首页 \ 问答 \ 如何在angularjs和mongoose中切换多个表(文档)(How to switch among multiple tables (documents) in angularjs and mongoose)

如何在angularjs和mongoose中切换多个表(文档)(How to switch among multiple tables (documents) in angularjs and mongoose)

我的目标是让mongoDB具有多个表(文档集合),每个用户都有一个表。 那么如何在运行时在多个表之间“切换”(特定用户登录后是否知道特定表)? 我把这段代码剪掉了......

var mongoose = require('mongoose'), Schema = mongoose.Schema;

var TicketSchema = new Schema({
  Unit_descriptor: String,
     ...
  Total_tons: Number
}, { strict: false });

module.exports = mongoose.model('tickets_user1', TicketSchema);

...我希望能够为当前登录的用户切换表格,例如:表格可以使用上面代码中的用户名后缀。

我试图从控制器和交换表创建稍后调用的导出函数,如下所示:

var auth = require('../../auth/auth.service.js');
...
module.exports.initTable = function initTable() {
    module.exports = mongoose.model('tickets_user2', TicketSchema);
};

...没有交换表,user1的数据仍然存在。

那么,我怎么能实现这个目标呢? 谢谢。


My goal is to have mongoDB with multiple tables (collections of documents), each per some user. So how can I "switch" among multiple tables at runtime (particular table is known after particular user is logged in)? I have this code snipped...

var mongoose = require('mongoose'), Schema = mongoose.Schema;

var TicketSchema = new Schema({
  Unit_descriptor: String,
     ...
  Total_tons: Number
}, { strict: false });

module.exports = mongoose.model('tickets_user1', TicketSchema);

...and I want to be able to switch table for currently logged user, for example: tables could have suffix with username as in code above.

I tried to create exported function called later from controller and swap table, like this:

var auth = require('../../auth/auth.service.js');
...
module.exports.initTable = function initTable() {
    module.exports = mongoose.model('tickets_user2', TicketSchema);
};

...which does not swap tables, user1's data are still in place.

So, how could I achieve this? THX.


原文:https://stackoverflow.com/questions/32440606
更新时间:2023-07-20 10:07

最满意答案

你得到一个JSON字符串,所以你可以尝试

  let jsonstring = "\"asdf\""
  let data = jsonstring.data(using: .utf8)

do {
     if let str = try JSONSerialization.jsonObject(with: data!, options:.allowFragments) as? String {
        print(str)
     }

   }
   catch let caught as NSError
   {
   }

You get a json string so you can try

  let jsonstring = "\"asdf\""
  let data = jsonstring.data(using: .utf8)

do {
     if let str = try JSONSerialization.jsonObject(with: data!, options:.allowFragments) as? String {
        print(str)
     }

   }
   catch let caught as NSError
   {
   }

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