Simple OmniAuth-Twitter failing to create new user because of validation

问题

I am loosely following Railscasts Simple OmniAuth http://railscasts.com/episodes/241-simple-omniauth to create my Twitter login. When I try to sign in and create a new user through twitter, I get the following message:

Validation failed: Password can't be blank, Name is not valid., Email can't be blank, Email is not valid.

If I hit the refresh button, I get the following error:

OAuth::Unauthorized 401 Unauthorized

I've already set my callback URL to http://127.0.0.1:3000/auth/twitter/callback but I still get that message. I'm testing on localhost.

I modeled my users after Hartl's railstutorial http://ruby.railstutorial.org/ruby-on-rails-tutorial-book and my website project requires that users have those fields filled in.

Unlike the railscasts, I created a new method to handle omniauth logins:

sessions_controller.rb

def omniauth_create
  auth = request.env["omniauth.auth"]
  user = User.find_by_provider_and_uid(auth["provider"], auth["uid"]) || 
         User.create_with_omniauth(auth)
  session[:user_id] = user.id
  redirect_to user
end

user.rb

def self.create_with_omniauth(auth)
  create! do |user|
    user.provider = auth["provider"]
    user.uid = auth["uid"]
    user.name = auth["info"]["name"]
  end
end

Question: How do I bypass the validations?

So far, I've tried using skip_before_filter :authenticate, :only => [:omniauth_create], but that didn't work.

Thanks.

回答1:

There are two ways to skip the validations. Either you can skip them all by passing :validate => false to the create method (usually A Bad Idea), or you can modify your validations to something like the following:

user.rb

validates_confirmation_of :password, :if => :password_required?

def password_required?
  !provider.blank? && super
end

来源：https://stackoverflow.com/questions/10728005/simple-omniauth-twitter-failing-to-create-new-user-because-of-validation