oauth로 최초 로그인 시 닉네임을 입력받습니다(단, 트위터는 제외- 기존의 nickname 필드를 읽어올 수 있음)

Author: minhyeok92

app/controllers/application_controller.rb

@@ -5,10 +5,6 @@ class ApplicationController < ActionController::Base
 
   before_action :configure_permitted_parameters, if: :devise_controller?
   before_action :authenticate_user!
-  # migration for new field nickname which is required field.
-  before_action :is_nickname_not_empty?
-
-  @my_logger ||= Logger.new("#{Rails.root}/log/my.log")
 
   protected
   def configure_permitted_parameters

app/controllers/users/omniauth_callbacks_controller.rb

@@ -13,9 +13,12 @@ def facebook
   def google_oauth2
     @user = User.find_for_oauth2(request.env["omniauth.auth"])
 
+    session["omniauth"] = request.env["omniauth.auth"]
+    
     if @user.nil?
-      session["omniauth"] = request.env["omniauth.auth"]
-      redirect_to users_merge_path
+      render users_nickname_new_path
+    elsif @user == "dup"
+      redirect_to users_merge_path   
     else
       sign_in_and_redirect @user, :event => :authentication
     end

app/controllers/users_controller.rb

@@ -20,6 +20,20 @@ def merge_callback
     end        
   end
 
+  def nickname_new
+  end
+
+  def nickname_new_callback
+    auth = session["omniauth"]
+
+    @user = User.create!(provider:auth["provider"],
+      uid: auth["uid"],
+      email: auth["info"]["email"],
+      password: Devise.friendly_token[0,20],
+      nickname: params[:nickname])
+    sign_in_and_redirect @user, :event => :authentication
+  end
+
   def sign_up_from_twitter
   end
 

app/models/user.rb

@@ -51,13 +51,9 @@ def self.find_for_oauth2(access_token)
 
     unless user
       if User.where(email: data["email"]).first
-        nil
+        "dup"
       else
-        user = User.create!(provider:access_token.provider,
-          uid:access_token.uid,
-          email: data["email"],
-          password: Devise.friendly_token[0,20],
-          nickname: data["name"])
+        nil
       end
     end
     user

app/views/users/nickname/new.html.erb

@@ -0,0 +1,8 @@
+
+<%= form_tag({controller: "/users", action: "nickname_new_callback"}, method: "post") do %>
+	
+<p>처음이십니다. 새로운 닉네임을 입력하세요</p>
+<%= text_field_tag(:nickname) %>
+ 	<%= submit_tag("Submit", class: "btn btn-primary") %>
+<% end %>
+

config/routes.rb

@@ -11,6 +11,9 @@
 
     get 'users/merge', action: 'merge', as: 'users_merge'
     get 'users/merge/callback', action: 'merge_callback', as: 'users_merge_callback'
+
+    get 'users/nickname/new', action: 'nickname_new'
+    post 'users/nickname/new/callback', action: 'nickname_new_callback'
   end
 
   get '/users/(/:nickname)', to: 'users#show', as: 'show_user'