add database to Device model

Sistemas/serializers.py

@@ -28,7 +28,7 @@ class DeviceSerializer(serializers.ModelSerializer):
     macAddress = serializers.CharField(read_only=True)
     class Meta:
         model =Device
-        fields = ('client','sistema','device_name','device_os', 'ip_address','token', 'macAddress')
+        fields = ('client','sistema','device_name','device_os', 'ip_address','token', 'macAddress', 'database',)
 
     #this assign the masAddress value from 
     #the request context passed throught argument in the view to the serializer
@@ -39,8 +39,12 @@ class DeviceSerializer(serializers.ModelSerializer):
         sistema = validated_data['sistema']
         client = validated_data['client']
         existing_devices = Device.objects.filter(
-            Q(sistema=sistema)& Q(client=client)& Q(macAddress__icontains=mac_address)
+            Q(sistema=sistema)
+            & Q(client=client)
+            & Q(macAddress__icontains=mac_address)
+            & Q(database=self.context['request'].data.get('database'))
         )
+        
         if existing_devices.exists():
             # A device with the same macAddress already exists for the given sistema and client
             # Get the number of existing devices and add 1 to create a new suffix