koa-route-tree

koa-route-tree

Path is route, also path is parameter.
The most fast and efficient route.
Now, it support restful route mode.

Let's see it.

Install

npm install koa-route-tree --save

Caution!

This is only support for koa@2+!

If you use koa@1, install it with version 1.4.0. npm install koa-route-tree@1.4.0 --save

Usage

// File: app.js
 
const Koa = require('koa');
const Route = require('koa-route-tree');
 
const app = new Koa();
 
const fileRouter = ['robots.txt'];
app.use(Route(__dirname + '/controller', {
    '/appList': '/app/list',
    'favicon.ico': '/index/favicon.ico'
}, async function (ctx, next, controller) {
    let pathname = ctx.path.substring(1);
    
    if (fileRouter.indexOf(pathname) > -1) {
        ctx.body = 'Allows: *';
        return;
    }
    
    // console.log(controller);
    // and do next if you want
    // await next();
}));

Restful mode example

// File: controllers/app/list.js
 
/**
 * Normal Get Request, Support urls:
 * 1. /app/list => page: undefined | second: undefind
 * 2. /app/list/0 => page: 0 | second: undefined
 * 4. /app/list/1/a => page: 1 | second: a
 */
exports.index = function (page, second) {
    this.body = 'Page/' + page + '/Second/' + second;
};
 
// restful route mode
/**
 * For GET Request. Support urls:
 * 1. GET /app/list/set => page: undefined | second: undefind
 * 2. GET /app/list/0/set => page: 0 | second: undefined
 * 3. GET /app/list/1/set/a => page: 1 | second: a
 * 4. GET /app/list/set/1/a => page: 1 | second: a
 */
exports.set = function (page, second) {
    this.body = 'GET Page/' + page + '/Second/' + second;
};
 
/**
 * The same as the above GET request
 */
exports.postSet = function (page, second) {
    this.body = 'POST Page/' + page + '/Second/' + second;
};
/**
 * The same as the above GET request
 */
exports.putSet = function (page, second) {
    this.body = 'PUT Page/' + page + '/Second/' + second;
};

Class

Route(controllerDirectory[, alias][, withoutRouteHandler])

Parameters

• controllerDirectory is a string of controller directory.

• alias is a object for alias to a path or function.

  const alias = {
      '/d': '/index/download', // a short download link
      'a/b': 'your/path' // the same link, this is equivalent to /a/b <=> /your/path
  };

• withoutRouteHandler *(ctx, next, controller) is a middleware function for handle the request without route.

  So the context of the function is the current koa context.

Static Attribute

route.controller is a freeze object like a tree. And the value must be a function at the end of the tree.

Controller

• index is default path.

  // File: app.js
   
  // GET /app
  exports.index = function () {
      this.body = 'app';
  };
  exports.index = function (id) {
      this.body = id || 'app';
  };

• Http method is a prefix of function name but GET.

  // File: index.js
   
  // GET /
  exports.index = function (id) {
      this.body = id;
  };
   
  // POST /
  exports.postIndex = function (id) {
      this.body = id;
  };
   
  // PUT /
  exports.putIndex = function (id) {
      this.body = id;
  };
   
  // DELETE /
  exports.deleteIndex = function (id) {
      this.body = id;
  };

Test

./node_modules/.bin/mocha
# or 
npm test # npm run test 

The End

Anyway, try to use. And see the example in example directory.

Hope this is useful to you.

And give me your pull request if you have any improvements or suggestions.