app.js

/**
 * Created by qieguo on 2016/8/25 0025.
 */

'use strict';

var express = require('express');
var path = require('path');
var favicon = require('serve-favicon');
var logger = require('morgan');
var cookieParser = require('cookie-parser');
var bodyParser = require('body-parser');

var app = express();

// view engine setup
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'hbs');

// 注册原子模块和自定义helper（简单理解成hbs的标签）
var hbs = require('hbs');
hbs.registerPartials(path.join(__dirname, 'views', 'partials'));
hbs.registerHelper('section', function (name, options) {
  if (!this._sections) {
    this._sections = {};
  }
  this._sections[name] = options.fn(this);
  return null;
});


// uncomment after placing your favicon in /public
app.use(favicon(path.join(__dirname, 'public', 'favicon.ico')));
app.use(logger('dev'));
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({extended: false}));
app.use(cookieParser());
app.use(express.static(path.join(__dirname, 'public')));

var routes = require('./routes');
app.use('/', routes);

// catch 404 and forward to error handler
app.use(function (req, res, next) {
  var err = new Error('Not Found');
  err.status = 404;
  next(err);
});

// error handlers

// development error handler
// will print stacktrace
if (app.get('env') === 'development') {
  app.use(function (err, req, res) {
    res.status(err.status || 500);
    res.render('error', {
      message: err.message,
      error: err
    });
  });
}

// production error handler
// no stacktraces leaked to user
app.use(function (err, req, res) {
  res.status(err.status || 500);
  res.render('error', {
    message: err.message,
    error: {}
  });
});

console.log('start server on http://localhost:8080');

module.exports = app;