Use update

cfl_common/common/migrations/0042_totalactivity.py

@@ -6,15 +6,16 @@
 class Migration(migrations.Migration):
 
     dependencies = [
-        ('common', '0041_populate_gb_counties'),
+        ("common", "0041_populate_gb_counties"),
     ]
 
     operations = [
         migrations.CreateModel(
-            name='TotalActivity',
+            name="TotalActivity",
             fields=[
-                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
-                ('registrations', models.PositiveIntegerField(default=0)),
+                ("id", models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name="ID")),
+                ("registrations", models.PositiveIntegerField(default=0)),
             ],
+            options={"verbose_name_plural": "Total activity"},
         ),
     ]

portal/views/home.py

@@ -14,6 +14,7 @@
 from django.contrib.auth import logout
 from django.contrib.auth.models import User
 from django.core.exceptions import ObjectDoesNotExist
+from django.db.models import F
 from django.http import HttpResponse, HttpResponseRedirect
 from django.shortcuts import redirect, render
 from django.urls import reverse, reverse_lazy
@@ -154,9 +155,7 @@ def process_signup_form(request, data):
 
         send_verification_email(request, teacher.user.user, data)
 
-        total_activity = TotalActivity.objects.get(id=1)
-        total_activity.registrations += 1
-        total_activity.save()
+        TotalActivity.objects.update(registrations=F("registrations") + 1)
 
     return render(request, "portal/email_verification_needed.html", {"usertype": "TEACHER"}, status=302)
 
@@ -196,9 +195,7 @@ def process_independent_student_signup_form(request, data):
 
     send_verification_email(request, student.new_user, data, age=age)
 
-    total_activity = TotalActivity.objects.get(id=1)
-    total_activity.registrations += 1
-    total_activity.save()
+    TotalActivity.objects.update(registrations=F("registrations") + 1)
 
     return render(request, "portal/email_verification_needed.html", {"usertype": "INDEP_STUDENT"}, status=302)
 

portal/views/teacher/teach.py

@@ -15,6 +15,7 @@
 from django.contrib.auth.decorators import login_required, user_passes_test
 from django.contrib.auth.models import User
 from django.contrib.staticfiles.storage import staticfiles_storage
+from django.db.models import F
 from django.forms.formsets import formset_factory
 from django.http import Http404, HttpResponse, HttpResponseRedirect
 from django.shortcuts import get_object_or_404, render
@@ -124,9 +125,7 @@ def process_edit_class(request, access_code, onboarding_done, next_url):
                     klass=klass, name=name, password=password, login_id=hashed_login_id
                 )
 
-                total_activity = TotalActivity.objects.get(id=1)
-                total_activity.registrations += 1
-                total_activity.save()
+                TotalActivity.objects.update(registrations=F("registrations") + 1)
 
                 login_url = generate_student_url(request, new_student, login_id)
                 students_info.append(