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使用 Mongoose 在 ejs 中顯示來自 Mongodb 集合的數據

[英]Displaying data from a Mongodb collection in ejs using Mongoose

我是編程的新手。 我的本地數據庫中有一個名為“Practice”的集合,其中包含“名稱、角色、組織”。 我想弄清楚如何使用貓鼬在 .ejs 文件中打印此信息。

在我的 server.js 中,我有

require('./app/routes.js')(app, passport);     
mongoose.connect(configDB.url); // connect to our database
    var schema = mongoose.Schema;
    mongoose.model('practice', new schema({ Name: String, Role: String, Org: String}),'practice');
    var practice = mongoose.model('practice');
    practice.find({}, function(err, data) { console.log(err, data); });

在路線中,

app.get('/profileface', isLoggedIn, function(req, res) {
        res.render('profileface.ejs', {
            user : req.user
        });
    });

在視圖文件夾中的文件 profileface.ejs 中,我有以下內容可以打印我的“練習”集合中的名稱。

<%= practice.name %>

雖然它在控制台中打印,但當我嘗試訪問 profileface.ejs 時,出現以下錯誤。

ReferenceError: C:\Users\SEESCHU\Desktop\Linneus university\Assignments\302\Assignment 2\code\Test3\views\profileface.ejs:36 34| </div> 35| >> 36| <%= practice.name %> 37| 38| <!-- <div class="text-center"> 39| <p>Assignment for 4ME302</p> practice is not defined at eval (eval at <anonymous> (C:\Users\SEESCHU\Desktop\Linneus university\Assignments\302\Assignment 2\code\Test3\node_modules\ejs\lib\ejs.js:237:14), <anonymous>:30:986) at eval (eval at <anonymous> (C:\Users\SEESCHU\Desktop\Linneus university\Assignments\302\Assignment 2\code\Test3\node_modules\ejs\lib\ejs.js:237:14), <anonymous>:30:1154) at C:\Users\SEESCHU\Desktop\Linneus university\Assignments\302\Assignment 2\code\Test3\node_modules\ejs\lib\ejs.js:250:15 at Object.exports.render (C:\Users\SEESCHU\Desktop\Linneus university\Assignments\302\Assignment 2\code\Test3\node_modules\ejs\lib\ejs.js:288:13) at View.exports.renderFile [as engine] (C:\Users\SEESCHU\Desktop\Linneus university\Assignments\302\Assignment 2\code\Test3\node_modules\ejs\lib\ejs.js:318:20) at View.render (C:\Users\SEESCHU\Desktop\Linneus university\Assignments\302\Assignment 2\code\Test3\node_modules\express\lib\view.js:76:8) at Function.app.render (C:\Users\SEESCHU\Desktop\Linneus university\Assignments\302\Assignment 2\code\Test3\node_modules\express\lib\application.js:504:10) at ServerResponse.res.render (C:\Users\SEESCHU\Desktop\Linneus university\Assignments\302\Assignment 2\code\Test3\node_modules\express\lib\response.js:798:7) at C:\Users\SEESCHU\Desktop\Linneus university\Assignments\302\Assignment 2\code\Test3\app\routes.js:30:7 at callbacks (C:\Users\SEESCHU\Desktop\Linneus university\Assignments\302\Assignment 2\code\Test3\node_modules\express\lib\router\index.js:164:37) at isLoggedIn (C:\Users\SEESCHU\Desktop\Linneus university\Assignments\302\Assignment 2\code\Test3\app\routes.js:116:10) at callbacks (C:\Users\SEESCHU\Desktop\Linneus university\Assignments\302\Assignment 2\code\Test3\node_modules\express\lib\router\index.js:164:37) at param (C:\Users\SEESCHU\Desktop\Linneus university\Assignments\302\Assignment 2\code\Test3\node_modules\express\lib\router\index.js:138:11) at pass (C:\Users\SEESCHU\Desktop\Linneus university\Assignments\302\Assignment 2\code\Test3\node_modules\express\lib\router\index.js:145:5) at Router._dispatch (C:\Users\SEESCHU\Desktop\Linneus university\Assignments\302\Assignment 2\code\Test3\node_modules\express\lib\router\index.js:173:5) at Object.router (C:\Users\SEESCHU\Desktop\Linneus university\Assignments\302\Assignment 2\code\Test3\node_modules\express\lib\router\index.js:33:10)

在過去的 2 天里,我一直試圖通過谷歌搜索來解決這個問題,但現在我放棄了。 如果您能幫助我,我將不勝感激。

額外在編程中,您想使代碼井井有條。

app文件夾中創建一個文件,例如PracticeModel.js,然后在其中移動模式邏輯

var PracticeSchema = new mongoose.Schema({ 
    Name: String, 
    Role: String, 
    Org: String
});

module.exports = mongoose.model('practice', PracticeSchema, 'practice');

routes.js中 ,在頂部包括新創建的文件

var PracticeModel = require('./PracticeModel.js');

您的問題您需要(1)在路由處理程序內移動查詢,並且(2)將結果集data傳遞給視圖

app.get('/profileface', isLoggedIn, function(req, res) {
    // mongoose operations are asynchronous, so you need to wait 
    PracticeModel.find({}, function(err, data) {
        // note that data is an array of objects, not a single object!
        res.render('profileface.ejs', {
            user : req.user,
            practices: data
        });
    });
});

在您的個人資料profileface.ejs中 ,您需要遍歷傳遞的實踐數組

<% practices.forEach(function (practice) { %>
    <%= practice.Name %> <!-- note you defined the field as Name not name -->
<% }) %>

更改后,您的server.js將如下所示

mongoose.connect(configDB.url);
require('./app/routes.js')(app, passport);     

閱讀有關同步與異步的文章 您在Node.js中所做的大多數事情通常都是異步的。

嗨,我遇到了同樣的問題,所以我做了這個並且它奏效了

collection(users).find({}, (err, found) => {
 if(err){
 console.log(err)
 }else{
 res.render("Dashboard", {DataFound: found})
 }
})

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