2.4 DeviceUsage মডেলের জন্য API

class DeviceUsage(models.Model):
    device_id = models.CharField(max_length=80, unique=True)
    usage_count = models.IntegerField(default=0)

    def __str__(self):
        return f"{self.device_id} - {self.usage_count}"

from rest_framework import serializers
from .models import DeviceUsage

class DeviceUsageSerializer(serializers.ModelSerializer):
    class Meta:
        model = DeviceUsage
        fields = '__all__'

from rest_framework import generics
from .models import DeviceUsage
from .serializers import DeviceUsageSerializer

# ✅ GET (list) & POST (create)
class DeviceUsageListCreateView(generics.ListCreateAPIView):
    queryset = DeviceUsage.objects.all()
    serializer_class = DeviceUsageSerializer

# ✅ PUT/PATCH/DELETE/GET single
class DeviceUsageDetailView(generics.RetrieveUpdateDestroyAPIView):
    queryset = DeviceUsage.objects.all()
    serializer_class = DeviceUsageSerializer
    lookup_field = 'id'

from django.urls import path
from .views import DeviceUsageListCreateView, DeviceUsageDetailView

urlpatterns += [
    path('device-usage/', DeviceUsageListCreateView.as_view()),         # List & Create
    path('device-usage/<int:id>/', DeviceUsageDetailView.as_view()),    # Retrieve, Update, Delete
]