node-restify-validation

Validation for REST Services built with node-restify in node.js

Requirements

node-restify-validation requires at least restify 2.6.0 since the validation model is defined in the route-object. (restify/node-restify#408)
Currently it is required to map all parameters to the "params-scope" through the mapParams-option, since all validations will be performed agains the req.params object. (TODO: scope sensitive validation)

Simple request validation with node-restify

Goal of this little project is to have the validation rules / schema as close to the route itself as possible on one hand without messing up the logic with further LOCs on the other hand.

Example:

var server = restify.createServer();
server.use(restify.queryParser());
server.use(restifyValidation.validationPlugin( { errorsAsArray: false }));

server.get({url: '/test/:name', validation: {
    name: { isRequired: true, isIn: ['foo','bar'], scope: 'path' },
    status: { isRequired: true, isIn: ['foo','bar'], scope: 'query' },
    email: { isRequired: false, isEmail: true, scope: 'query' },
    age: { isRequired: true, isInt: true, scope: 'query' }
}}, function (req, res, next) {
    res.send(req.params);
});

server.listen(8001, function () {
    console.log('%s listening at %s', server.name, server.url);
});

Use

Simply install it through npm

npm install node-restify-validation

Documentation powered by swagger

On top of the validation schema the node-restify-swagger library should later-on generate the swagger resources to provide a hands-on documentation.

Demo project

A simple demo project can be cloned from node-restify-demo.

Supported validations

isRequired: true | function()
equalTo: {'fieldName'}

contains
equals
is
isAfter
isAlpha
isAlphanumeric
isBefore
isCreditCard
isDate
isDecimal
isDivisibleBy
isEmail
isFloat
isHexColor
isHexadecimal
isIP
isIPNet
isIPv4
isIPv6
isIn
isInt
isLowercase
isNumeric
isUUID
isUUIDv3
isUUIDv4
isUppercase
isUrl
max
min
not
notContains
notIn
notRegex
regex

Conditional validations

All validation parameters are able to deal with functions as parameters.

For instance the parameterMatches-Condition:

module.exports.paramMatches = function (param, value) {
    if (_.isArray(value)) {
        return function() {
            return _.contains(value, this.req.params[param]);
        };
    } else {
        return function() {
            return _.isEqual(value, this.req.params[param]);
        };
    }
};

Which will be used for instance as follows:

var validation = isRequired: require('node-restify-vaidation');
...
parameter: { isRequired: validation.when.paramMatches('param1', ['a', 'b']) }

As result the parameter will only be required when param1 matches a or b. The called method will have a context (this) containing the following information:

req: the request object
validationModel: the complete validation model
validationRules: the validationRules for the current atribute
options: the options which have initially been passed
params: flattend request parameters
recentErrors: errors which have been computed until now

Inspiration

node-restify-validation was & is inspired by backbone.validation. In terms of validation node-restify-validation makes use of node-validator.

License

The MIT License (MIT)

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

tianp/node-restify-validation