UserPreference matching query does not exist.

Using Django Mystery Errors
4

Hi,

Great to hear you solved your issue. One thing that I think is nice to know, and it sure has helped me along the way, is using the DoesNotExist exception to your advantage which can simplify this code and reduce the the number of queries to one.

try:
    currency = UserPreference.objects.get(user = request.user).currency
except UserPreference.DoesNotExist:
    currency = 'INR - Indian Rupee'

In short, the try except clause tries to get(user=request.user) an object matching your query. If there is no matching result it will raise the DoesNotExist exception and the except will catch it, executing the line of code after the except clause.