我已经使用mongodb成功建立了一个数据库,并且我已经设法在我的集合中添加新条目。但是,当我使用类似的方法删除时,没有任何反应。
Express.js代码
router.post('/deleteproject', function(req, res) {
var MongoClient = mongodb.MongoClient;
var url = 'mongodb://localhost:27017/plugd';
MongoClient.connect(url, function(err, db) {
if (err) {
console.log("Unable to connect to server", err);
} else {
console.log('Connected to server');
var collection = db.collection('projects');
collection.remove(
{_id: new mongodb.ObjectID(req.body)}, function(err, result) {
if (err) {
console.log(err);
} else {
res.redirect("thelist");
}
db.close();
});
}
});
});
翡翠代码
h2.
ul
Projects
each project, i in projectlist
#project_list_item
a(href='#') #{project.owner} - #{project.project}
p #{project.ref1}
p #{project.ref2}
p #{project.ref3}
form#form_delete_project(name="deleteproject", method="post", action="/deleteproject")
input#input_name(type="hidden", placeholder="", name="_id", value="#{project._id}")
button#submit_project(type="submit") delete
答案 0 :(得分:1)
我明白了。这是我使用express.js中的路由器从mongodb集合中删除数据的修复程序。
<强> Express.js 强>
router.post('/deleteproject', function(req, res) {
var MongoClient = mongodb.MongoClient;
var ObjectId = require('mongodb').ObjectId;
var url = 'mongodb://localhost:27017/app';
MongoClient.connect(url, function(err, db) {
if (err){
console.log('Unable to connect to server', err);
} else {
console.log("Connection Established");
var collection = db.collection('projects');
collection.remove({_id: new ObjectId(req.body._id)}, function(err, result) {
if (err) {
console.log(err);
} else {
res.redirect("thelist");
}
db.close();
});
}
});
});
翡翠代码
extends layout
block content
h2.
Projects
ul
each project, i in projectlist
#project_list_item
a(href='#') #{project.owner} - #{project.project}
p #{project.ref1}
p #{project.ref2}
p #{project.ref3}
form#form_delete_project(name="deleteproject", method="post", action="/deleteproject")
input#input_name(type="hidden", placeholder="", name="_id", value="#{project._id}")
button#submit_project(type="submit") delete
jade文件呈现为名为“thelist”的页面,列出了集合中的每个项目。
表单部分处理列表中每个项目的删除功能。
只要我保持Jade的缩进快乐,这对我有用:)
答案 1 :(得分:0)
试试这个,看它是否有效:
router.post('/deleteproject', function(req, res) {
var MongoClient = mongodb.MongoClient;
var url = 'mongodb://localhost:27017/plugd';
MongoClient.connect(url, function(err, db) {
if (err) {
console.log("Unable to connect to server", err);
} else {
console.log('Connected to server');
var collection = db.collection('projects');
collection.remove(
{_id: req.body}, function(err, result) {
if (err) {
console.log(err);
} else {
res.redirect("thelist");
}
db.close();
});
}
});
});
由于您使用的是MongoDB的Node.js本机驱动程序,因此您无需在ObjectId中编组_id。您可以直接将_id指定为string