我想让关键项目在该集合中独一无二,但我无法正常工作,我在这里发现了类似的问题。
task.js
function make(Schema, mongoose) {
var Tasks = new Schema({
project: { type: String, index: { unique: true, dropDups: true }},
description: String
});
mongoose.model('Task', Tasks);
}
module.exports.make = make;
test.js
var mongoose = require('mongoose');
mongoose.connect('mongodb://localhost/rss');
var Schema = mongoose.Schema
, ObjectId = Schema.ObjectId;
require('./task.js').make(Schema, mongoose);
var Task = mongoose.model('Task');
var newTask = new Task({
project: 'Starting new project'
, description: 'New project in node'
});
newTask.save(function(err) {
if (err) console.log('Error on saving');
});
mongoose.disconnect();
当我使用 Node test.js 运行应用程序时,仍然会创建重复项。
MongoDB shell version: 2.0.2
connecting to: rss
> db.tasks.find()
> db.tasks.find()
{ "project" : "Starting new project", "description" : "New project in node", "_id" : ObjectId("4f21aaa3d48d4e1533000001") }
{ "project" : "Starting new project", "description" : "New project in node", "_id" : ObjectId("4f21aaa4d9a8921a33000001") }
{ "project" : "Starting new project", "description" : "New project in node", "_id" : ObjectId("4f21aaa57ebeea1f33000001") }
// 编辑仍然存在同样的问题,这就是我尝试做的
删除 db.tasks.drop() 集合
重新启动 mongo sudo 停止 mongodb 并启动 mongodb,再次运行程序,仍然存在同样的问题,它如何允许索引上的重复数据?