aksel / model-validator

PropTypes-like validation for Express.

# model-validator

Validation against models.

Heavily inspired by React's PropTypes.

# Usage
const { validate, types } = require('express-model-validator');

const model = {
  name: types.string.isRequired, // Must be string
  age: types.number, // Optional, must be number
};

validate(model, { name: 'Aksel' }); // true
validate(model, { name: 'Aksel', age: 12 }); // true
validate(model, { name: 1 }); // false
validate(model, { foo: 'bar' }); // false

// As Express middleware
const validateMiddleware = model => (req, res, next) => {
  if (validate(model, req.body)) {
    next();
  } else {
    res.sendStatus(400);
  }
};

app.use('/validate', validateMiddleware(model));