I have a simple filter that takes input based upon the url.
urlpatterns = patterns('ahrlty.listings.views',
(r'^(?P<listing_type>.*)$', 'index'),
)
In the view I do a simple validation against a tuple in my listings
model that I use for choices in a field.
if dict(Listing.listing_types).has_key(listing_type) == False:
listing_type = None
And finally I get my data filtering on the listing_type if it exists,
otherwise I just want all the data. (Instead of none of it.)
if listing_type:
data = Listing.objects.filter(is_published = True,
listing_type = listing_type)
else:
data = Listing.objects.filter(is_published = True)
That last if statement works for this situation but I can see a
situation where I'm passing a few optional arguments in and an if
statement would get unwieldy.
I was thinking of chaining the filters for each optional field.
data = Listing.objects.filter(is_published = True)
if listing_type:
data = data.filter(listing_type = listing_type)
Is there a better way to construct the filter?
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