Add BlockDeviceSerializer and DeviceBlockAPIView for blocking devices

devices/serializers.py

@@ -9,6 +9,14 @@ class CreateDeviceSerializer(serializers.ModelSerializer):
         fields = ["name", "mac"]
 
 
+class BlockDeviceSerializer(serializers.ModelSerializer):
+    blocked = serializers.BooleanField(required=True)
+
+    class Meta:
+        model = Device
+        fields = ["blocked"]
+
+
 class DeviceSerializer(serializers.ModelSerializer):
     class Meta:
         model = Device