Simple nodejs module for validate object elements by custom rule with custom error messages.
Validators for various object types are declares in a config file (File may contain validator definitions for one or more objects).
// Properties in an ordered sequence
var personvalidator = [
{
fieldId : 'firstname',
fieldName : 'First Name',
rules:[
{ method : 'notEmpty', message: 'First Name cannot be empty'},
{ method : 'maxLength', param : 2}
]
},
{
fieldId : 'lastname',
fieldName : 'Last Name',
rules:[
{ method : 'notEmpty', message: 'Last Name cannot be empty'},
{ method : 'maxLength', param : 2}
]
},
];
module.exports.validationPool = {
person: personvalidator
};
Load this config in your application (Node.js example)
// Load Config
var validatorConfig = require("./validationmodel.conf.js");
// Load Object Validator Module
var ObjValidation = require('objvalidator');
Somewhere in the app - run validation...
var type = 'person';
// Lookup validator for the object
var personvalidator = validatorConfig[type];
// Instantiate validator
var validator = new ObjValidation.ObjValidation();
// Object to Validate
var a_person = {'firstname': 'Bob', 'firstname': '',};
// Run Validation
var validation = validator.validateProcess(personvalidator, a_person);