Validator-lib

Validations for objects. Can be used to validate form inputs and such. Doc is WIP.

Installation

npm install validator-lib

How to use

import Validator from "validator-lib";
 
var data = {
  person: {
    firstName: "Ronald",
    lastName: "Dump"
  },
  address: {
    street: "",
    houseNumber: null
  }
}
 
var rules = [
  {
    validator: "required",
    fields: [ "person.firstName", "person.lastName" ],
    message: "First and/or last name are required"
  },
  {
    validator: "required",
    fields: [ "address.street"],
    message: "Street is required"
  },
  {
    validator: "number",
    fields: [ "address.houseNumber" ],
    message: "House number must be a number",
    allowBlank: true
  }
];
 
validator = new Validator(rules, data);
validator.validate();

Rule options

• validator: One of the built in validators:
  • required
  • number
    • gt: > number
    • gte: >= number
    • lt: < number
    • lte: <= number
  • length
    • gt: > length
    • gte: >= length
    • lt: < length
    • lte: <= length
  • format
  • email
  • custom
    • validation: custom validation function
• fields: Determines which fields should be validated in this rule
• message: The error message for the fields when validation fails
• if: Contains function that determines if the rule should be ran
• on: Only runs rule when the given event matches
• allowBlank: Allows blank values

Validator methods

• isValid()
• isFieldValid(fieldName)
• getErrorMessages()
• getErrorMessagesForField(fieldName)