ANYONE TO HELP ME ON HOW TO CREATE AN AUTOMATIC NOTIFICATION SYSTEM THAT SENDS A MESSAGE WHENEVER AN OBJECT IS CREATED OR MODIFIED

[Byansi Samuel]

My views
from django.shortcuts import render def auto_notification(request): return render (request, "user/dashboard.html")

My models
from django.db import models from django.contrib.auth.models import User

#articles model

class Articles(models.Model):
title = models.CharField(max_length=300) date= models.DateField() author=models.ForeignKey(User, on_delete=models.CASCADE) body=models.TextField()

def __str__(self) -> str:
return self.title

#games model

GAME_TYPE=( ("action", "action"), ("adventure", "adventure"), ("racing", "racing"), ("puzzle", "puzzle"), )

MOV_TYPE=( ("action", "action"), ("adventure", "adventure"), ("sci-fi", "sci-fi"), ("horror", "horror"), ("drama", "drama"), )

GAME_OS=( ("Windows", "Windows"), ("Android", "Android"), )

class Games(models.Model): name=models.CharField(max_length=50) type=models.CharField(max_length=40, choices=GAME_TYPE) os=models.CharField(max_length=15, choices=GAME_OS) img=models.ImageField() developer=models.CharField(max_length=50) version=models.CharField(max_length=10) ratings=models.CharField(max_length=10) description=models.TextField()

def __str__(self) -> str:
return self.name class

Movies(models.Model): name=models.CharField(max_length=50) type=models.CharField(max_length=40, choices=MOV_TYPE) description=models.TextField() released=models.DateField()

def __str__(self) -> str:
return self.name

I have three models below, but l like to create a Notification System to send a message to a User whenever ;
1. An object is created in all those models
2. An object is modified in all those models

And l would like to add trick that it sends the Notification Message after 15 minutes of publiction or creation.

And I would like to pass the following data if available in the object ;
1. the Name of the Object,
2. the Image of the Object, and
3. the type of the Object.

Lastly I would like to add a :
1. Notification DELETE function, that gives User a way to delete that Message , not to appear in his or notification section again.

2. Mark as Read function, that changes the Massage Div Color

3. A notification Barge that displays the UNREAD Messages.

Am requesting anyone to help me Because Am stuck , I have no where to Start from. I will be on waiting your guidelines.

[ivan harold]

https://stackoverflow.com/questions/14543824/django-get-notified-of-all-changes-in-database

check this one out, you might find some hints or answers.

[Andréas Kühne]

First of all - notification - what do you mean by notification?

If you mean that the user should be notified in the instance when someone creates / updates / deletes your models - you will need to have either server side events or websockets to communicate with the frontend. You could also poll the server (for example every 5 minutes) to check for new messages. These solutions would require that you have some javascript on the frontend.

To get this working on the backend - you would then need some sort of changes in the save method to send the notifications to the frontend. This could be as simple as creating a Notification model and then just creating a notification every time you update a model.

Regards,

Andréas

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[Michal Plsek]

Just register post_update signal with the Model you want to "watch" to be created/updated, and in optimal case send message to some asynchronous queue, which will take message 15 minutes late and processes it by creating Notification object. For example async queue = aws sqs, they even support 15min delay you want.

Dne čt 31. 8. 2023 22:11 uživatel Andréas Kühne <andrea...@hypercode.se> napsal:

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