Retrieve the ID from either a search query or an insertion operation in MongoDB

I find myself frequently using this particular pattern. It feels a bit cumbersome to make two MongoDB calls for the task, and I am curious if there is a more efficient way to achieve this. My goal is to obtain the ID of an existing document, or.. create a new one and use its ID. Is it possible to accomplish this in a single call using Meteor?

var thingId;
var existingDoc = Things.findOne({name:'Thing One'});
if (existingDoc) {
    thingId = existingDoc._id;                              
} else {
    thingId = Things.insert({name:'Thing One'});
}
return thingId;
javascriptmongodbmeteor

Answer №1

One way to achieve this is through the findAndModify method.

A convenient package exists that offers this feature, although personal implementation preferences might vary.

$ meteor add fongandrew:find-and-modify

Here is the GitHub repository for more information.

This package extends the functionality of the Mongo.Collection prototype and ensures asynchronous operation via fibers on the server side.

If you pass true as the second parameter, you can retrieve the raw output.

Check out this quick example involving an insert and an update:

> const Foo = new Mongo.Collection("foo");
> Foo.insert({foo: 1});
'6Mkpdjf3sXDZy6ioQ'
> Foo.findAndModify({query: {foo: 1}, update: {$set: {bar: 1}}, upsert: true}, true )
{ lastErrorObject: { updatedExisting: true, n: 1 },
  value: { _id: '6Mkpdjf3sXDZy6ioQ', foo: 1 },
  ok: 1 }
> Foo.findAndModify({query: {foo: 2}, update: {$set: {bar: 2}}, upsert: true}, true )
{ lastErrorObject: { updatedExisting: false, n: 1, upserted: 'y4eQzLWqCyBNr2WW9' },
  value: null,
  ok: 1 }
> Foo.findOne({foo: 2});
{ _id: 'y4eQzLWqCyBNr2WW9', foo: 2, bar: 2 }
>

To optimize the process, additional steps may be necessary, especially if consistent retrieval of the _id is required.

Answer №2

While an upsert may not provide you with the _id value, you can still utilize it to streamline your code like this:

Items.upsert({label:'Item One'});
 return Items.findOne({label:'Item One')})._id;

Similar questions

If you have not found the answer to your question or you are interested in this topic, then look at other similar questions below or use the search

Exploring JavaScript and Node.js: Deciphering the choice of prototype.__proto__ = prototype over using the

Currently exploring the Express framework for node.js and noticed that all the inheritance is achieved through: Collection.prototype.__proto__ = Array.prototype; Wouldn't this be the same as: Collection.prototype = new Array; Additionally: var ap ...

javascriptnode.jsexpress

Adding up values of objects in a different array using Vue.js

Recently, I started using VueJs and encountered an object that contains arrays. One of the tasks I need to accomplish is to display the total sum of all amounts in one of the columns of the table. Here is my table structure: < ...

javascriptvue.js

What is the method for executing a search query using mongo and mongoose in conjunction with react.js?

I'm facing some challenges with setting up a search component for this project. The main concept is to have the search query input a name, which will then filter the database to find products that match or are similar to the inputted name. I've ...

reactjsmongodbmongoosesearchmongodb-atlas-search

I'm looking to streamline my code by creating shared functionality across multiple reducers with the help of create

Previously, in the older way of using Redux, we could create a reducer like this - handling different action types but with the same action: export default function authReducer(state = initialState, action) { switch (action.type) { case AUTH_ERROR: ...

javascriptreduxredux-toolkit

Incorporate CSS animations prior to removing an element from an array

Before removing an item from my data table, I want to implement a CSS animation. The deletion is initiated by the @click event. I would like to preview the effect of my animation (class delete_animation) before proceeding with the actual removal. var vm ...

javascriptvue.js

New feature in Safari extension: transferring window object from inject script to global page

Is it possible to transfer the window object from an injected script to a global.html page? I am attempting to pass the window object as part of an object to the global page. However, when I try to dispatch the message from the "load" listener function, i ...

javascriptsafarisafari-extension

What is the best way to update a prop value using a different function?

I have a single component in my NextJs application and I am trying to modify the child prop (referred to as type) of the child component when the <input> element is empty. However, I am facing issues with this task. Can someone please assist me? Tha ...

javascriptreactjsnext.js

Transferring String data between Java and JavaScript using Webview in both directions

I'm currently developing an application that allows two users to communicate via a webview. My goal is to transfer a String variable from JavaScript to Java in order to store it in my SQLite database, and also be able to do the reverse operation as we ...

javascriptjavaandroidwebview

Disabling pointer-events on material-ui textField input is ineffective

I have a material-ui textField input and I want to prevent the user from entering text by setting the css to pointer-events: none. However, this method does not work as expected. While I am aware that I can use the disabled={true} flag to disable the inpu ...

javascriptreactjsmaterial-uipointer-events

Basic AngularJS application, however I am receiving {{this is supposed to be the information}}

Building an angularjs app I have set up an asp.net mvc4 application and integrated the angularjs package using nuget. The Layout.cshtml file has been updated to look like this: <!DOCTYPE html> <html ng-app="myApp"> <head> <meta ...

javascriptasp.net-mvcangularjs

Tips for modifying `sourceMappingURL` in parcel js

Is there a way to manually adjust the path of //# sourceMappingURL in the generated bundle.js? The current configuration in Parcel is causing the path to be incorrect for bundle.js.map. Parcel setup: "scripts": { "watch:js": &quo ...

javascriptnode.jsexpressbundlerparceljs

The fullscreen API allows for the creation of a full-screen element containing internal elements, while also enabling the functionality

Is it possible to utilize the fullscreen API to make any element fullscreen, even if it contains multiple internal elements, while still maintaining the functionality of dropdowns and other custom elements that may be located in different areas of the page ...

javascriptjqueryhtmlcssjquery-ui

Utilizing Async and await for transferring data between components

I currently have 2 components and 1 service file. The **Component** is where I need the response to be displayed. My goal is to call a function from the Master component in Component 1 and receive the response back in the Master component. My concern lies ...

javascripttypescriptangular7

The dynamic alteration of BackgroundImage does not appear to be functioning correctly with tailwind and nextjs

Introduction While working on my weather application using nextJS and TailwindCSS, I encountered a UI issue towards the end of development. Unfortunately, I couldn't resolve this problem alone. My main concern is changing the background image dynami ...

javascriptreactjsnext.jsbackgroundtailwind-css

React does not always remove event listeners when using the useEffect hook's return callback

I have a functionality in my component where it initializes a key event listener. This event is supposed to trigger an API call to fetch random data. useEffect(() => { const keyUpEvent = (event) => { if (event.code === "Enter") { ...

javascriptreactjsreact-hooksdom-events

Java implementation of a Least Recently Used (LRU) eviction policy for MongoDB

As a newcomer to mongoDB, I am currently developing an application that necessitates the implementation of an LRU policy on my collection. Upon researching on the mongoDB site, I found that capped collections only support FIFO. Are there any other types of ...

mongodb

Executing JavaScript function on AJAX update in Yii CGridView/CListView

Currently, I am integrating isotope with Yii for my CListView and CGridView pages to enhance their display. While everything functions smoothly, an issue arises when pagination is utilized, and the content on the page is updated via ajax, causing isotope ...

javascriptphpjqueryajaxyii

What is the process for making changes to Google Sheet information?

Encountering an issue when trying to update data in a Google sheet using Next.js. The error message ReferenceError: row is not defined keeps popping up and I can't figure out where I'm going wrong. Any help in resolving this error would be greatl ...

javascriptgoogle-sheetsnext.jsgoogle-sheets-api

What is the best way to retrieve an ID when parsing JSON recursively?

Could you provide guidance on how to retrieve the IDs of all children when parsing JSON data? I have attempted to use a recursive function, but it seems to be calling infinitely. For reference, here is my code snippet: http://jsfiddle.net/Ds8vQ/ for(var ...

javascriptjqueryjson

Steps to include a border around text and center align it:

As a beginner in Html and CSS, I am trying to create a heading with the text "Women safety" and wrap it with a border. However, when I apply the border to the text, it covers the entire width, extending both left and right. I only want the border to be a ...

javascripthtmlcssborder