object-validator-js

object-validator

Small wrapper to validate JSON objects with the Validator library. With some small added validations.

Installation

$ npm install object-validator-js --save

Using

validator( OBJECT, SCHEMA ) returns Array of errors (empty or no array if no errors)

    var request = require('request');
    var validator = require('object-validator');

    request({ url: '/user' }, function (err, res, body) {
        validator(data, {
            _id: 'isMongoId', // Validator test
            active: true, // NonString schema test (doesn't use validator)
            enabled: 'isBoolean',
            contact: {
                first_name: 'isString', // Checks value is typeof string
                last_name: 'isString', // Checks value is typeof string
                nick_name: 'isString', // Checks value is typeof string
                email: 'isEmail', // Validator test
                phone: 'isString' // Checks value is typeof string
            },
            auth: {
                login_attempts: 'isInt', // Validator test
                username: 'isString', // Validator test
                password: 'isNull', // Validator test
                token: 'isString' // Checks value is typeof string
            },
            preferences: { state: { last_emailed: 'isDate' } }, // Validator test
            timestamps: {
                created: 'isDate', // Validator test
                killed: '~isDate' // Validator test but can be null
             }
        });
    });

Additional Validations

• isString in schema - Returns true is value is typeof string
• isBoolean in Schema - Returns true is value is typeof boolean
• isNumber in Schema - Returns true is value is typeof number
• isArray in Schema - Returns true is value Array.isArray
• isFunction in Schema - Returns true is value is typeof function
• NonString in schema - Checks value with === comparison;
• ! before validator method will give the negative result
• ~ before validator method validates method if data present (optional)

Errors are all bundled into single array

   validator({ path: { to: { value:  '23' } } }, {  "path.to.value": ['isInt', {min: 2, max: 10}] })

   // Error response is array (if no errors it returns true)
   [
     {
       path: 'path.to.value',
       validator: [ 'isInt', [Object] ],
       value: '23',
       message: 'path.to.value failed ["isInt",{"min":2,"max":10}] validator test.'
      }
    ]