Form Validator

Installation

It can be installed using npm. Install it using

npm install lumina-form-validator

Once installed, you can add index.js directly from node_modules/favjs folder.

<script src="node_modules/favjs/index.js"></script>

or

You can import the module using ES6

import { Validator } from 'lumina-form-validator'

Usage

import { Validator } from 'lumina-form-validator'

const validator = new Validator({
        name: '',
        age: '18',
        email: 'naruto',
        phone: '9848022338'
    })

validator.attr('name').label('Name').required()
validator.attr('age').label('Age').required().integer()
validator.attr('email').label('Email').required().email()
validator.attr('phone').label('Phone Number').extend((value) => {
    return typeof(value) === 'string'
})

if(validator.isSuccess()) {
    return 'Validation success'
} else {
    return validator.getErrors()
}

Example :

Errors will be returned as below from getErrors() method :

{
    email: 'Email is not a valid email format',
    name: 'Name is required',
    age: 'Age is not a valid integer'
}

Validator methods :

| Method | Description | | ------------------- | ----------------------------------------------------------------- | | attr() | Used to get attribute from the given object. | | name() | Set the proper user friendly name for the attribute field. | | required() | Check if the value is present | | integer() | Check if the value is proper integer | | string() | Check if the value is proper string | | minValue(size) | Check if the integer is below the given size. | | maxValue(size) | Check if the integer is above the given size. | | minLength(size) | Check if array or string contains minimum number of items. | | maxLength(size) | Check if array or sring exceeds maximum number of items. | | url() | Check if the value is a valid URL. | | file() | Check if the value is a valid File. | | maxSize(size) | Check if the file is within valid size limit. | | allowedTypes(types) | Check if the file type is allowed. | | email() | Check if the value is a valid email. | | password() | Check if the value is a valid password. | | pattern(format) | Check if the value is matching with the custom pattern given. | | equals(val) | Check if the value is equal to the given value. | | extend(function) | To extend validator to add your own validation. | | isSuccess() | Check if the validation is success of not. Returns boolean value. | | getErrors() | Get the errors as object if validation fails. |

Password format :

1. Atleast one uppercase letter.
2. Atleast one number.
3. Atleast one lowercase letter.
4. Atleast one special character.
5. Atleat eight characters length.

Utils

Lumina form validator provides util methods for each type of validation. You can just import them and use them instead of Validator.

Usage

import {  
    isRequired, 
    checkEmail,
} from "lumina-form-validator";

if(isRequired('Naruto')) {
    return 'Valid'
} else {
    return 'Invalid'
}

Methods

| Method | Description | | ---------------------------------- | ---------------------------------------------------- | | isRequired(value) | Check if the value exists and valid. | | checkMinValue(value, size) | Check if the integer value is less than the size. | | checkMaxValue(value, size) | Check if the integer value is greater than the size. | | checkMinLength(value, size) | Check if array or string is minimum length of size. | | checkMaxLength(value, size) | Check if array or string is maximum length of size. | | checkUrl(value) | Check if value is a valid URL. | | checkEmail(value) | Check if value is a valid email. | | checkPassword(value) | Check if value is a valid password. | | checkCustomPattern(value, pattern) | Check if value matches with the pattern. | | checkEqual(value1, value2) | Check if value1 and value2 are equal. | | checkInteger(value) | Check if value is a valid integer. | | checkString(value) | Check if value is a valid string. | | checkFile(file) | Check if value is a valid file. | | checkMaxFileSize(file, size) | Check if file size is within max size limit. | | checkFileTypes(file, types) | Check if file type is allowed or not. |

File Validation Example :

Using Validator :

const validator = new Validator({
	'firstFile' : firstFile,
	'secondFile' : secondFile
})

validator.attr('firstFile').label('First File').file().maxSize(2 * 1024 * 1024).allowedTypes(['image/*'])

validator.attr('secondFile').label('Second File').file().maxSize(1 * 1024 * 1024).allowedTypes(['image/jpeg'])

Using Methods :

checkFile(firstFile)
checkMaxFileSize(firstFile, 2 * 1024 * 1024)
checkFileTypes(firstFile, ['image/png', 'video/mp4'])

Note : Support for the Typescript has been added in the latest version, the project is now can be used along with Typescript.

Run the below command to build with typescript :

npm run build

Alright, happy coding :)