Form class for node.js with validation (synchronous and asynchronous), post-processing, and support for handlebars templates.
npm install @bleskomat/formForm class for node.js with validation (synchronous and asynchronous), post-processing, and support for handlebars templates.
* Installation
* Usage
* Tests
* Changelog
* License
Add to your application via npm:
``bash`
npm install @bleskomat/form
To use with express-handlebars:
`js
const bodyParser = require('body-parser');
const express = require('express');
const Form = require('@bleskomat/form');
const Handlebars = require('express-handlebars');
const path = require('path');
const { ValidationError } = Form;
const app = express();
const hbs = Handlebars.create({
extname: '.html',
helpers: Form.handlebars.helpers,
partialsDir: [
path.join(__dirname, 'views', 'partials'),
Form.handlebars.partialsDir,
],
});
app.engine('.html', hbs.engine);
app.set('view engine', '.html');
app.set('views', path.join(__dirname, 'views'));
app.enable('view cache');
// Parse application/x-www-form-urlencoded:
app.use(bodyParser.urlencoded({ extended: false }));
const form = new Form({
title: 'Form partial example',
action: '/form',
groups: [
{
name: 'login',
inputs: [
{
name: 'username',
label: 'Username',
required: true,
validate: function(value, data) {
// value contains the value submitted for this field.data
// is an object which contains all form data.value
// Perform custom validations for this field here.
// Throw an error here to fail the validation.
// Optionally return an instance of Promise to perform asynchronous validation.
},
process: function(value) {
// contains the value submitted for this field.
// Perform custom processing for this field's value.
return value;
},
},
{
name: 'password',
label: 'Password',
required: true,
},
],
},
],
});
app.get('/form', function(req, res, next) {
res.render('form', {
form: form.serialize(),
});
});
app.post('/form', function(req, res, next) {
// req.body is provided by the bodyParser middleware.values
form.validate(req.body).then(values => {
// Validation successful.
// is an object which contains processed form data.`
}).catch(error => {
if (error instanceof ValidationError) {
res.status(400);
} else {
error = new Error('An unexpected error has occurred');
res.status(500);
}
res.render('form', {
form: form.serialize({
errors: [ error.message ],
}),
});
});
});
Run automated tests as follows:
`bash``
npm test
See CHANGELOG.md
This software is MIT licensed:
> A short, permissive software license. Basically, you can do whatever you want as long as you include the original copyright and license notice in any copy of the software/source. There are many variations of this license in use.