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jedi-validate

v1.5.6

Published

A lightweight form validation component

Downloads

9

Readme

Jedi Validate

npm version doc coverage Build Status Coverage Status Mutation testing badge Dependencies Known Vulnerabilities

Jedi Validate

Jedi Validate is a lightweight form validation component.

Installation and Usage

This is a JS class and you can create a new instance by passing in a DOM element and an options object.

// npm install jedi-validate


import JediValidate from 'jedi-validate';

const JediValidate = new JediValidate(document.querySelector('#form5'));

By default, the form will be sent via ajax with the parameters which were set in HTML.

Motivation

Because it provides a strict json format for interaction, you can send a form in many different ways:

  • serialized
  • as a JSON object
  • as FormData

But the server response always has one structure. It is easier to implement.

Build and Test

If you would like to build the source code, run tests, or contribute, then first fork or clone this repo onto your local machine. Ensure NodeJS and npm are installed. Check in a terminal with node -v and npm -v.

To install project dependencies first run,

npm install

Build

To build the source and watch for changes in the terminal run,

npm run build

Build and Serve

To bundle the source and serve it to localhost:4000 run,

npm run dev

This will open a webpack local server where you can navigate to the desired directory or resource. The test page is located in example/bootstrap.html

Running Tests

The tests are not yet complete and runtime errors will occur when attempting to run the tests in the console or through the test browser.

Options

There are three types of options:

  • Default component options
  • Form attributes such as action or method
  • Initialization options

Default Options

    {
        ajax: {
            url: null,
            enctype: 'application/x-www-form-urlencoded',
            sendType: 'serialize', // 'formData', 'json'
            method: 'GET'
        },
        rules: {},
        messages: {},
        containers: {
            parent: 'form-group',
            message: 'help-block',
            baseMessage: 'base-error'
        },
        states: {
            error: 'error',
            valid: 'valid',
            pristine: 'pristine',
            dirty: 'dirty'
        },
        callbacks: {
            success: function () {
            },
            error: function () {
            }
        },
        clean: true,
        redirect: true
    }

Ajax Options

Under the ajax option we define how to send the form. It can be null if we do not want the form to be sent, or it can be an object with the following options:

url

default: null Can be overridden by the action form attribute or init options.

enctype

default: 'application/x-www-form-urlencoded' Can be overridden by the enctype form attribute, init options, or sendType.

method

default: 'GET' Can be overridden by the method form attribute or init options.

Data Encoding Options

sendType

default: 'serialize'

You can encode and send the data in three different ways. Valid options are:

  • 'formData' - send form as FormData. 'Content-type' to 'multipart/form-data'
  • 'json' - send form as a JSON object. Set 'Content-type' to 'application/json; charset=utf-8'
  • 'serialize' - send form as a regular request. Set 'Content-type' to 'application/x-www-form-urlencoded'

Files can only be sent using 'formData' encoding.

serialize

    name=111&phone=222222222&email=wow%40wow.com

formData

-----------------------------678106150613000712676411464
Content-Disposition: form-data; name="name"

111
-----------------------------678106150613000712676411464
Content-Disposition: form-data; name="phone"

222222222
-----------------------------678106150613000712676411464
Content-Disposition: form-data; name="email"
...

json

    {"name":"111","phone":"222222222","email":"[email protected]","file":"index.html"}

Validation Rules

Rules used to validate input. Each form element will be matched by the 'name' attribute with a corresponding rule, if one exists. If no rule exists, then no validation will occur.

Basic Rules:

Rules are not defined by default, but they can be set via attributes, or classes in HTML, or in the init options.

  • required : boolean
  • regexp : RegExp
  • email : boolean
  • tel : boolean
  • url : boolean
  • filesize: number
  • extension: string

These attributes can be used

  • type - email, tel or url (regexp will be used for each type)
  • pattern - regexp with attribute value
  • required - check input for empty value

Example:

    <input id="name" type="text" name="name" required class="required">
    <input id="email" type="email" name="email" class="required">
  • type="email" or class="email" to validate as email
  • required or class="required" to validate as a required field

Custom Validation Rules

You can set your own rules using the addMethod function:

JediValidate.addMethod('methodName', function (value, options) {
    return true // true if valid
}, 'Error message');

Initialization Options Example

Add rules as part of your options object when initializing:

    const validator = new JediValidate(formWrapper, {
        rules: {
            name: {
                required: true
            },
            email: {
                email: true
            },
            phone: {
                regexp: /^([\+]+)*[0-9\x20\x28\x29\-]{5,20}$/
            },
            file: {
                filesize: 10000,
                extension: "html|css|txt"
            }
            file2: {
                filesize: [10000, "two-files-checkbox"], // check only if checkbox checked
                extension: ["html|css|txt", "two-files-checkbox"], // without recollect by default
                another: ['param', function(oldData) {
                   const newData = validator.collect('two-files-checkbox'); // manual data recollect for concrete field
                   return !!newData['two-files-checkbox'];
               }];
            }
        }
    });

You can recollect data from the entire form or just by input name. The method returns new data.

validator.collect(); // all form
validator.collect('two-files-checkbox'); // one field

Error Messages

You can define your own error messages in case validation fails. In case a form element fails validation, the message corresponding to the element's 'name' attribute will apply.

    messages: {
        phone: {
            regexp: "Invalid phone number"
        },
        file: {
            filesize: "File is too big"
        }
    },