refactor(devices): update device payment status in background task and remove unused serializer field 🔨

devices/serializers.py

@@ -32,7 +32,6 @@ class BlockDeviceSerializer(serializers.ModelSerializer):
 
 
 class DeviceSerializer(serializers.ModelSerializer):
-    pending_payment_id = serializers.SerializerMethodField()
     user = serializers.SerializerMethodField()
 
     def get_user(self, obj):
@@ -46,21 +45,6 @@ class DeviceSerializer(serializers.ModelSerializer):
             }
         return None
 
-    def get_pending_payment_id(self, obj):
-        # Query the last unpaid payment for the device
-        unpaid_payment = (
-            Payment.objects.filter(
-                devices=obj,
-                paid=False,
-                status="PENDING",
-                expires_at__gt=timezone.now(),
-                expires_at__isnull=True,
-            )
-            .order_by("-created_at")
-            .first()
-        )
-        return unpaid_payment.id if unpaid_payment else None
-
     class Meta:  # type: ignore
         model = Device
         fields = "__all__"