validator-extras.js
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'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 str.indexOf(elem) >= 0 && !!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];
};
// Deprecate this.
validator.notNull = function() {
throw new Error('Warning "notNull" validation has been deprecated in favor of Schema based "allowNull"');
};
// 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;
} else {
// 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;