Cannot mass assign login

[danielamkaer]

I needed this in plugins/redmine_omniauth_saml/lib/redmine_omniauth_saml/user_patch.rb
to prevent an issue with mass assignment:

    user = new user_attributes.except(:login)
    user.created_by_omniauth_saml = true
    user.login    = user_attributes[:login]

error:
Current user: anonymous
WARNING: Can't mass-assign protected attributes for User: login
plugins/redmine_omniauth_saml/lib/redmine_omniauth_saml/user_patch.rb:12:in find_or_create_from_omniauth' plugins/redmine_omniauth_saml/lib/redmine_omniauth_saml/account_controller_patch.rb:32:in login_with_saml_callback'
lib/redmine/sudo_mode.rb:63:in `sudo_mode'
Completed 422 Unprocessable Entity in 11ms (ActiveRecord: 5.7ms)

[chrodriguez]

Which redmine version are you using?

[danielamkaer]

Installed using apt on ubuntu 16.04

Environment:
Redmine version 3.2.1.stable
Ruby version 2.3.1-p112 (2016-04-26) [x86_64-linux-gnu]
Rails version 4.2.6
Environment production
Database adapter Mysql2