使用玉的heroku出错

时间:2013-02-14 22:02:03

标签: node.js heroku pug

调用render函数时出现错误[此应用程序在Heroku上运行]

web.js:

var async   = require('async');
var express = require('express');
var util    = require('util');

// create an express webserver
var app = express.createServer(
  express.logger(),
  express.static(__dirname + '/public'),
  express.bodyParser(),
  express.cookieParser(),
  // set this to a secret value to encrypt session cookies
  express.session({ secret: process.env.SESSION_SECRET || 'secret123' }),
);

app.set('views', __dirname + 'views');
app.set('view engine', 'jade');

// listen to the PORT given to us in the environment
var port = process.env.PORT || 3000;

app.listen(port, function() {
  console.log("Listening on " + port);
});



app.get('/', function ( req, res ) {
    res.render('ok', { title : 'ok' });
});

ok.jade:

!!! 5
  html(lang='en')  
    head
      title= title   
    body 
      div#navigation 

的package.json:

{
  "name":    "package",
  "version": "0.0.1",

  "description": "Facebook integration, Node.js",

  "dependencies": {
    "express": "latest",
    "jade":"0.17.0"
  },

  "engines": {
    "node": "0.8.19",
    "npm" : "1.2.10"
  }
}

错误:

TypeError: Cannot read property '0' of undefined
    at new View (/app/node_modules/express/lib/view.js:41:65)
    at Function.app.render (/app/node_modules/express/lib/application.js:486:12)
    at ServerResponse.res.render (/app/node_modules/express/lib/response.js:753:7)
    at /app/web.js:32:9
    at callbacks (/app/node_modules/express/lib/router/index.js:161:37)
    at param (/app/node_modules/express/lib/router/index.js:135:11)
    at pass (/app/node_modules/express/lib/router/index.js:142:5)
    at Router._dispatch (/app/node_modules/express/lib/router/index.js:170:5)
    at Object.router (/app/node_modules/express/lib/router/index.js:33:10)
    at next (/app/node_modules/express/node_modules/connect/lib/proto.js:199:15)

如果我将res.render('ok', {title : 'ok'});替换为res.end('some text');完美无缺。

任何解决方案?

谢谢!

1 个答案:

答案 0 :(得分:2)

Express的最新版本似乎使用app.engine()而不是app.set('view engine')(doc

app.engine('jade', require('jade').__express);

您可以查看更多详情this function source

这可以解决您的问题。

另外,在您的观看路径中添加“/”(或将其移除为快递中的it's default

编辑:我检查了“查看引擎”设置是否在某处使用it is,并且像本杰明说的那样,我不明白为什么你对app.set('view engine')的调用不起作用。

编辑2:我只是试图运行你的代码,但有几个失败点。这是一个固定的web.js文件,可以在我的本地计算机上运行:

var express = require('express');
var util    = require('util');

// create an express webserver
var app = express(
  express.logger(),
  express.static(__dirname + '/public'),
  express.bodyParser(),
  express.cookieParser(),
  // set this to a secret value to encrypt session cookies
  express.session({ secret: process.env.SESSION_SECRET || 'secret123' })
);

app.set('views', __dirname + '/views');
app.set('view engine', 'jade');

// listen to the PORT given to us in the environment
var port = process.env.PORT || 3000;

app.listen(port, function() {
  console.log("Listening on " + port);
});



app.get('/', function ( req, res ) {
    res.render('ok', { title : 'ok' });
});

更新日志:

  • 删除require('async'),因为它未被使用,而不是在package.json
  • 使用express()代替不推荐使用的'.createServer'
  • 在视图目录路径设置
  • 中添加了缺少的/
  • express.session致电
  • 后删除了逗号

Todo在你身边:   - 删除html文件中ok.jade之前的缩进。