Question

I have a Django model which has a foreign key that is optional. I set it up this way so that table would contain default options of different service_types but one could override this option by specifying a controller foreign key.

Now in my views I have a bunch of code that looks like this:

try:
    modeService = RegressionServices.objects.get(controller=controller, service_type=SERVICE_TYPE_CONTROLLER_MODE)
except RegressionServices.DoesNotExist:
    modeService = RegressionServices.objects.get(service_type=SERVICE_TYPE_CONTROLLER_MODE)

I would like to reduce this down to one call and I think that a Django model Manager should be the way to do so. Essentially it would check for the controller in **kwargs and if present it would basically do the code above. I am looking in the docs and only finding that the get_query_set method is usually being overridden. Is it okay to override the get() method? Will I even have access to the RegressionServices model in a model Manager get() method?

Can anyone think of a way to do this other than a model manager?

Answer 1

Just do a logical OR, using Q objects.