login in only single device at a time

account/migrations/0008_userdevicedetails.py

@@ -0,0 +1,31 @@
+# Generated by Django 4.2.2 on 2023-07-14 11:08
+
+from django.conf import settings
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        migrations.swappable_dependency(settings.AUTH_USER_MODEL),
+        ('account', '0007_alter_defaulttaskimages_options_and_more'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='UserDeviceDetails',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('device_id', models.CharField(max_length=500)),
+                ('created_at', models.DateTimeField(auto_now_add=True)),
+                ('updated_at', models.DateTimeField(auto_now=True)),
+                ('user', models.OneToOneField(on_delete=django.db.models.deletion.CASCADE, related_name='user_device_details', to=settings.AUTH_USER_MODEL)),
+            ],
+            options={
+                'verbose_name': 'User Device Details',
+                'verbose_name_plural': 'User Device Details',
+                'db_table': 'user_device_details',
+            },
+        ),
+    ]