I'm trying to create a custom implementation of IUserLoginStore for MongoDB and I noticed when using
UserManager<ApplicationUser>
with the method
var userResult = await _userManager.CreateAsync(user);
it goes through the implementation of
GetUserNameAsync
FindByNameAsync
SetNormalizedUserNameAsync
GetUserIdAsync
I would like to clarify two questions:
what's the purpose of having a NormalizedUsername and a UserName?
the only difference that I could notice id that the normalizedUserName is in uppercase.
I'm using my Implementation only to store users from an external login(Google plus), is there a way that I can omit username and NormilizedUserName since basically, I'm using the email in these three fields, I'm feeling that I'm duplicating data and it doesn't make any sense to me.
any recommendations?
1) Normalization stops people registering user names which only differ in letter casing.
2) No - those fields are part of the basic data model.
- Yes, you can (if you really want):
FindByNameAsync
should search by u.Name case-insensitive (do you trust your DB settings?)
GetNormalizedUserNameAsync
should return user.Name.ToUpperCase()
SetNormalizedUserNameAsync
should do nothing
Please note that 2.1 can skip any index on name
column in DB and hurt performance of your app (check your DB, again). Or cause 'client-side' execution (and again, dramatically hurt performance). Depending of your implementation.
I use such "minimized" User
class only in internal enterprise systems which uses only specific OAuth provider and accepting users only from specified domain (Google Apps). This systems does not perform any search by user name and I safely throw NotImplementedException
in many methods.