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Questions tagged [real-time-updates]

279 questions
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Firestore onSnapshot duplicates all DOM elements instead of replacing/updating them

I am updating the information in my database and I want that data to update the Cards I am using to display the data RealTime. This works fine but when I make a change to the database the cards I am using to display the info just duplicate on every…
Yewla
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Update Excel Spreadsheet with Real-Time Python Data

I'm quite new to Python and have mostly targeted learning the language exactly to automate some processes and update / populate excel spreadsheets with realtime data. Is there a way (e.g. through openpyxl) to update specific cells with data that's…
phk31
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Get Realtime-Update of an Array of DocumentReferences

I'm writing a Game, where the users can join a Lobby to play together. Therefore I update the Lobby and the Users, stored in Firestore. The Lobbys in the Lobby-Collection contain an Id, creator, creationDate and an array of all Members…
Christian Holländer
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Is there an R function for refreshing a datafile or dataframe to pick up recently updated data automatically?

I have a csv file where data is getting generated for every 15 mins. I need R programming to use reactivefilereader function to identify latest data feed and update automatically. But what is the problem with the code below ? library(readr) housing…
Mr.KT
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Get only several data using realtime update firestore

Get only several data at first load using listener for realtime update in firestore. When i using limit (example: 15 data), after those data the listener won't get another data for realtime update. Get only 15 data at first load and only listen to…
Rasyadh Abdul Aziz
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Real time loop control in python

I am working on a project to control switching of gates for an inverter with python in Raspberry Pi. There is this sequence of pins I need to turn off and on in a cycle to achieve this with some time delay inbetween for adjusting the frequency. But…
Aron
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How to update values within an object in realtime with socket.io

I'm trying to create a stock trading simulator with react, node, and socketIO, and I need to save the stocks that a user has in an object like this: var user = { name: "patrick", portfolio: [ { ticker: "AAPL", …
Patrick Hammet
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Display a Video Stream in an App Designer Figure

I am developing a simple app in App Designer and I have been struggling with including a video stream from a webcam. I have come across the following post, but so far I have been unsuccessful in getting my app to work:…
Enrico Anderlini
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2 answers

How to Update live data from socket on browser with DataTables without ajax calls?

I built a bridge between socket and websocket with webtcp. Then i was able to display the data on browser, however it is not updating in real time unless i refresh the whole page. It needs to be updated constantly showing all the data. This is how i…
Asyl
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Firebase Realtime returns null but data exists

I'm facing an issue regarding the Firebase Realtime database and in particular the value event listener which fires more than once .Seems that when the Internet state changes from on to off several times and the device finally has stable connection…
metodieva
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using Socket.io with React and Redux to handle a hundred of updates per second

I have a list of items which are objects of data from the server (about 1000) that I need to sort, filter, put into Redux and connect to a React table component. I'm using socket.io to listen for updates which sends these individual data objects…
user8732804
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Why is this code returning blank? In both the command line and inside the text box? No errors, but also no data

I am trying to create a program that collects a count total of the number of unread messages inside an inbox. I am having no issues with collecting the data, the problem I have is in displaying it in real-time into a text box so that when a new mail…
Smokeyparkin
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Firestore real-time-updates in c#

I'm trying to subscribe to real-time updates with Cloud Firestore in c# using Google.Cloud.Firestore.V1Beta1. I'm using the following code, which receives updates for a short time, until the stream is closed. Has anyone got FirestoreClient.Listen to…
Evan Moore
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How Stack overflow updates questions with new activity

I was on a stack overflow page, without refreshing the page shows me that {number} questions with new activity, but if i check in Browser network panel, I can't see anything. How they keep on updating this count, without calling any background…
Anil kumar
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Using GTFS data, how should i extend it with realtime gtfs?

I am building an application using GTFS data. I am a bit confused when it comes to GTFS-realtime. I have stored all the GTFS information in a database(Mongo), I am able to retrieve stop times of a specific bus stop. So now I want to integrate…
Timothy Leung
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