Node.js findByID不是一个函数
列表项Node.js findByID不是一个函数,node.js,express,mongoose,Node.js,Express,Mongoose,列表项 var express = require("express"); var app = express(); var Mongoose = require("Mongoose"); Mongoose.connect("mongodb://localhost/YelpCamp_app"); var YelpCampSchema = new Mongoose.Schema({ name:String, image:String, description:String });
var express = require("express");
var app = express();
var Mongoose = require("Mongoose");
Mongoose.connect("mongodb://localhost/YelpCamp_app");
var YelpCampSchema = new Mongoose.Schema({
name:String,
image:String,
description:String
});
var YelpCamp = Mongoose.model("YelpCamp",YelpCampSchema);
app.get('/campgrounds/:id',function(req,res){
YelpCamp.findByID(req.params.id, function(err,campground) {
if(err) {
console.log("error");
} else {
res.render("show.ejs");
}
});
});
我得到的错误是findByID不是函数
findByID
不是findByID
app.get('/campgrounds/:id',function(req,res){
YelpCamp.findById(req.params.id, (err,campground) => {
if(err) {
console.log("error");
} else {
res.render("show.ejs");
}
});
});
更多信息请参见:您应该要求使用“猫鼬”而不是“猫鼬”。之后,您可以使用findById检索单个YelpCamp,如下所示:
var express = require("express");
var app = express();
const mongoose = require('mongoose');
mongoose.connect("mongodb://localhost/YelpCamp_app");
const YelpCampSchema = mongoose.Schema({
name:String,
image:String,
description:String
});
var YelpCamp = mongoose.model("YelpCamp",YelpCampSchema);
app.get('/campgrounds/:id',function(req,res){
YelpCamp.findById(req.params.id)
.then(data => {
if(!data) {
console.log("data not found");
}
res.render("show.ejs");
}).catch(err => {
console.log("error");
});
});
var mongoose=require('mongoose')
。这不是大写的M
。没有解释的答案有什么意义?我们应该猜你改变了什么吗?@jfriend00他改变了他说的“猫鼬”而不是“猫鼬”。无论如何,解决方案是找到的,而不是像张当所说的那样找到的