app.render [TypeError：无法设置未定义的属性'content']在Node.js中与Gaikan一起使用Express
[英]app.render [TypeError: Cannot set property 'content' of undefined] Using Express with Gaikan in Node.js
问题描述
res.render is working perfectly: 
res.render运行完美：
res.render('main', function(err, html){
// Returns '<html></html>' contained inside of 'views/main.html'
console.log(html);
});
But my app.render: 但是我的app.render：
app.render('main', function(err, html){
// Returns undefined
console.log(html);
});
The error being returned by app.render is: app.render返回的错误是：
[TypeError: Cannot set property 'content' of undefined]
I assume it's trying to set data.content (being part of Gaikan), but I don't know for certain, and I don't know what the problem is. 我假设它正在尝试设置data.content（属于Gaikan），但是我不确定，也不知道问题出在哪里。
Help would be appreciated. 帮助将不胜感激。
Stack trace: http://puu.sh/5qGSq.png 堆栈跟踪： http : //puu.sh/5qGSq.png
Config: 配置：
var express = require('express'),
gaikan = require('gaikan');
app.configure(function() {
app.engine('html', gaikan);
app.set('view engine', 'html');
app.set('views', __dirname + '/views');
gaikan.options.scoped = true;
});
As stated above, the template is just <html></html> . 如上所述，模板只是<html></html> 。
1 个解决方案
解决方案1
1 已采纳 2013-11-23 13:47:31
I think this is an issue of Gaikan making an assumption that isn't true, namely that the options argument – which is passed to the render function – always contains a _locals property. 我认为这是Gaikan做出的假设不正确的问题，即，传递给render函数的options参数始终包含_locals属性。
Looking at the Express code, that property is only guaranteed to exist when calling res.render() , but when you call app.render() you need to explicitly pass it yourself before Gaikan works: 查看Express代码，只有在调用res.render()时，该属性才能保证存在，但是当您调用app.render()您需要在Gaikan工作之前自己明确地传递它：
app.render('main', { _locals : {} }, function(err, html) { ... });
The reason why I couldn't reproduce it is because this issue only occurs when gaikan.options.scoped === true . 我之所以无法复制它，是因为仅当gaikan.options.scoped === true时才会出现此问题。
声明:本站的技术帖子网页，遵循CC BY-SA 4.0协议，如果您需要转载，请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.