Cannot Create Users Via Concord

[rajadain]

See https://rollbar.com/WikiWatershed/ModelMyWatershed/items/221/

[rajadain]

This is caused by this commit: django/django@4b9330c

which makes it necessary for custom authentication backends to explicitly take a request parameter in their authenticate method, here:

model-my-watershed/src/mmw/apps/user/backends.py

Lines 23 to 31 in 79cd1bd

	def authenticate(self, sso_id=None):
	if sso_id is not None:
	try:
	query = {self.SSOField: sso_id}
	user = self.SSOUserModel.objects.get(**query).user
	return user
	except ObjectDoesNotExist:
	return None
	return None

[rajadain]

This bug causes new users to be created successfully, but they are unable to be authenticated afterwards. This leads to multiple users being created:

SELECT c.concord_id, u.id, u.username, COUNT(p.id) AS projects
FROM user_concorduser c
	INNER JOIN auth_user u ON c.user_id = u.id
	LEFT JOIN modeling_project p ON u.id = p.user_id
WHERE c.concord_id IN (
	SELECT concord_id
	FROM user_concorduser
	GROUP BY concord_id
	HAVING COUNT(user_id) > 1
)
GROUP BY c.concord_id, u.id, u.username
ORDER BY concord_id, projects DESC;

concord_id	id	username	projects
397987	11005	ebrownson.concord	8
397987	12722	ebrownson.concord1	0
397987	12725	ebrownson.concord4	0
397987	12721	ebrownson.concord0	0
397987	12723	ebrownson.concord2	0
397987	12724	ebrownson.concord3	0
526224	10653	hhood.concord	4
526224	12738	hhood.concord0	0
588729	12743	WSTEMKline.concord2	0
588729	10926	WSTEMKline.concord	0
588729	12742	WSTEMKline.concord1	0
588729	12739	WSTEMKline.concord0	0

As can be seen above, some users that have tried to login have been unable to, and have had multiple accounts made for them.

I'm going to delete the ones with 0 projects when this is deployed, so that those users can login correctly.