django conditionally filtering objects

Question

I would like to retrieve a bunch of rows from my database using a set of filters.

I was wondering if conditional filter is applicable in django. That is, \"filter if

Answer 1

To continue on @iuysal answer:

To make it generic you need to pass the key too as parameter, to do that you need to pass a dictionary, here's how I did it:

Create your dictionary like this:

filters = {'filter1': 'value1', 'filter2__startswith': 'valu', ...}

Then pass it to your Item filters like this:

Item.objects.filter(*[Q(**{k: v}) for k, v in filters.items() if v], filter3='value3')

The first version less cryptic version I had:

def _filter(filters):
    filters = []
    for k, v in n.items():
        if v:
            filters.append(Q(**{k: v}))
    return filters

filters = _filter({'name': name})
return Item.objects.filter(*filters)

Unpacking explanation: We want to give Q (queries) as args to objects.filter as args while we want to give kwargs to Q()

I have this on production now (I will just modify the filters names because it's sensitive):

def get_queryset(self):
    filter1 = self.request.GET.get('filter1 ', '')
    filter2__startswith = self.request.GET.get('filter2_prefix ', '')

    def filters_to_Qs(filters):
        return [Q(**{k: v}) for k, v in filters.items() if v]

    filters = {'filter1': filter1 ,
               'filter2__startswith': filter2__startswith }

    return Order.objects.filter(*filters_to_Qs(filters))