Contents
Target
Make RESTful API with node.js, express and coffee script.Prepare Environment
[Install node.js] $ git clone git://github.com/creationix/nvm.git ~/.nvm $ vim ~/.bashrc source ~/.nvm/nvm.sh $ source ~/.bashrc $ nvm install v0.8.7 $ vim ~/.bashrc nvm use v0.8.7 $ source ~/.bashrc [Install express and coffeescript] $npm install express ejs coffee-script [Create Template] $express -e -t ejs restfulapi [Install mocha and chai for test] $npm install mocha chai
Write model with Coffee Script
Try to make simple validate model for get parameter.class Requestline constructor: (params) -> @params = params @validator = "uid" : /^[0-9]+$/ getParams: -> return @params validate: -> for key, value of @params if key of @validator and @validator[key].test(value) == false return false return true exports.Requestline = Requestline
chai = require 'chai'
expect = chai.expect
chai.should()
Requestline = require('../models/requestline').Requestline
describe 'Requestline',->
describe 'getParams',->
before ->
params =
key1 : 'val1'
key2 : 'val2'
@requestline1 = new Requestline(params)
it 'should return {key1:val1,key2:val2}', ->
expected =
'key1':'val1'
'key2':'val2'
@requestline1.getParams()['key1'].should.equal(expected['key1'])
@requestline1.getParams()['key2'].should.equal(expected['key2'])
describe 'validate',->
before ->
params =
uid : 2354
@requestline2 = new Requestline(params)
it 'should return true', ->
@requestline2.validate().should.be.true
Compile and connect with express
[Test] $mocha --compilers coffee:coffee-script spec/requestline_spec.coffee [Compile] $coffee -b -c models/requestline.coffee -o libs/requestline.js
/*
* GET home page.
*/
var requestline = require('../libs/requestline');
exports.index = function(req, res){
var reqline = new requestline['Requestline'](req.query);
console.log("Query Parameters");
console.log(reqline.getParams());
if (reqline.validate()) {
res.json([{ author : 'Audrey Hepburn', text : "Nothing is impossible, the word itself says 'I'm possible'!"}]);
} else {
res.json({ error : { type : "Qeury Syntax Error", message : "Query Syntax Error"}});
}
//res.render('index', { title: 'Express'});
};And then, type “node app.js”.