如果我对其中一个进行排序，就会显示两个错误，另一个弹出TypeError:cart不是post方法中的构造函数，cart

Question

类型错误：cart不是构造函数已经使用这些技术一年多了，从未遇到过这样的问题，所以请帮助

router.post('/add-to-cart', isLoggedIn, function (req, res, next) {
cart = new cart({
price: req.body.price,
adult: req.body.adult,
children: req.body.children,
kids: req.body.kids,
arrival: req.body.arrival,
departure: req.body.depart,
totalprice: req.body.subtotal,
user_id: req.body.userid,
id: req.body.productId,
});
console.log("cart1592: " + cart);
cart.save(function (err) {
if (err) {
console.log('error', 'Error: ' + err.message);
console.log("cart1596: " + cart);
return res.redirect('/');
}
// res.flash('thanks for your feedback');
console.log("cart1600: " + cart);
return res.redirect('/shopping-cart');

});
});

在此处导入

var router = express.Router();
var cart = require('../models/cart');
var review = require('../models/reviews');

cart.find不是一个功能已经使用这些技术一年多了，从未遇到过这样的问题，所以请帮助

router.get('/shopping-cart', isLoggedIn, function (req, res, next) {
var slug3 = req.params.slug3;
qryFilter = { "_id": req.user._id };

var user = req.user._id;
console.log(user);
cart.find(function (err, cart) {
console.log(cart);
event = new Event({
namespace: 'products',
person: {
id: req.user._id,
first_name: req.user.first_name,
last_name: req.user.last_name,
email: req.user.email,
},
action: 'view',
thing: {
type: "product",
id: product._id,
name: product.name,
category: product.category,
Product_Group: product.Product_Group
}
});
event.save(function (err, eventId) {
if (err) {
return -1;
}
res.send(cart);
});
});
});

这是我的模式已经使用这些技术一年多了，从未遇到过这样的问题，所以请帮助

var mongoose = require('mongoose');
var Schema = mongoose.Schema;
var schema = new Schema({
price: {
type: Number,
required: false
},
adult: {
type: Number,
required: false
},
children: {
type: Number,
required: false
},
id: {
type: String,
required: false
},
kids: {
type: Number,
required: false
},
arrival: {
type: Date,
required: false
},
user_id: {
type: String,
required: false
},
departure: {
type: Date,
required: false
},
totalprice: {
type: Number,
required: false
},
});
module.exports = mongoose.model('cart',schema);

Answer 1

错误已解决原因是在声明var cart时，它覆盖了我为cart所做的另一个声明，因此它显示cart不是constructor。所以要么是这个，要么是那个，其中一个只起作用，每次都有一个条件失败，这要归功于响应