Validate-Box

Same I18n validation on server and client for web applications.

How It Works

1. Validate inputs in HTML form.
2. Fetch response to server optionally by ajax.

Usage

JS Applications

Suitable for web apps with a great variety of forms.

Show instructions

1. Install by npm:

    $ npm install validate-box
    

Config

Start http server for validate request examples from client.

	const fs = require("fs"); //file system
	const url = require("url"); //url parser
	const http = require("http"); //http server
	const qs = require("querystring"); //parse post data
	const valid = require("validate-box"); //validator

	const _maxFieldsSize= 20 * 1024 * 1024; //20mb

	//create server instance
	const server = http.createServer(function(req, res) {
		let parts = url.parse(req.url.toLowerCase(), true); //parse url
		let pathname = parts.pathname; //https://example.org/abc/xyz?123 = /abc/xyz
		//Static request => res.end()
		if (pathname.indexOf("/favicon.ico") > -1)
			return res.end(); //ignore icon request
		if ((pathname.indexOf("/css/") > -1) || (pathname.indexOf("/js/") > -1))
			return res.end(fs.readFileSync(__dirname + pathname).toString());

		valid.setI18n(parts.query.lang);
		if (req.method == "POST") { //post request
			let rawData = ""; //buffer
			req.on("data", function(chunk) {
				rawData += chunk;
				if (rawData.length > _maxFieldsSize) { //20mb
					delete rawData; //free body memory
					req.connection.destroy(); //FLOOD ATTACK OR FAULTY CLIENT, NUKE REQUEST
				}
			});
			req.on("end", function() {
				req.body = (req.headers["content-type"] == "application/json") ? JSON.parse(rawData) : qs.parse(rawData);
				console.log("----------", "Validating", "----------");
				console.log(req.body);

				let error = {}; //err container
				let fields = req.body; //request fields
				error.name = valid.vb.size(fields.name, 1, 200) || "Field name ame tot valid";
				error.subject = valid.vb.size(fields.subject, 0, 200) || "Field subject not valid";
				error.email = (fields.email && valid.vb.email(fields.email)) || "Invalid email format";
				error.idUsuario = fields.idUsuario || "User is required";
				error.id = error.idUsuario ? valid.nb.toFloat(fields.idUsuario) : 0;
				if (error.id <= 0)
					error.idUsuario = "User not found";
				res.end(JSON.stringify(error), "application/json", () => {
					console.log("----------", "Results", "----------");
					console.log("Error:", error);
				});
			});
		}
		else //get request
			res.end(fs.readFileSync("src/views/index.html"), "text/html", () => {
				console.log(req.url, "->", "src/views/index.html");
			});
	});

test

Lunch jest testing

	$ npm test