【发布时间】：2016-03-16 16:05:23
【问题描述】：
该错误导致我的网页无法呈现。如标题所述，错误在于styles.css，当我取出这个文件时，我没有收到任何错误。
styles.css 包含在单独的headers.ejs 文件中，该文件添加到所有页面中，但只有一个路径显示错误（/cats/new）。我在路线周围放置了一些日志，似乎当我输入/cats/new/ 时，我会自动重定向到新路线（get /cats/:id）。我想知道这是否是错误的原因？
我在下面附上了我的路线和完整的错误消息：
路线：
var express = require('express');
var router = express.Router();
var User = require('../models/user.js');
var Cat = require('../models/cat.js');
var Comment = require('../models/comment.js');
//middleware
function isAuthenticated(req,res,next) {
req.isAuthenticated() ? next() : res.redirect('/login');
}
router.get("/", function(req,res) {
res.redirect("cats");
});
router.get('/cats', function(req,res) {
Cat.find({}, function(err, cats) {
if (err) {
console.log(err);
} else {
res.render('cats', {cats: cats});
}
});
});
router.get('/cats/new', isAuthenticated, function(req,res) {
console.log('went to /cats/new');
res.render('new', {user: req.user});
});
router.post('/cats', isAuthenticated, function(req,res) {
console.log('went to post /cats');
var name = req.body.name;
var image = req.body.url;
var owner = req.user.username
var description = req.body.description;
cat = new Cat({
name: name,
image: image,
owner: owner,
description: description
});
cat.save();
User.findById(req.user._id, function(err, user) {
if (err) {
console.log(err);
} else {
user.cats.push(cat);
user.save();
}
})
res.redirect('cats');
});
router.get('/cats/:id', function(req,res) {
var id = req.params.id;
Cat.findById(id).populate('comments').exec(function(err, cat) {
if (err) {
console.log('entering get /cats/:id');
console.log(err);
} else {
console.log('no errror yet');
console.log(cat.comments);
res.render('show', {cat:cat});
}
});
});
router.post('/cats/:id', isAuthenticated, function(req,res) {
console.log(isAuthenticated);
var id = req.params.id;
Cat.findById(id, function(err, cat) {
console.log('findById running');
if (err) {
console.log(err);
console.log('err finding cat');
res.redirect('/cats');
} else {
console.log('before Comment.create');
Comment.create(req.body.comment, function(err, comment) {
console.log('after Comment.create');
if (err) {
console.log(err);
} else {
console.log('right after 2nd else');
comment.author.id = req.user._id;
console.log(req.user._id);
console.log(req.user.username);
comment.author.username = req.user.username;
comment.cat = id;
comment.save();
console.log('after saving comment');
cat.comments.push(comment);
cat.save();
console.log('saved cat');
User.findById(req.user._id, function(err, user) {
if (err) {
console.log(err);
} else {
user.comments.push(comment);
user.save();
console.log('saved user');
}
});
console.log(comment);
res.redirect("/cats/" + cat._id);
}
});
}
});
});
router.get('/cats/:id/edit', function(req,res) {
var id = req.params.id;
Cat.findById(id, function(err, cat) {
if (err) {
console.log(err);
} else {
res.render('edit.ejs', {cat:cat});
}
});
});
router.put('/cats/:id', function(req,res) {
console.log('beginning /cat/:id');
Cat.findByIdAndUpdate(
req.params.id, req.body.cat, function(err, updatedCat) {
if (err) {
console.log(err);
} else {
console.log('------------ req.body.cat');
console.log(req.body.cat);
console.log('------------ updated cat');
console.log('updated cat');
res.redirect('/cat/' + req.params.id);
console.log('not redirecting?');
}
});
router.delete('/cats/:id',isAuthenticated, function(req,res) {
var id = req.params.id;
console.log('YOU ARE TRYING TO DESTROY A CAT!');
Cat.findByIdAndRemove(id, function(err) {
if (err) {
console.log(err);
res.redirect('/user');
} else {
res.redirect('/user');
}
});
})
});
module.exports = 路由器；
错误：
entering get /cats/:id
{ [CastError: Cast to ObjectId failed for value "styles.css" at path "_id"]
message: 'Cast to ObjectId failed for value "styles.css" at path "_id"',
name: 'CastError',
kind: 'ObjectId',
value: 'styles.css',
path: '_id',
reason: undefined }
【问题讨论】：
标签： javascript node.js