Mongoose Validator

Validators for Mongoose schemas utilising node-validator.

Mongoose Validator simply returns Mongoose style validation objects that utilise node-validator for the data validation.

##Installation##

npm install mongoose-validator

##Usage##

var mongoose = require('mongoose'),
    validate = require('mongoose-validator').validate;

// validate([method], [arg1], [arg2] ... );

var nameValidator = [validate('len', 3, 50), validate('isAlphanumeric')];

var Schema = new mongoose.Schema({
    name: {type: String, required: true, validate: nameValidator}
});

Error objects are returned as normal via Mongoose.

##Error Messages##

Custom error messages are now back in 0.2.1 and can be set through the options object:

validate({message: "String should be between 3 and 50 characters"}, 'len', 3, 50)

Pass validation if empty

Some of node-validator validators require a value to check against (isEmail, isUrl etc). There may be instances where you don't have a value to check i.e. a path that is not required and as such these few validators return an false value causing validation to fail. This can now be bypassed by setting the passIfEmpty option:

var validator = validate({passIfEmpty: true}, 'isUrl');

website: {type: String, validate: validator};

Custom validators

As of 0.2.1 custom validators can be added:

require('mongoose-validator').extend('isBoolean', function () {
    return 'boolean' === typeof this.str;
}, 'Not a boolean');

require('mongoose-validator').extend([method name], [validator], [default error message]);

Custom validators are called normally:

validate({passIfEmpty: true}, 'isBoolean');

Arguments can be passed like so:

require('mongoose-validator').extend('isType', function (type) {
    return type === typeof this.str;
}, 'Not correct type');

validate('isType', 'string');

NOTE: As per node-validator documentation, the currently tested value is accessed through this.str.

##Contributors##

Special thanks to Francesco Pasqua for heavily refactoring the into something far more future proof.