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Clean, rails-like, resourceful routing for Express

tag: v0.0.6

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Express Resource (new)

express-resouce-new provides resourceful routing to express with improved nesting and auto-require.

Installation

npm:

$ npm install express-resource-new

Usage

In your main application file (i.e. app.js or server.js) just add the following:

var express = require('express'),
    Resource = require('express-resource-new'), // <- Add this (Resource really isn't needed)
    app = express.createServer();

app.configure(function(){
  app.set('views', __dirname + '/views');
  // Add the following to your configure block (you can use any path you want)
  app.set('controllers', __dirname + '/controllers');
  /* ... */
});

Now in the ./controllers directory you can put your "controllers" with one or more of the supported actions as follows:

./controllers/articles/index.js:

module.exports = {
  index: function(request, response) {
    response.send('articles index');
  },
  show: function(request, response) {
    response.send('show article ' + request.params.article);
  },
  new: function(request, response) {
    response.send('new article');
  },
  create: function(request, response) {
    response.send('create article');
  },
  edit: function(request, response) {
    response.send('edit article ' + request.params.article);
  },
  update: function(request, response) {
    response.send('update article ' + request.params.article);
  },
  destroy: function(request, response) {
    response.send('delete article ' + request.params.article);
  }
};

express-resource-new also supports a special action, all, that gets called for all other actions in the resource.

module.exports = {
  all: function(request, response, next) {
    // do some preloading or user authentication here
    next();
  },
  index: function(request, response) {
    response.send('articles index');
  },
  /* ... */
};

"What if I want to create a resource on the root path or change the id variable name?" express-resource-new handles that by allowing you to set an options property on the controller object like so:

module.exports = {
  options: {
    root: true, // Creates resource on the root path (overrides name)
    name: 'posts', // Overrides module name (folder name)
    id: 'id' // Overrides the default id from singular form of `name`
  },
  index: function(request, response) {
    response.send('articles index');
  },
  /* ... */
};

Lastly just call app.resource() with your controller name. Nesting is done by passing a function that can call app.resource() for each nested resource. Options can also be passed as the second parameter which override the options set in the controller itself.

var express = require('express'),
    Resource = require('express-resource-new'),
    app = express.createServer();

app.configure(function(){
  app.set('views', __dirname + '/views');
  app.set('controllers', __dirname + '/controllers');
  /* ... */
});

app.resource('articles', function() {
  app.resource('comments', { id: 'id' }); // You can also call this.resource('comments')
});

Default Action Mapping

Actions are, by default, mapped as shown below. These routs provide req.params.article for the substring where ":article" is and, in the case of the nested routes, req.params.comment for the substring where ":comment" is as shown below:

articles:
index   GET     /articles.:format?
new     GET     /articles/new.:format?
create  POST    /articles.:format?
show    GET     /articles/:article.:format?
edit    GET     /articles/:article/edit.:format?
update  PUT     /articles/:article.:format?
destroy DELETE  /articles/:article.:format?

article_comments:
index   GET     /articles/:article/comments.:format?
new     GET     /articles/:article/comments/new.:format?
create  POST    /articles/:article/comments.:format?
show    GET     /articles/:article/comments/:comment.:format?
edit    GET     /articles/:article/comments/:comment/edit.:format?
update  PUT     /articles/:article/comments/:comment.:format?
destroy DELETE  /articles/:article/comments/:comment.:format?

Content Negotiation

Content negotiation is currently only provided through the req.params.format property, allowing you to respond accordingly.

License

The MIT License

Copyright (c) 2012 TJ Peden <tj.peden@tj-coding.com>

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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