eliminate the firebase firestore query using onSnapshot

Seeking assistance with the following code snippet:

firebase.firestore()
  .collection("chatrooms")
  .doc(`${chatId}`)
  .collection(`${chatId}`)
  .orderBy("timestamp")
  .limit(50).onSnapshot((snapshot)  => {
    //performing operations on snapshot.val()
  })

I have implemented this listener in my firestore setup and it consistently fetches only the latest 50 documents. My query is: If I want to remove this listener, can I use the following approach?:

firebase.firestore().collection("chatrooms").doc(`${chatId}`).collection(`${chatId}`).off();

I am uncertain if solely invoking .off() on the reference will suffice in this scenario. Usually it works, but due to my ordered and limited query, I wanted to confirm.

javascriptfirebasereact-nativegoogle-cloud-firestore

Answer №1

Unfortunately, the off() method cannot be found on a CollectionReference. However, you can utilize the onSnapshot method which returns a function that allows you to remove the listener regardless of the query used.

const unsubscribe = firebase.firestore()
  .collection("chatrooms")
  .doc(`${chatId}`)
  .collection(`${chatId}`)
  .orderBy("timestamp")
  .limit(50).onSnapshot((snapshot)  => {
    //perform operations with snapshot.val()
  })

//execute this code to stop the listener
unsubscribe()

If there is a need to unsubscribe from the listener in a different component, you can pass this function as a prop.

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

Oops! The function gave back an undefined result when it was supposed to return either a

I have implemented a pubsub function using Firebase functions to perform certain operations periodically in Firestore. To achieve this, I need to send a request to a third-party API to retrieve the latest data and then insert that data into the appropriate ...

node.jsfirebaseexpressgoogle-cloud-firestoregoogle-cloud-functions

Refresh the page to change the section using vue.js

I am currently working on a website using Laravel and Vue.js. I require two separate sections for the site: Site: https://www.example.com Admin: https://www.example.com/admin Within the resource/js/app.js file, I have included the main components as fo ...

javascriptvue.jsvue-component

jqueryajax function returns a boolean value upon completion

Recently, I developed a container method to handle an ajax request: function postRating(formData) { $.ajax({ type: "POST", url: '/api/ratings', data: formData }) .done(function () { return true ...

javascriptjqueryajax

What methods do publications use to manage HTML5 banner advertisements?

We are working on creating animated ads with 4 distinct frames for online magazines. The magazines have strict size limits - one is 40k and the other is 50k. However, when I made an animated GIF in Photoshop under the size limit, the image quality suffered ...

javascripthtmlanimationgifanimated-gif

What is the best way to shrink or enlarge individual sections of the accordion?

Exploring AngularJs Accordions I'm struggling to understand how to control accordions in AngularJS. I have a step-by-step module set up as an accordion and I want to collapse one part while expanding another based on completion. Here is the accordion ...

javascriptangularjsaccordion

AngularJS's support for html5mode on GitHub pages is now available

Is it feasible for GitHub pages to accommodate AngularJS in html5mode? I came across a source online suggesting that it can be done with a fallback page for 404 errors. However, this solution seems flawed as it may result in multiple 404 errors, which wou ...

javascriptangularjshtmlgithub-pages

Adding JavaScript files to a project in Ionic2 with Angular2 integration

I'm looking to incorporate jQuery into my Ionic2 app, which requires loading several JavaScript files: <script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.11.0/jquery.min.js"></script> <script type="text/j ...

javascriptjqueryangularionic2calendar

Steps for resolving the "endless redirection loop" issue in Sharepoint

I am currently learning Javascript and working on setting up a multi-language Sharepoint site. I am trying to implement a code into each page that checks the user's email and the language in the URL (Portuguese or Spanish) and then redirects according ...

javascriptjqueryajaxhttp-redirectsharepoint

I am wondering why the vue-router is only changing the URL and not displaying the corresponding view component

I've encountered an issue where the vue-router is only toggling the URL when clicking on the navigation link, but not updating the view component. Surprisingly, there are no apparent errors in my code. Despite this, the console indicates that the Home ...

javascriptvue.jsvuexvue-router

Navigating through a collection of objects

My array consists of objects, each having the following structure: var car = { make: "", model: "", price: "" } I am attempting to iterate through each object and check if a specific property is defined in this manner: for (i = 0; i <= ...

javascriptarraysloopsobject

Tips for managing Express.js callbacks and modifying an object's property from within a function

I am currently working with two JavaScript files. I have successfully retrieved data from MongoDB using the method bookDao.getActiveBookByCategoryId(). The Issue I Am Facing: Within the categoryDao.js file, I am attempting to update the resultJson.book_c ...

javascriptnode.jsmongodbexpresscallback

Why is my jQuery blur function failing to execute?

Currently, I am working with HTML and the jQuery library to avoid core JavaScript in order to maintain consistency. In my project, there are 3 fields and when a user clicks on field1 and then somewhere else, I want only field1's border to turn red. T ...

javascriptjquery

When a client sends a GET request to the server, an error occurs due to the absence of 'Access-Control-Allow-Origin' header in

I am encountering an issue with my node/express js application running on localhost while making a 'GET' request to Instagram's api. The error message I keep receiving is: XMLHttpRequest cannot load https://api.instagram.com/oauth/authorize ...

javascriptjquerynode.jsexpressinstagram-api

Using Typescript, Angular, and Rxjs to retrieve multiple HttpClients

I am looking to send get requests to multiple endpoints simultaneously, but I want to collect all the responses at once. Currently, this is how a single endpoint request is handled: public getTasks(): Observable<any> { this.logger.info('Ta ...

javascriptangulartypescriptrxjs

React-highlightjs failing to highlight syntax code properly

I'm currently using the react-highlight library to highlight code snippets in my next.js application. However, I've encountered an issue with the code highlighting when using the a11y-dark theme. https://i.stack.imgur.com/ip6Ia.png Upon visitin ...

javascriptreactjsnext.jssyntax-highlighting

I am struggling to grasp the concept of how the g flag in JavaScript's string.match(regexp) method operates

In the JavaScript book "The Good Parts", there is an explanation of the method string.match(regexp): The match method works by comparing a string with a regular expression. Its behavior varies based on whether or not the g flag is present. Without the g ...

javascriptregexstringmatchgflags

What methods can be used to determine if a webm file contains audio or video content?

In the process of creating an uploader using ReactJS, I encounter an issue related to identifying whether uploaded files are video or audio. Specifically, when users upload audio files with a .webm extension (e.g., music.webm) and the MIME type is set as & ...

javascriptreactjsmime-typeswebm

Refresh the Vuex store using the main process of Electron

Is there a way to update a vuex store by committing changes from the main process? Here is an example: In the main thread: import store from '../store' ipc.on('someevent', (event, args) => { // do something with args store ...

javascriptvue.jsfrontendelectron

Do we need to wait a considerable amount of time for an asynchronous function to run in a request?

I have a specific request that I need to address. The first snippet of code shows a function called handleUpdate1 which uses async/await to run a function named _asyncFuncWillRun10Minutes, causing the client to wait approximately 10 minutes for a response ...

javascriptnode.jsexpressasync-await

"Exploring the world of interactive external links within a Facebook canvas app

Within my Facebook canvas application, I have links that need to open in a new tab or page when clicked by users. How can I achieve this? To redirect users to the Facebook login page, I am currently using JavaScript location. A few months ago, I came acr ...

javascripthtmlfacebookhyperlinkfacebook-canvas