Exception Handling In Django & Python Using Decorators

# Importing necessary modules from Django from django.db import models # Defining a Django model for Users class Users(models.Model): pass # Placeholder, as the Users model does not have any fields defined  # Defining a Django model for ErrorLogs class ErrorLogs(models.Model): # Defining a foreign key relationship with the Users model  user = models.ForeignKey( Users, on_delete=models.SET_NULL, related_name='user_in_error_logs', null=True, blank=True ) # Storing the expected error message  expected_error = models.CharField(max_length=500) # Storing the field-specific error message  field_error = models.CharField(max_length=500) # Storing the trace back information for debugging  trace_back = models.TextField(max_length=500) # Storing the line number where the error occurred  line_number = models.IntegerField() # Storing the date and time when the error was recorded (auto-generated)  date_recorded = models.DateTimeField(auto_now_add=True) # Storing the browser information where the error occurred  browser = models.CharField(max_length=500) # Storing the IP address from where the error was reported  ip_address = models.CharField(max_length=500) # Storing the operating system information where the error occurred  os = models.TextField(max_length=500) # Meta class to specify additional options for the model  class Meta: # Specifying the database table name for the model  db_table = 'errorlogs' 

# Importing necessary modules and packages from django.http import JsonResponse from django.shortcuts import render from functools import wraps import httpagentparser, traceback, sys # Importing the ErrorLogs model from the 'app' Django application from app.models import ErrorLogs # Importing custom packages from customHandlers.generator import Messages class Messages: def validation_message(message, input=None): return { 'title': "Validation Error", 'icon': "warning", 'message': message, 'isError': True, 'input': input } def unauthenticated_message(message, input=None): return { 'title': "Unauthenticated Error", 'icon': "warning", 'message': message, 'isError': True, 'input': input } def exception_message(message, input=None): return { 'title': "Exception Error", 'icon': "error", 'message': message, 'isError': True, 'input': input } def success_message(message, input=None): return { 'title': "Congratulations", 'icon': "success", 'message': message, 'isError': False, 'input': input } def unrecognized_message(message="You don't have permission to perform this action", input=None): return { 'title': "Unrecognized", 'icon': "warning", 'message': message, 'isError': True, 'input': input } def sendException(request, error): """ Log and save information about an exception. :param request: HttpRequest object. :param error: Exception object. """ user = request.user if request.user.is_authenticated else None ip = request.META.get('REMOTE_ADDR') get_client_agent = request.META['HTTP_USER_AGENT'] # Parsing user agent information  detect_os = httpagentparser.detect(get_client_agent)['os']['name'] browser = httpagentparser.detect(get_client_agent)['browser']['name'] trace_err = traceback.format_exc() expected_error = str(sys.exc_info()[0]) field_error = str(sys.exc_info()[1]) line_number = str(sys.exc_info()[-1].tb_lineno) # Creating an ErrorLogs instance and saving it to the database  error_logs = ErrorLogs( user=user, ip_address=ip, browser=browser, expected_error=expected_error, field_error=field_error, trace_back=str(trace_err), line_number=line_number, os=detect_os, ) error_logs.save() def handle_exceptions(): """ Decorator function to handle exceptions in views. If an exception occurs, log the exception and return a JsonResponse with an error message. :return: Decorator function """ def decorator(view_func): @wraps(view_func) def wrapper(request, *args, **kwargs): try: # Call the original view function  return view_func(request, *args, **kwargs) except Exception as error: # Log the exception and return an error message  sendException(request, error) return JsonResponse(Messages.exception_message('Oops! Something went wrong. Please try again later or contact support at support@example.com for assistance.')) return wrapper return decorator 

from django.shortcuts import render from app.customHandlers import handle_exceptions @handle_exceptions def YourViewPage(request): return render(request , 'page.html' , {})