Rails + Devise: if user_signed_in? not working - ruby-on-rails

Question

I first discovered an issue where it didn't appear as if the user is getting logged in with this logic:
_header.html.erb:
<% if user_signed_in? %>
<li><%= link_to "Log out", destroy_user_session_path, method: :delete %></li>
<% else %>
<li><%= link_to "Sign in", new_user_session_path %></li>
<% end %>
Then I tried adding this to application_controller.rb:
before_filter :authenticate_user!
And I kept getting looped back to the login page (even with valid credentials).
It appears as if my user sessions aren't working — although I can see on my RailsAdmin console that the sign in count and last sign in date are showing as if they are logging in.
Here's my user.rb:
class User < ActiveRecord::Base
# Include default devise modules. Others available are:
# :confirmable, :lockable, :timeoutable and :omniauthable
devise :omniauthable, :database_authenticatable, :registerable,
:recoverable, :rememberable, :trackable
belongs_to :company
has_and_belongs_to_many :productlines
end
And my routes.rb:
Rails.application.routes.draw do
mount RailsAdmin::Engine => '/admin', as: 'rails_admin'
devise_for :users, :controllers => { :omniauth_callbacks => "omniauth_callbacks" }
root 'productlines#index'
end
And omniauth_callbacks_controller.rb:
class OmniauthCallbacksController < Devise::OmniauthCallbacksController
def google_oauth2
#user = User.from_omniauth(request.env["omniauth.auth"])
if #user.persisted?
flash.notice = "Signed in through Google"
sign_in_and_redirect #user
return
else
session["devise.user_attributes"] = #user.attributes
flash.notice = "You are almost Done! Please provide a password to finish setting up your account"
redirect_to new_user_registration_path
end
end
end
Update: Here is my application_controller.rb
class ApplicationController < ActionController::Base
# Prevent CSRF attacks by raising an exception.
# For APIs, you may want to use :null_session instead.
skip_before_filter :verify_authenticity_token, :if => Proc.new { |c| c.request.format == 'application/json' }
before_filter :productline
def productline
#productlines = Productline.all
end
end
Every time I sign in, I'm rerouted back to the root_path and the "Sign In" link still appears.
Edit: Here is the log output when I click Sign In:
Started POST "/users/sign_in" for ::1 at 2015-07-06 23:20:15 -0400
Processing by Devise::SessionsController#create as HTML
Parameters: {"utf8"=>"✓", "authenticity_token"=>"6Eh4Qw3qErGmsppatErFZYhTOZHs8DhCOMXqGAMrBzRdTd72L5rIGAChLDvnI/GzOv1kQsyL43o/B6AQQtnk4Q==", "user"=>{"email"=>"broy#bullhorn.com", "password"=>"[FILTERED]", "remember_me"=>"0"}, "commit"=>"Log in"}
User Load (0.2ms) SELECT "users".* FROM "users" WHERE "users"."email" = ? ORDER BY "users"."id" ASC LIMIT 1 [["email", "b#gmail.com"]]
(0.1ms) begin transaction
SQL (0.3ms) UPDATE "users" SET "last_sign_in_at" = ?, "current_sign_in_at" = ?, "sign_in_count" = ?, "updated_at" = ? WHERE "users"."id" = ? [["last_sign_in_at", "2015-07-07 03:17:08.826634"], ["current_sign_in_at", "2015-07-07 03:20:15.963289"], ["sign_in_count", 93], ["updated_at", "2015-07-07 03:20:15.964239"], ["id", 4]]
(1.5ms) commit transaction
Redirected to http://localhost:3000/
Completed 302 Found in 73ms (ActiveRecord: 2.1ms)
Started GET "/" for ::1 at 2015-07-06 23:20:15 -0400
Processing by ProductlinesController#index as HTML
Productline Load (0.1ms) SELECT "productlines".* FROM "productlines"
Rendered productlines/index.html.erb within layouts/application (2.1ms)
Rendered layouts/_header.html.erb (1.7ms)
Completed 200 OK in 48ms (Views: 47.3ms | ActiveRecord: 0.1ms)
Started GET "/" for ::1 at 2015-07-06 23:20:16 -0400
Processing by ProductlinesController#index as HTML
Productline Load (0.2ms) SELECT "productlines".* FROM "productlines"
Rendered productlines/index.html.erb within layouts/application (104.8ms)
Rendered layouts/_header.html.erb (1.1ms)
Completed 200 OK in 155ms (Views: 154.1ms | ActiveRecord: 0.2ms)

Answer 1

Do you want to put an exception in first on your authenticate user? That way it is not trying to run an authentication before current_user/#user/etc has even been set. For example if your root is index:
before_action :authenticate_user!, :except => [:index]
Then - be sure to have the better_errors gem and throw in some nonsense jibberish in your if user_signed_in? statement, refresh the page to trigger the console in the browser. See if #user or current_user or what you are using got set at all in the first place. I would then debug backwards from there.
https://github.com/charliesome/better_errors
Finally here is a stackoverflow link I came upon with a similar issue and a few answers below:
Rails devise: user_signed_in? not working