你好,我正在开发一个基于Node.js和Express的应用程序。我遇到了一个异常问题,但不知道出了什么问题。在我的看来,一切似乎都很完美。以下是我的异常信息:
500 TypeError: C:\Nodejs\NodejsBlog\apps\blog/views/postdetail.jade:23<br/> 21| .col- md-12 <br/> 22| .posts <br/> > 23| h3= post.title <br/> 24| p=post.body <br/> 25| p tag: <br/> 26| i=post.tag <br/><br/>Cannot read property 'title' of undefined
21| .col-md-12
22| .posts
> 23| h3= post.title
24| p=post.body
25| p tag:
26| i=post.tag
Cannot read property 'title' of undefined
at eval (eval at (C:\Nodejs\NodejsBlog\node_modules\jade\lib\jade.js:152:8), :221:59)
at C:\Nodejs\NodejsBlog\node_modules\jade\lib\jade.js:153:35
at Object.exports.render (C:\Nodejs\NodejsBlog\node_modules\jade\lib\jade.js:197:10)
at Object.exports.renderFile (C:\Nodejs\NodejsBlog\node_modules\jade\lib\jade.js:233:18)
at View.exports.renderFile [as engine] (C:\Nodejs\NodejsBlog\node_modules\jade\lib\jade.js:218:21)
at View.render (C:\Nodejs\NodejsBlog\node_modules\express\lib\view.js:76:8)
at Function.app.render (C:\Nodejs\NodejsBlog\node_modules\express\lib\application.js:504:10)
at ServerResponse.res.render (C:\Nodejs\NodejsBlog\node_modules\express\lib\response.js:798:7)
at C:\Nodejs\NodejsBlog\apps\blog\routes.js:64:14
at callbacks (C:\Nodejs\NodejsBlog\node_modules\express\lib\router\index.js:164:37)
以下是app.post的代码:
app.get('/Post/:id',function(req,res){
var postdata;
var comments;
Post.findOne({_id:req.params.id},function(err, docs){
if(docs) {
postdata=docs;
console.log('Gönderi bulundu');
console.log(docs);
console.log(postdata);
console.log(postdata.title);
} else {
console.log('Gönderi bulunamadı');
}
});
Comment.findOne({postid:req.params.id},function(err, docs){
if(docs) {
console.log('Yorum bulundu');
console.log(docs);
} else {
comments=docs;
console.log('Yorum bulunamadı');
}
});
return res.render(__dirname+"/views/postdetail",{
title: 'adfasdf',
stylesheet: 'postdetail',
post:postdata,
comments:comments
});
});
我的观点是:
extends ../../../views/bloglayout
block js
script(type='text/javascript')
$(function() {
$("#commentform" ).submit(function( event ) {
alert( "Handler for .submit() called." );
$.ajax({
url: '/Post/Comment/',
type: "POST",
data: $('#commentform').serialize(),
success: function(response){
alert('Yorum Kaydedildi');
}
});
event.preventDefault();
});
});
block content
.row
.col-md-12
.posts
h3=post.title
p=post.body
p tag:
i=post.tag
p Anahtar Kelimeler:
b=post.keywords
.row
.col-md-4
h5 Yorum Yap
form#commentform(role='form',action='/Post/Comment', method='post')
input(type='hidden',name='comment[postid]',value=postdata._id)
.form-group
input.form-control(type='email',name='comment[email]',placeholder='E-posta adresi')
.form-group
input.form-control(type='text',name='comment[website]', placeholder='Website')
.form-group
textarea.form- control(type='text',name='comment[content]', placeholder='Yorum')
button.btn.btn- default(type='submit') Ekle
-comments.forEach(function(comment) {
.well
p
b=comment.content
p=comment.email
-})
我检查了我的 MongoDB 数据库,有数据存在。但是不知道为什么 'title' 属性的值是 'undefined',没有任何想法。
'Gönderi bulunamadı'
吗?看起来docs
变量是null
... - MarcoL