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Viewing file:     validator-extras.js (2.71 KB)      -rw-r--r--

'use strict';

const _ = require('lodash');
const validator = _.cloneDeep(require('validator'));
const moment = require('moment');

const extensions = {
  extend(name, fn) {
    this[name] = fn;

    return this;
  },
  notEmpty(str) {
    return !str.match(/^[\s\t\r\n]*$/);
  },
  len(str, min, max) {
    return this.isLength(str, min, max);
  },
  isUrl(str) {
    return this.isURL(str);
  },
  isIPv6(str) {
    return this.isIP(str, 6);
  },
  isIPv4(str) {
    return this.isIP(str, 4);
  },
  notIn(str, values) {
    return !this.isIn(str, values);
  },
  regex(str, pattern, modifiers) {
    str += '';
    if (Object.prototype.toString.call(pattern).slice(8, -1) !== 'RegExp') {
      pattern = new RegExp(pattern, modifiers);
    }
    return str.match(pattern);
  },
  notRegex(str, pattern, modifiers) {
    return !this.regex(str, pattern, modifiers);
  },
  isDecimal(str) {
    return str !== '' && !!str.match(/^(?:-?(?:[0-9]+))?(?:\.[0-9]*)?(?:[eE][+-]?(?:[0-9]+))?$/);
  },
  min(str, val) {
    const number = parseFloat(str);
    return isNaN(number) || number >= val;
  },
  max(str, val) {
    const number = parseFloat(str);
    return isNaN(number) || number <= val;
  },
  not(str, pattern, modifiers) {
    return this.notRegex(str, pattern, modifiers);
  },
  contains(str, elem) {
    return !!elem && str.includes(elem);
  },
  notContains(str, elem) {
    return !this.contains(str, elem);
  },
  is(str, pattern, modifiers) {
    return this.regex(str, pattern, modifiers);
  }
};
exports.extensions = extensions;

// instance based validators
validator.isImmutable = function(value, validatorArgs, field, modelInstance) {
  return modelInstance.isNewRecord || modelInstance.dataValues[field] === modelInstance._previousDataValues[field];
};

// extra validators
validator.notNull = function(val) {
  return val !== null && val !== undefined;
};

// https://github.com/chriso/validator.js/blob/6.2.0/validator.js
_.forEach(extensions, (extend, key) => {
  validator[key] = extend;
});

// map isNull to isEmpty
// https://github.com/chriso/validator.js/commit/e33d38a26ee2f9666b319adb67c7fc0d3dea7125
validator.isNull = validator.isEmpty;

// isDate removed in 7.0.0
// https://github.com/chriso/validator.js/commit/095509fc707a4dc0e99f85131df1176ad6389fc9
validator.isDate = function(dateString) {
  // avoid http://momentjs.com/guides/#/warnings/js-date/
  // by doing a preliminary check on `dateString`
  const parsed = Date.parse(dateString);
  if (isNaN(parsed)) {
    // fail if we can't parse it
    return false;
  }
  // otherwise convert to ISO 8601 as moment prefers
  // http://momentjs.com/docs/#/parsing/string/
  const date = new Date(parsed);
  return moment(date.toISOString()).isValid();
};

exports.validator = validator;