barebone app with django and react, sse, jwt token, comport reader, test comport writer, requires com0com, users with groups, sample table vehicles, tokens for access and refresh

backend/vehicles/admin.py

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+from django.contrib import admin
+
+# Register your models here.

backend/vehicles/apps.py

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+from django.apps import AppConfig
+
+
+class VehiclesConfig(AppConfig):
+    default_auto_field = "django.db.models.BigAutoField"
+    name = "vehicles"

backend/vehicles/migrations/0001_initial.py

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+# Generated by Django 4.2.8 on 2026-01-13 16:51
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    initial = True
+
+    dependencies = []
+
+    operations = [
+        migrations.CreateModel(
+            name="Vehicle",
+            fields=[
+                (
+                    "id",
+                    models.BigAutoField(
+                        auto_created=True,
+                        primary_key=True,
+                        serialize=False,
+                        verbose_name="ID",
+                    ),
+                ),
+                ("vehicle_number", models.CharField(max_length=15, unique=True)),
+            ],
+        ),
+        migrations.CreateModel(
+            name="VehicleExtra",
+            fields=[
+                (
+                    "id",
+                    models.BigAutoField(
+                        auto_created=True,
+                        primary_key=True,
+                        serialize=False,
+                        verbose_name="ID",
+                    ),
+                ),
+                ("data", models.JSONField(default=dict)),
+                (
+                    "vehicle",
+                    models.OneToOneField(
+                        on_delete=django.db.models.deletion.CASCADE,
+                        related_name="extra",
+                        to="vehicles.vehicle",
+                    ),
+                ),
+            ],
+        ),
+    ]

backend/vehicles/models.py

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+from django.db import models
+
+# Create your models here.
+class Vehicle(models.Model):
+    vehicle_number = models.CharField(max_length=15, unique=True)
+
+    def __str__(self):
+        return f"{self.vehicle_number}"
+    
+class VehicleExtra(models.Model):
+    vehicle = models.OneToOneField(
+        Vehicle, on_delete=models.CASCADE, related_name="extra"
+    )
+    data = models.JSONField(default=dict)

backend/vehicles/serializers.py

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+from rest_framework import serializers
+from .models import Vehicle
+
+class VehicleSerializer(serializers.ModelSerializer):
+    class Meta:
+        model = Vehicle
+        fields = ['id', 'vehicle_number']

backend/vehicles/tests.py

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+from django.test import TestCase
+
+# Create your tests here.

backend/vehicles/urls.py

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+from django.urls import path
+from vehicles.views import vehiclesView, VehicleListCreateAPIView, VehicleRetrieveUpdateDestroyAPIView, get_vehicles
+
+urlpatterns = [
+    path("", vehiclesView.as_view(), name='list_vehicles'),
+    # API endpoints
+    path("api/", VehicleListCreateAPIView.as_view(), name='vehicles-list-create'),
+    path("api/<int:pk>/", VehicleRetrieveUpdateDestroyAPIView.as_view(), name='vehicles-detail'),
+    path("api/list/", get_vehicles, name='get-vehicles'),
+]

backend/vehicles/views.py

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+from django.shortcuts import render
+
+from django.shortcuts import render
+from django.views.generic.list import ListView
+from rest_framework import generics, status
+from rest_framework.decorators import api_view, permission_classes
+from rest_framework.permissions import IsAuthenticated
+from rest_framework.response import Response
+
+from .models import Vehicle
+from .serializers import VehicleSerializer
+from scalesapp.sse import broadcast_update
+
+# Create your views here.
+class CountriesView(ListView):
+    pass
+
+# API Views
+class VehicleListCreateAPIView(generics.ListCreateAPIView):
+    queryset =Vehicle.objects.all()
+    serializer_class = VehicleSerializer
+    permission_classes = [IsAuthenticated]
+    
+    def create(self, request, *args, **kwargs):
+        """Override create to broadcast SSE message"""
+        serializer = self.get_serializer(data=request.data)
+        serializer.is_valid(raise_exception=True)
+        self.perform_create(serializer)
+        
+        # Broadcast SSE update
+        broadcast_update('vehicle', 'created', serializer.data)
+        
+        return Response(serializer.data, status=status.HTTP_201_CREATED)
+
+class VehicleRetrieveUpdateDestroyAPIView(generics.RetrieveUpdateDestroyAPIView):
+    queryset = Vehicle.objects.all()
+    serializer_class = VehicleSerializer
+    permission_classes = [IsAuthenticated]
+    
+    def update(self, request, *args, **kwargs):
+        """Override update to broadcast SSE message"""
+        partial = kwargs.pop('partial', False)
+        instance = self.get_object()
+        serializer = self.get_serializer(instance, data=request.data, partial=partial)
+        serializer.is_valid(raise_exception=True)
+        self.perform_update(serializer)
+        
+        # Broadcast SSE update
+        broadcast_update('vehicle', 'updated', serializer.data)
+        
+        return Response(serializer.data)
+    
+    def destroy(self, request, *args, **kwargs):
+        """Override destroy to broadcast SSE message"""
+        instance = self.get_object()
+        country_data = CountrySerializer(instance).data
+        self.perform_destroy(instance)
+        
+        # Broadcast SSE update
+        broadcast_update('vehicle', 'deleted', country_data)
+        
+        return Response(status=status.HTTP_204_NO_CONTENT)
+
+@api_view(['GET'])
+@permission_classes([IsAuthenticated])
+def get_vehicles(request):
+    """API endpoint for getting countries list"""
+    vehicles = Vehicle.objects.all().order_by('id')
+    serializer = VehicleSerializer(vehicles, many=True)
+    return Response(serializer.data)