Herbs2rest NPM

herbs2rest

Create a REST API based on herbs entities (gotu) and usecases (buchu).

Installing

$ npm install herbs2rest

Using

Use the method generateRoutes to generate api rest routes based on usecases.

herbs2rest works with express in version 4.x.

Controller List

The method needs a list of controllers like the example below:

const controllerList = [
  {
    name: 'lists',
    getAll: { usecase: require('../usecases/getLists'), controller: require('../controller') },
    getById: { usecase: require('../usecases/getLists'), id: 'listId' },
    post: { usecase: require('../usecases/createList') },
    put: { usecase: require('../usecases/updateList') },
    delete: { usecase: require('../usecases/deleteList') }
  }
]

The name field is the name of the route.

The id field is the param of the route.

The controller field is to replace the default controller.

The other fields refer to http methods using usecases (GetAll, GetById, Post, Put and Delete).

Custom Controller

To create a custom controller, it is necessary to follow this pattern.

const controller = async (usecase, req, user, res, next) => {
  // Implementation
}

Each method parameter has different data:

usecase: usecase in (buchu) pattern.
req: body, query and params of route.
user: parameter passed in the request.
res: response object of express.
next: allows the next queued route handler/middleware to handle the request.

Generate Routes

Generating and using new express routes:

const express = require('express')
const { generateRoutes } = require('herbs2rest')

const app = express()
const routes = new express.Router()

generateRoutes(controllerList, routes, true)  // true = console info endpoints

app.use(routes)

Authorization

All use cases must implement the authorization method and receive a user for authentication if using the default controller.

Example:

const { Ok, Err, usecase } = require('buchu')

const testUseCase = (injection) =>
  usecase('Test UseCase', {
    authorize: async (user) => {
      if (user === 'admin')
        return Ok()
      else
        return Err('Invalid user')
    }
  })