価値を提供していないFacebookユーザーをどのように処理しますか? koala gem と omniauth を使用しています。
次のエラーが表示されます。
NoMethodError in SessionsController#create
undefined method `[]' for nil:NilClass
app/models/user.rb:14:in `block in from_omniauth'
app/models/user.rb:5:in `tap'
app/models/user.rb:5:in `from_omniauth'
app/controllers/sessions_controller.rb:3:in `create'
そして、アプリが認証しようとしている Facebook ユーザーが、場所、教育履歴など、アプリが必要とするデータ値を持っていないため、このエラーが発生します。
SessionsController で始まる新しいユーザー プロセス:
class SessionsController < ApplicationController
def create
user = User.from_omniauth(env['omniauth.auth'])
session[:user_id] = user.id
redirect_to root_url, notice: "Signed in!"
end
end
次に、ユーザーモデルで:
def self.from_omniauth(auth)
where(auth.slice(:provider, :uid)).first_or_initialize.tap do |user|
user.provider = auth["provider"]
user.uid = auth["uid"]
user.name = auth["info"]["name"] unless auth["info"].blank?
user.first_name = auth["info"]["first_name"] unless auth["info"].blank?
user.last_name = auth["info"]["last_name"] unless auth["info"].blank?
user.image = auth["info"]["image"] unless auth["info"].blank?
user.email = auth["info"]["email"] unless auth["info"].blank?
user.gender = auth["extra"]["raw_info"]["gender"] if (!auth["extra"].blank? && !auth["extra"]["raw_info"].blank?)
user.location = auth["extra"]["raw_info"]["location"]["name"] if (!auth["extra"].blank? && !auth["extra"]["raw_info"].blank? && !auth["extra"]["raw_info"]["location"].blank?)
user.token = auth["credentials"]["token"] unless auth["credentials"].blank?
# highschool data
user.highschool_name = auth["extra"]["raw_info"]["education"][0]["school"]["name"] if (!auth["extra"].blank? && !auth["extra"]["raw_info"]["education"][0]["school"].blank?)
user.highschool_year = auth["extra"]["raw_info"]["education"][0]["year"]["name"] if (!auth["extra"].blank? && !auth["extra"]["raw_info"]["education"][0]["year"].blank?)
# graduate school data
user.graduateschool_name = auth["extra"]["raw_info"]["education"][1]["school"]["name"] if (!auth["extra"].blank? && !auth["extra"]["raw_info"]["education"][1]["school"].blank?)
user.graduateschool_year = auth["extra"]["raw_info"]["education"][1]["year"]["name"] if (!auth["extra"].blank? && !auth["extra"]["raw_info"]["education"][1]["year"].blank?)
user.add_friends
user.save!
user
end
end
end