ekryski / paraminator

A Flexible Parameter Validation Module

I will Paraminate You...

Paraminator is a flexible and powerful paramater validator module that allows you to define validation rules and error messages in a testable manner.

It is the Arnold Schwarzenegger of validation.

This is currently under development and is not intended for use yet!

Defining Rules

Rules are defined in a JSON structure making it easy to customize and read.

var todoRules = {
	'id': {
		'required': true,
		'message': 'Need to provide a valid id',
		'rules': [
			paraminator.isNotNull(),
			paraminator.regEx(/foo/i)
		]
	},
	'number': {
		'required': true,
		'message': 'Need to provide a valid number',
		'rules': [
			paraminator.isFloat()
		]
	}
}

Validating

var paraminator = require('paraminator');

var todoRules = {
	'id': {
		'required': true,
		'message': 'Need to provide a valid id',
		'rules': [
			paraminator.isNotNull(),
			paraminator.regEx(/foo/i)
		]
	}
}

app.get('/todos:id', function(req, res, next){
	paraminator.validate( todoRules, req.body, function(errors, warnings, valid){
		if (!valid) console.log(errors);
		else console.log('parameters are valid!');
	});
});

This is largely based off of chriso's node-validator however I wanted something that is more flexible and that can do proper rule chaining.