def handle_exception(self, exc):
"""Handles response exceptions."""
if isinstance(exc, Http404):
return JsonResponseNotFound({"msg": "Not found"})
if isinstance(exc, PermissionDenied):
return JsonResponseForbidden({"msg": "Permission denied."})
if isinstance(exc, JSONDecodeError):
return JsonResponseBadRequest({"msg": "Invalid JSON data"})
raise
def process_exception(self, request, exception):
msg = force_str(exception)
if isinstance(exception, Http404):
if request.is_ajax():
return JsonResponseNotFound({"msg": msg})
elif isinstance(exception, Http400):
if request.is_ajax():
return JsonResponseBadRequest({"msg": msg})
elif isinstance(exception, PermissionDenied):
if request.is_ajax():
return JsonResponseForbidden({"msg": msg})
ctx = {
"permission_error": msg,
}
if not request.user.is_authenticated:
msg_args = {
"login_link": reverse("account_login"),
}
login_msg = _(
'You need to <a class="js-login" '
'href="%(login_link)s">login</a> to access this page.' %
msg_args)
ctx["login_message"] = login_msg
return HttpResponseForbidden(
render_to_string("errors/403.html",
context=ctx,
request=request))
elif exception.__class__.__name__ in (
"OperationalError",
"ProgrammingError",
"DatabaseError",
):
# HACKISH: Since exceptions thrown by different databases do not
# share the same class heirarchy (DBAPI2 sucks) we have to check
# the class name instead. Since python uses duck typing I will call
# this poking-the-duck-until-it-quacks-like-a-duck-test
return handle_exception(request, exception, "errors/db.html")
else:
return handle_exception(request, exception, "errors/500.html")
def process_exception(self, request, exception):
msg = force_unicode(exception)
if isinstance(exception, Http404):
if request.is_ajax():
return JsonResponseNotFound({'msg': msg})
elif isinstance(exception, Http400):
if request.is_ajax():
return JsonResponseBadRequest({'msg': msg})
elif isinstance(exception, PermissionDenied):
if request.is_ajax():
return JsonResponseForbidden({'msg': msg})
ctx = {
'permission_error': msg,
}
if not request.user.is_authenticated():
msg_args = {
'login_link': reverse('account_login'),
}
login_msg = _(
'You need to <a class="js-login" href="%(login_link)s">login</a> '
'to access this page.', msg_args)
ctx["login_message"] = login_msg
return HttpResponseForbidden(
render_to_string('errors/403.html', ctx,
RequestContext(request)))
elif (exception.__class__.__name__
in ('OperationalError', 'ProgrammingError', 'DatabaseError')):
# HACKISH: Since exceptions thrown by different databases do
# not share the same class heirarchy (DBAPI2 sucks) we have to
# check the class name instead. Since python uses duck typing
# I will call this
# poking-the-duck-until-it-quacks-like-a-duck-test
return handle_exception(request, exception, 'errors/db.html')
else:
return handle_exception(request, exception, 'errors/500.html')