TypeError:尝试在Express JS中使用Mustache时this.engine不是函数 [英] TypeError: this.engine is not a function when trying to use Moustache in Express JS
问题描述
作为我在NodeJS上尝试的第一件事，我正在构建一个简单的应用程序，该应用程序显示一个HTML页面，该页面告诉访问者其IP地址.
As the first thing I ever try on NodeJS, I'm building a simple app that displays a HTML page which tells visitors their IP address.
这是它的样子
var express = require('express');
var app = express();
app.set('view engine', 'mu2');
app.get('/', function (req, res) {
res.setHeader('Content-Type', 'text/html'); // Do I have to do this? I'm not sure.
res.render('frontPage.html', {
ip: req.ip
});
res.send();
});
app.listen(8080, function() {
console.log("Listening on port 8080");
});
/views/frontPage.html的外观如下:
<!DOCTYPE html>
<html>
<head>
<title>Hello, World!</title>
</head>
<body>
<h1>Hello, World!</h1>
<hr>
<p>If you're reading this, the NodeJS setup is working. Check your developer console. See if there's any HTTP error in there.</p>
<p>Anyway, your IP address is {{ip}}</p>
</body>
</html>
这是每次发送请求时控制台中显示的内容:
And here's what I get in the console every time I send a request:
TypeError: this.engine is not a function
at View.render (/Users/macuser/NodeJS/hello/node_modules/express/lib/view.js:126:8)
at tryRender (/Users/macuser/NodeJS/hello/node_modules/express/lib/application.js:639:10)
at EventEmitter.render (/Users/macuser/NodeJS/hello/node_modules/express/lib/application.js:591:3)
at ServerResponse.render (/Users/macuser/NodeJS/hello/node_modules/express/lib/response.js:960:7)
at /Users/macuser/NodeJS/hello/index.js:8:9
at Layer.handle [as handle_request] (/Users/macuser/NodeJS/hello/node_modules/express/lib/router/layer.js:95:5)
at next (/Users/macuser/NodeJS/hello/node_modules/express/lib/router/route.js:131:13)
at Route.dispatch (/Users/macuser/NodeJS/hello/node_modules/express/lib/router/route.js:112:3)
at Layer.handle [as handle_request] (/Users/macuser/NodeJS/hello/node_modules/express/lib/router/layer.js:95:5)
at /Users/macuser/NodeJS/hello/node_modules/express/lib/router/index.js:277:22
我已经在views/中设置了frontPage.html，并且已经从NPM(npm install mu2 --save)安装了Mustache.
怎么了?
I already setup frontPage.html inside views/ and I already installed Moustache from NPM (npm install mu2 --save).
What's wrong with it?
推荐答案
我最终绕过Express的模板系统，并使用Mustache自己的compileAndRender().像这样:
I ended up bypassing Express' template system and use Mustache's own compileAndRender(). Like this:
var express = require('express');
var app = express();
var mu2 = require('mu2');
mu2.root = __dirname + '/views';
app.get('/', function (req, res) {
var htmlStream = mu2.compileAndRender('frontPage.html', {ip: req.ip});
htmlStream.pipe(res);
});
app.listen(8080, function () {
console.log("Listening on port 8080");
});
现在可以使用.
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