An object validator utilizing node-validator. Supports sync/async validation and scenarios.
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README.md

EValidator

An object validator utilizing node-validator. Supports sync/async validation and scenarios.

Quick Example

var ev = new EValidator();
// Add a group of default rules
// These rules always get executed
ev.addRules({
    'name': [
        {validator: 'notEmpty', message: 'Name is empty!'},
        {validator: 'is', args: [/^[a-z]+$/]},
        {validator: 'len', args: [2, 16], message: 'Length should be between 2 and 16'},
        function (value, ctx) {
            if (value.charAt(0) != 'f') {
                ctx.addError('Name should start with f');
            }
        },
        //async validation function
        function (value, ctx, done) {
            setTimeout(function () {
                if (value.length <= 3)
                    ctx.addError('Actually length must > 3');
                done();
            }, 30);
        },
        //async rule using promise
        function (value, ctx) {
            return someAction().then(function (success) {
                if (!success)
                    ctx.addError('someAction failed');
            });
        },
    ],
    'email': {validator: 'isEmail', allowEmpty: true}
}).
//This group executes only in 'onCreate' scenario
addRules({
    'name': function (value, ctx) {
        if (value == 'flux') {
            ctx.addError('Name cannot be flux');
        }
    },
    'email': function (value, ctx, done) {
        if (value == 'flux@mail.com') {
            ctx.addError('Email cannot be flux@mail.com');
        }
        done();
    }
}, 'onCreate');

var obj = {
    name: 'flux',
    email: ''
};

//execute default rules
ev.validate(obj, function (err, result) {
    if (result.hasError()) {
      //all errors, maped by attribute name
      console.log(result.getErrors());
      
      //get errors of 'name' attribute
      console.log(result.getError('name'));
    }
});

//use promise
ev.validate(obj)
    .then(function (result) {
        if (result.hasError()) {
          //all errors, maped by attribute name
          console.log(result.getErrors());
          
          //get errors of 'name' attribute
          console.log(result.getError('name'));
        }
    }, function (err) {
        throw err;
    });

//execute default rules and 'onCreate' scenario rules
ev.validate(obj, 'onCreate', function (err, result) {
    //...
});

Validators (validator.js 3.x.x)

  • equals(str, comparison) - check if the string matches the comparison.
  • contains(str, seed) - check if the string contains the seed.
  • matches(str, pattern [, modifiers]) - check if string matches the pattern. Either matches('foo', /foo/i) or matches('foo', 'foo', 'i').
  • isEmail(str) - check if the string is an email.
  • isURL(str [, options]) - check if the string is an URL. options is an object which defaults to { protocols: ['http','https','ftp'], require_tld: true, require_protocol: false }.
  • isIP(str [, version]) - check if the string is an IP (version 4 or 6).
  • isAlpha(str) - check if the string contains only letters (a-zA-Z).
  • isNumeric(str) - check if the string contains only numbers.
  • isAlphanumeric(str) - check if the string contains only letters and numbers.
  • isHexadecimal(str) - check if the string is a hexadecimal number.
  • isHexColor(str) - check if the string is a hexadecimal color.
  • isLowercase(str) - check if the string is lowercase.
  • isUppercase(str) - check if the string is uppercase.
  • isInt(str) - check if the string is an integer.
  • isFloat(str) - check if the string is a float.
  • isDivisibleBy(str, number) - check if the string is a number that's divisible by another.
  • isNull(str) - check if the string is null.
  • isLength(str, min [, max]) - check if the string's length falls in a range.
  • isUUID(str [, version]) - check if the string is a UUID (version 3, 4 or 5).
  • isDate(str) - check if the string is a date.
  • isAfter(str [, date]) - check if the string is a date that's after the specified date (defaults to now).
  • isBefore(str [, date]) - check if the string is a date that's before the specified date.
  • isIn(str, values) - check if the string is in a array of allowed values.
  • isCreditCard(str) - check if the string is a credit card.
  • isISBN(str [, version]) - check if the string is an ISBN (version 10 or 13).
  • isJSON(str) - check if the string is valid JSON (note: uses JSON.parse).
  • isMultibyte(str) - check if the string contains one or more multibyte chars.
  • isAscii(str) - check if the string contains ASCII chars only.
  • isFullWidth(str) - check if the string contains any full-width chars.
  • isHalfWidth(str) - check if the string contains any half-width chars.
  • isVariableWidth(str) - check if the string contains a mixture of full and half-width chars.

validator.js 1.x.x polyfills

  • is() //Alias for regex()
  • not() //Alias for notRegex()
  • isUrl() //Accepts http, https, ftp
  • isIPv4()
  • isIPv6()
  • isDecimal()
  • notNull() //Check if length is 0
  • notEmpty() //Not just whitespace (input.trim().length !== 0)
  • regex(pattern, modifiers) //Usage: regex(/[a-z]/i) or regex('[a-z]','i')
  • notRegex(pattern, modifiers)
  • len(min, max) //max is optional
  • isUUIDv3() //Alias for isUUID(3)
  • isUUIDv4() //Alias for isUUID(4)
  • isUUIDv5() //Alias for isUUID(5)
  • notIn(options)
  • max(val)
  • min(val)