=utf-8 ""$ "data": { "errors": { "email": [ "The email must be a valid email address." ], ""$

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1 2 3 4 5 6 7 8 9 10 11 12 13 HTTP/1.1 422 Unprocessable Entity Content-Type: application/json; charset=utf-8 ""$ "data": { "errors": { "email": [ "The email must be a valid email address." ], "password": [ "The password must be at least 6 characters", "The password must have 2 uppercase letters 1 special letter 2 digi ] ""$

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1 2 ▶ 8 ▶ 12 13 if (response.data.errors.email) { if (/required/i.test(response.data.errors)) { ""$ } else if (/invalid/i.test(response.data.errors)) { ""$ } }

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How to simplify the conversation?

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> art make:request SubmitRequest

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1 2 3 4 5 6 7 public function rules() { return [ 'username' ") 'required|email', 'password' ") 'required|min:6|strong_password', ]; }

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1 2 3 4 5 6 7 8 9 public function messages() { return [ 'required' ") ':attribute.required', 'email' ") 'email.invalid', 'password.min' ") 'password:min', 'strong_password' ") 'password_not_strong', ]; }

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1 2 3 4 5 6 7 8 9 public function failedValidation(Validator $validator) { throw (new HttpResponseException( response()"(json([ 'message' ") 'The given data was invalid.', 'errors' ") $validator"(errors()"(all(), ], 422) )); }

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1 2 3 4 5 6 7 8 9 public function failedValidation(Validator $validator) { throw (new HttpResponseException( response()"(json([ 'message' ") 'The given data was invalid.', 'errors' ") $validator"(errors()"(all(), ], 418) )); }

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1 2 3 4 5 6 7 8 9 HTTP/1.1 418 I'm a teapot Content-Type: application/json; charset=utf-8 ""$ { "message": "The given data was invalid.", "errors": [ "email.invalid" ] }

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No content

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Validation examples

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email fields

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Simple form Email address SUBMIT The email field is required.

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Simple form Email address SUBMIT The email must be a valid email address. example

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" prevent the errors

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Simple form Email address SUBMIT Did you mean [email protected]? [email protected]

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Simple form Email address SUBMIT [email protected] [email protected] [email protected] [email protected] [email protected]

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1 2 3 4 5 6 7 8 9 function "'invoke(Request $request) { $request"(validate([ 'email' ") [ 'required', 'email', ] ]); }

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1 2 3 4 5 6 7 8 9 function "'invoke(Request $request) { $request"(validate([ 'email' ") [ 'required', 'email', "+ [email protected] ] ]); }

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Simple form Email address SUBMIT [email protected]

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1 2 3 4 5 6 7 8 9 function "'invoke(Request $request) { $request"(validate([ 'email' ") [ 'required', 'email', ] ]); }

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1 2 3 4 5 6 7 8 9 function "'invoke(Request $request) { $request"(validate([ 'email' ") [ 'required', 'email:rfc,dns', "+ new in Laravel 5.8.33 ] ]); }

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1 2 3 4 5 6 7 8 9 10 function "'invoke(Request $request) { $request"(validate([ 'email' ") [ 'required', 'email:rfc,dns', 'unique:users.email', ] ]); }

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1 2 3 4 5 6 7 8 9 10 function "'invoke(Request $request) { $request"(validate([ 'email' ") [ 'required', 'email:rfc,dns', "+ ", ATTENTION 'unique:users.email', "+ ", ATTENTION ] ]); }

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1 2 3 4 5 6 7 8 9 10 11 function "'invoke(Request $request) { $request"(validate([ 'email' ") [ 'bail', 'required', 'email:rfc,dns', 'unique:users.email', ] ]); }

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Remember SubmitRequest?

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1 2 3 4 5 6 7 8 HTTP/1.1 418 I'm a teapot Content-Type: application/json; charset=utf-8 ""$ "data": { "errors": [ "email.invalid", ] ""$

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1 2 3 4 5 6 7 this.$http.post('/submit’) .then(response ") { "+ }) .catch({ response } ") { "+ })

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1 ▶ 5 6 7 8 9 this.$http.post('/submit’) ""$ .catch({ response } ") { if (response.status ""- 418) { "+ } })

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1 ▶ 5 6 7 8 9 10 11 this.$http.post('/submit’) ""$ .catch({ response } ") { if (response.status ""- 418) { if (response.data.errors.includes('email.invalid')) { "+ } } })

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1 ▶ 5 6 7 8 9 10 11 12 13 14 15 this.$http.post('/submit’) ""$ .catch({ response } ") { if (response.status ""- 418) { let errors = response.data.errors if (response.data.errors.includes('email.invalid')) { this.$validator.errors.add({ field: 'email', msg: 'The email must be a valid email address.', }) } } })

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1 ▶ 5 6 7 8 9 10 11 12 13 14 15 16 this.$http.post('/submit’) ""$ .catch({ response } ") { if (response.status ""- 418) { let errors = response.data.errors if (errors.includes('email.invalid')) { this.$validator.errors.add({ field: 'email', msg: 'The email must be a valid email address.', }) this.$el.username.focus() } } })

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phone fields

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1 2 3 4 5 6 7 8 import { Validator } from 'vee-validate' const phone = { getMessage: field ") `The ${field} must be a valid phone number.`, validate: value ") { return /^[0-9]{9}$/.test(value) } }

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1 2 3 4 5 6 7 8 import { Validator } from 'vee-validate' const phone = { getMessage: field ") `The ${field} must be a valid phone number.`, validate: value ") { return /^2[0-9]{8}|9[1236][0-9]{7}$/.test(value) } }

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Simple form Mobile number SUBMIT The phone must be a valid phone number. 201000123

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" prevent the errors

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Simple form Mobile number SUBMIT 912367125637512123987

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Simple form Mobile number SUBMIT asdasdasd

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> npm install vee-mask

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1 2 import Vue from 'vue' import VeeMask from 'vee-mask'

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1 2 3 4 import Vue from 'vue' import VeeMask from 'vee-mask' Vue.use(VeeMask)

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Simple form Mobile number SUBMIT 213 123 123

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zip, iban, address, weight…

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They follow the same idea

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WAX ON, WAX OFF

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Extra tricks

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autofocus

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Sign up Full name Email address Phone CONTINUE |

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" attention to mobile

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Sign up Full name Email address Phone CONTINUE | Done Q W E R T Y U I O P space return 123 A S D F G H J K L ⌫ ⇧ Z X C V B N M

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1 2 3 4 5 6 7 8 Vue.directive('autofocus', { inserted: (el, binding) ") { if (! isMobile) { el.setAttribute('autofocus', 'autofocus') el.focus() "+ Justin Case } }, })

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input types

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SUBMIT The Form Email field | Done Q W E R T Y U I O P space return 123 A S D F G H J K L ⌫ ⇧ Z X C V B N M Done Q W E R T Y U I O P space return 123 A S D F G H J K L ⌫ ⇧ Z X C V B N M @ .

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The Form Phone field SUBMIT | Done ⌫ + ❋ # 2 1 3 5 4 6 8 7 9 0 ABC GHI JKL MNO DEF TUV PQRS WXYZ

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The Form Number field SUBMIT | Done 1 2 3 4 5 6 7 8 9 0 space return ABC ⌫ #+= . , ? ! ´ - / : ; ( ) $ & @ "

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inputmode

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66 20 76 Nope Chrome Firefox Edge Safari Desktop Mobile / Tablet 75 Nope 67 12.2-12.3 Android Chrome Android Firefox Android iOS Safari

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The Form Decimal field SUBMIT | Done ⌫ . 2 1 3 5 4 6 8 7 9 0 ABC GHI JKL MNO DEF TUV PQRS WXYZ

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placeholder

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REGISTER Sign up Your email Caneco

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Prevent the Dory Syndrome

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REGISTER Sign up Your email Caneco Your full name

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REGISTER Sign up Your full name Your email Caneco The full name must be a valid name. Caneco2

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REGISTER Sign up [email protected] Your full name Caneco Your email

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Now you're ready

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READY TO STRIKE

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But first

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VALIDATE FIRST VALIDATE BACK NO MERCY

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Thank you

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FORM validation #TheLaravelKid The Art of