dynamicHelpers.js

/*!
 * Sunrise - View dynamicHelper module
 * Copyright (c) 2011 Yohei Sasaki <yssk22@gmail.com>
 * MIT Licensed
 */
var path = require('path');
var merge = require('./utils').merge;

module.exports = {
  /**
   * Returns request object
   */
  request: function(req, res){
    return req;
  },

  /**
   * Returns session object
   */
  session: function(req, res){
    return req.session;
  },

  /**
   * Returns the user object
   */
  currentUser: function(req, res){
    return req.currentUser;
  },

  /**
   * Returns true if the current user has logged in.
   */

  isLogin: function(req, res){
    return req.isLogin;
  },

  /**
   * Returns the absolute URL for the given path
   *
   * @param {String} path the url path.
   * @api public
   */
  url: function(req, res){
    var base = req.app.set('home');
    var secure = req.app.constructor.name == 'HTTPSServer';
    return function(p, options){
      if( typeof(p) == 'object' ){
        options = p;
        p = undefined;
      }
      options = merge({
        fromAppRoot: true,
        onlyPath: true
      }, options);
      var s = '';
      if( options.onlyPath == false ){
        s = (secure ? "https" : "http") + "://" + req.header('host');
      }
      if( options.fromAppRoot && base != '/' ){
        if( base[base.length-1] == '/' ){
          s = s + base.substr(0, base.length - 1);
        }else{
          s = s + base;
        }
      }
      if( p ){
        if( p[0] == '/' ){
          return s + p;
        }else{
          return s + path.join(path.dirname(req.url), p);
        }
      }else{
        return s + req.url;
      }
    };
  },

  /**
   * Returns the translated message for the user locale.
   *
   * @param {String} msgId message id.
   * @api public
   */
  _: function(req, res){
    return function(msgId){
      return req.app.i18n.translate(msgId, req.locales);
    };
  },


  title: function(req, res){
    var _ = module.exports._(req, res);
    return function(t){
      res.local("page").title = _(t);
      return t;
    };
  },

  canonical: function(req, res){
    return function(url){
      res.local("page").canonical = url;
      return url;
    };
  },

  feed: function(req, res){
    return function(url){
      res.local("page").feed = url;
      return url;
    };
  },

  js: function(req, res){
    return function(){
      var list = arguments;
      var l = res.local('page').javascripts;
      for(var i in list){
        var p = list[i];
        if( l.indexOf(path) < 0 ){
          l.push(path.join(app.route, p));
        }
      }
    };
  },

  css: function(req, res){
    return function(){
      var list = arguments;
      var l = res.local('page').stylesheets;
      for(var i in list){
        var p = list[i];
        if( l.indexOf(path) < 0 ){
          l.push(path.join(app.route, p));
        }
      }
    };
  }
};