parse-route-data

parse-route-data

Express middleware, intercept req data object and return only what you need

Why 🤔

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This package is an express middleware who perform some actions on req.query or req.body object and allow you to define what you really want in a specific route by creating a config files filled with your API routes.

Concretely using a config file with route schemas we retrieve the data sent from the client either from req.query or req.body then we compare this data with your configuration file and if they do not match the program returns an error or he keeps running.

Install 🐙

$ npm i parse-route-data

Usage 💡

First you need to create a config object, create a file and export an object from this file, there are a couple of rules in order to correctly create the config object.

First level key

The first level of your config object should only include HTTP methods see the list below and their values should be object

• HTTP verbs

Second level key

Inside your http method object you can write your API routes, the value keys must be string and their values object, let's say your API has three routes (two statics, one with dynamic params) one with the GET method, one with POST and finally one with DELETE, you can write those routes like this:

• GET, /api/user,
• POST /api/session/user,
• DELETE /api/:user

Note - Do not forget to start all your routes with /, you may notice that to use dynamic data in your route you can use : there is nothing fancy here this is Express logic.

Third level key

At this level you can define which data your route should received,

inside the route object start creating your schema a route schema is simply an object with some keys which are object and contains some schemaType

SchemaType	Constructor	Values	Description
type*	All	Mixed	Type define which data your field must be
required	All	Boolean	Is this field must be include in your data
default	All	Mixed	Define which value your field should be if not created
maxLength	Array, String	Number	Which length your field must have
itemsType	Array	Mixed	Which data your inner items must be
itemsSchema	Array, Object	Object	Object with SchemaType
match	String	RegExp	Should match the regExp expression
canBe	String	Array	Array of strings your field should match, at least one item
min	Number	Number	Value is less or equal
max	Number	Number	Value is greater or equal
notBefore	Date	Date	Must be before date specified
strict	Object	Boolean	Must have the exact same length

Real case exemple

// ./dev/foo/config.js
module.exports = {
  get: {
    '/api/foo': null,
    "/api/:foo/route/:foofoo": {
      filter: {
          type: String,
          required: true,
      },
      test: {
          type: Array,
          itemsType: [String, Boolean],
          required: true,
      },
    }
  },
  post: {
    '/api/user': {
      name: {
        type: String,
        required: true,
        maxLength: 10,
      }
    }
  },
  delete: {
    '/api/user/:id': null,
  }
}

// ./dev/foo/routes/routeApi.js
const configRoutes = require('../config.js');
const parseRouteData = require('parse-route-data');

function greatSuccess (res, res) {
  return res.status(200).json({ success: true });
}

// 200
app.get('/api/:foo', parseRouteData(configRoutes), greatSuccess);

// req.query = {},
// Error, require req.query = { filter: 'good', test: ['good', false]};
app.get('/api/:foo/route/:foofoo', parseRouteData(configRoutes), greateSuccess);

// 200
app.get('/api/:foo/route/:foofoo?filter=good&test=['good', false]', parseRouteData(configRoutes), greateSuccess);

// req.body = {};
// Error, require req.body = { name: 'no name'}
app.post('/api/user', parseRouteData(configRoutes), greateSuccess);

// req.body = { name: 'this is a very long name'};
//Error, require name less than 10 characters.
app.post('/api/user', parseRouteData(configRoutes), greateSuccess);

// req.body = { name: 'Pennywise'};
// 200
app.post('/api/user', parseRouteData(configRoutes), greateSuccess);

// other routes..

API

parseRouteData(config, [responseFn, options])

config

Type: object - required

The config object with routes schema types.

---

responseFn

Type: function - optional

Function who takes req, res, next arguments and must return response to the client.

---

options

Type: object - optional

errorServerCode

Type: number

Default: 500

The error code to return when server error.

errorRouteDataCode

Type: number

Default: 400

The error code to return when error with route.

envIsDev

Type: string

Default: production

Either the package is runnning in dev or production mode.

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Contributing 🍰

Please make sure to read the Contributing Guide before making a pull request.

Thank you to all the people who already contributed to this project!

Maintainers 👷

List of maintainers, replace all href, src attributes by your maintainers datas.

Tostee Lucas 💻

License ⚖️

@MIT

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