IMPORTANT: PLEASE DO NOT USE THIS LIB YET. IT'S STILL UNDER DEVELOPMENT
Fluent Validator JS is a port from https://github.com/andrebaltieri/FluentValidator which is an implementation of design by contracts in C#.
Creating contracts to validate your models or anything else is a good way to avoid cyclomatic complexity (Reducing the number of conditionals). https://en.wikipedia.org/wiki/Design_by_contract
Why expect Mongoose (And depends on it) to validate your model (Or Commands)? Fail Fast validations take place on validating your models as soon as possible, giving you chance to fail before it hits the database.
npm install fluent-validator --save
(()=>{
'use strict';
const customer = { name: '' };
const contract = require('fluent-validator');
contract.isRequired(customer.name, 'Customer name is required');
console.log(contract.errors);
})();
(()=>{
'use strict';
const customer = { name: '' };
const contract = require('fluent-validator');
await contract.isRequired(customer.name, 'Customer name is required');
console.log(contract.errors);
})();
(()=>{
'use strict';
const customer = { name: '' };
const contract = require('fluent-validator');
await contract.isRequired(customer.name, 'Customer name is required');
await contract.clear();
console.log(contract.errors);
})();
| Method/Prop | Desc | Test | Status |
|---|---|---|---|
| errors | Return a list of errors | OK | Ready |
| clear () | Clear the error list | OK | Ready |
| isRequired (val, message) | Check if a value is null or empty | OK | Ready |
| hasMinLen (val, min, message) | NOK | ||
| hasMaxLen (val, max, message) | NOK | ||
| isFixedLenght (val, len, message) | NOK | ||
| isEmail (email, message) | NOK | ||
| isUrl (url, message) | NOK | ||
| isGreaterThan (val1, val2, message) | NOK | ||
| isGreaterOrEqualsThan (val1, val2, message) | NOK | ||
| isLowerThan (val1, val2, message) | NOK | ||
| isLowerOrEqualsThan (val1, val2, message) | NOK | ||
| isBetween (val1, val2, message) | NOK | ||
| contains (val, message) | NOK | ||
| isNull (val, message) | NOK | ||
| isNotNull (val1, val2, message) (val, message) | NOK | ||
| areEquals (val1, val2, message) | NOK | ||
| areNotEquals | NOK | ||
| isTrue (val, message) | NOK | ||
| isFalse (val, message) | NOK |