injection

MVC framework to make the use of Express even easier

npm install injection
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injection

MVC framework to make the use of Express even easier.
Easy configuration. Intuitive linking of models, views, controllers and middlewares.

Installation

sudo npm install -g injection

Create an app

injection yourApp --jade

Choose your favorite templating language: --jade, --ejs, --swig, --mustache, etc...
If no templating is defined, the default templating will be handlebars.

Configure your app

Edit config/development.json or config/production.json.
Set your environment variable NODE_ENV accordingly.

Define routes

Edit the file routes. For example:

GET/user/:name -> controller/user.js

Define controllers

Create files in the controller directory, ex: controller/user.js.
A controller is a JS file (a module) with a controller function.

//controller/user.js
exports.controller = function(req, res) {
  res.send('Hello World');
}

Define models

Create files in the model directory, ex: model/person.js.
A model is just a node module that will be accessible from controllers.

//model/person.js
exports.get = function(name, Return) {
  db.user.findOne({name: name}, function(err, user) {
    Return(user);
  });
}

Define views

Create files in the view directory, ex: view/user.html.
A view is just a template file from your favorite templating language: handlebars, jade, etc...
Define your favorite templating when you create the app, ex: injection yourApp --jade.

//view/user.html
<h1>Hello {{name}}</h1>

Define middlewares

Create files in the middleware directory, ex: middleware/yourMiddleware.js.
For example, a useless middleware that signs every request with your name:

//middlewares/yourMiddleware.js
exports.middleware = function(options) {
  var name = options.name;
  return function(req, res, next) {
    req.name = name;
    next();
  }
}

//config/development.json
{
  "middleware": {
    ...,
    "yourMiddleware": {
      "name": "yourName"
    },
    ...
  }
}

This is how you set a global middleware. If you want to set a middleware only for some controllers, see the section on passing middlewares.

Define initializers

Create files in the init directory, ex: init/redis.js.
For example, init your redis connection:

//init/redis.js
exports.init = function(options, Return) {
  var app = this;
  var host = options.host;
  var port = options.port;
  ...
  global.redis = redisConnection;
  Return(); //when the connection is set. 
}

//config/development.json
{
  ...,
  "redis": {
    "port": 5000,
    "host": "localhost"
  },
  ...
}

In a controller, call a model with the $ global variable:

//controller/user.js
exports.controller = function(req, res) {
  $.user.get(req.params.id, function(user) {
    res.send('Hello ' + user.name);
  });
}

//model/user.js
exports.get = function(id, Return) {
  db.user.findOne({id: id}, function(err, user) {
    Return(user);
  });
}

Or you can do it by creating a getter for the user argument:

//controller/user.js
exports.controller = function(req, res, user) {
  res.send('Hello ' + user.name);
}

exports.getUser = function(req, callback) {
  $.user.get(req.params.id, callback);
}

//model/user.js
exports.get = function(id, Return) {
  db.user.findOne({id: id}, function(err, user) {
    Return(user);
  });
}

To render the view user.html in the controller user.js

//controller/user.js
exports.controller = function(req, res, user) {
  res.render(user);
}

//view/user.html
<h1>Hello {{name}}</h1>

Passing middlewares to controllers

Define a middleware in the middleware directory, ex: middleware/notLogged.js.

//middleware/notLogged.js
exports.middleware = function(notLoggedAction) {
  return function(req, res, next) {
    req.session && req.session.logged ?
      next() :
      notLoggedAction(req, res, next);
  }
}

Attach it to your controller just by exporting it:

//controller/user.js
exports.controller = function(req, res) {
  res.send('Hello, you are logged!');
}

exports.notLogged = function(req, res) {
  res.redirect('login');
}

Run your app

node app

Compatibility with Express

All the methods from Express can be called, ex: req.param, res.json.

MIT License

Copyright (c) 2013 Jie Meng-Gerard contact@jie.fr

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the 'Software'), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

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