At the current code, we could only hopes that all database backend
modules fully support Python DB API 2.0, in this case the Exception
tree. I did a simple dir() and looks like MySQLdb, psyopg1, and sqlite3
all support the exceptions, therefore you can reliably catch
IntegrityError exception by wrapping the save() call like this:
from django.core.db import dbmod
try:
u2.save()
except dbmod.Database.IntegrityError:
//handle error
pass
Though, a better way in your case is improving the view code to check
existing user with the same username ahead of time, and rely less on
catching the database exception since not every database trigger the
same exception class on the same error.
Amit Upadhyay wrote:
Hi,
What is the rigth way of catching IntegrityError, the traceback I get
suggests using _mysql_exceptions.IntegrityError, which is wrong
because it assumes mysql, as well as it goes against the general
python guideline of not using "hidden" members of modules.
