Added the functionality to get the total time spent by the user in a session

mysite/users/__init__.py

@@ -0,0 +1,31 @@
+from django.contrib.auth.signals import user_logged_out, user_logged_in
+from django.dispatch import receiver
+from time import perf_counter
+from .models import Profile
+
+log_in_time = 0
+log_out_time = 0
+total_time_spent = 0
+
+@receiver(user_logged_in)
+def log_in(sender, user, request, **kwargs):
+  global log_in_time
+  log_in_time = perf_counter()
+
+@receiver(user_logged_out)
+def log_out(sender, user, request, **kwargs):
+  global log_out_time
+  log_out_time = perf_counter()
+  calculate_total_time(user)
+
+def calculate_total_time(user):
+  global log_in_time
+  global log_out_time
+  global total_time_spent
+  total_time_spent = log_out_time - log_in_time
+  save_time(total_time_spent, user)
+
+def save_time(total_time_spent, user):
+  p = Profile.objects.raw('SELECT user from Profile WHERE user  = %s', [user])
+
+  p.save()

mysite/users/models.py

@@ -1,13 +1,13 @@
 from django.db import models
 from django.contrib.auth.models import User
 
-
 # Create your models here.
 
 class Profile(models.Model):
     user= models.OneToOneField(User, on_delete=models.CASCADE)
     image = models.ImageField(default='admin/default.jpg',upload_to='profile_pics')
     bio = models.CharField(max_length=50, null=True, blank=True)
+    timespent = models.FloatField(default=0)
 
     def __str__(self):
-        return f'{self.user.username} profile'
+        return f'{self.user.username} profile'