每次用户使用omniauth和github进行身份验证时，Rails 4应用程序都会要求注册

Question

我有一个rails应用程序，它设计为身份验证后端。我正在学习在我正在开发的更大的应用程序中实现omniauth，我决定首先使用小应用程序检查它。所以，我的应用程序有一个用户模型。两个控制器（一个用于静态主页，另一个用于覆盖设计omniauth回调）

我可以用facebook登录，但我遇到了github登录的问题。 Github要求一次又一次注册。

any

以上是github repo的链接。

omniauth_callbacks_controller.rb

puts request.env['omniauth.auth'].to_yaml


--- !ruby/hash:OmniAuth::AuthHash
provider: github
uid: '366217'
info: !ruby/hash:OmniAuth::AuthHash::InfoHash
  nickname: bishisht
  email: 
  name: Bishisht Bhatta
  image: https://avatars.githubusercontent.com/u/366217?v=3
  urls: !ruby/hash:OmniAuth::AuthHash
    GitHub: https://github.com/bishisht
    Blog: http://bishisht.github.io/
credentials: !ruby/hash:OmniAuth::AuthHash
  token: 012d594abc447bb4ce95c07244f946f206d425f7
  expires: false
extra: !ruby/hash:OmniAuth::AuthHash
  raw_info: !ruby/hash:OmniAuth::AuthHash
    login: bishisht
    id: 366217
    avatar_url: https://avatars.githubusercontent.com/u/366217?v=3
    gravatar_id: ''
    url: https://api.github.com/users/bishisht
    html_url: https://github.com/bishisht
    followers_url: https://api.github.com/users/bishisht/followers
    following_url: https://api.github.com/users/bishisht/following{/other_user}
    gists_url: https://api.github.com/users/bishisht/gists{/gist_id}
    starred_url: https://api.github.com/users/bishisht/starred{/owner}{/repo}
    subscriptions_url: https://api.github.com/users/bishisht/subscriptions
    organizations_url: https://api.github.com/users/bishisht/orgs
    repos_url: https://api.github.com/users/bishisht/repos
    events_url: https://api.github.com/users/bishisht/events{/privacy}
    received_events_url: https://api.github.com/users/bishisht/received_events
    type: User
    site_admin: false
    name: Bishisht Bhatta
    company: Narmada Infosys
    blog: http://bishisht.github.io/
    location: Netizen
    email: bishisht.np.mnr@gmail.com
    hireable: true
    bio: 
    public_repos: 59
    public_gists: 4
    followers: 21
    following: 98
    created_at: '2010-08-16T17:42:52Z'
    updated_at: '2016-06-17T17:49:23Z'
    private_gists: 0
    total_private_repos: 0
    owned_private_repos: 0
    disk_usage: 167968
    collaborators: 0
    plan: !ruby/hash:OmniAuth::AuthHash
      name: free
      space: 976562499
      collaborators: 0
      private_repos: 0
  all_emails: []

user.rb

def new
   @projecttype = Projecttype.new
end

def create
    @projecttype = Projecttype.create(projecttype_params)
    redirect_to @projecttype
end

编辑： 回复

<%= form_for @projecttype do |f| %>