Undefined model method in rails 4 - ruby-on-rails

Question

I am trying to configure Google OAuth and I am facing a very silly mistake I can't solve :
When I click on the Sign in button on the home page:
<% if user_signed_in? %>
Signed in as <%= current_user.name %>. Not you?
<%= link_to "Sign out", destroy_user_session_path,:method => :delete %>
<% else %>
<%= link_to "Sign in with Google", user_omniauth_authorize_path(:google_oauth2) %>
<% end %>
I get this error undefined method find_for_google_oauth2 for #
It says the problem is at that line:
#user = user.find_for_google_oauth2(request.env["omniauth.auth"], current_user)
Here is my app/controllers/users/omniauth_callbacks_controller.rb:
class Users::OmniauthCallbacksController < Devise::OmniauthCallbacksController
def facebook
# You need to implement the method below in your model (e.g. app/models/user.rb)
#user = User.from_omniauth(request.env["omniauth.auth"])
if #user.persisted?
sign_in_and_redirect #user, :event => :authentication #this will throw if #user is not activated
set_flash_message(:notice, :success, :kind => "Facebook") if is_navigational_format?
else
session["devise.facebook_data"] = request.env["omniauth.auth"]
redirect_to new_user_registration_url
end
end
def google_oauth2
#user = User.find_for_google_oauth2(request.env["omniauth.auth"], current_user)
if #user.persisted?
flash[:notice] = I18n.t "devise.omniauth_callbacks.success", :kind => "Google"
sign_in_and_redirect #user, :event => :authentication
else
session["devise.google_data"] = request.env["omniauth.auth"]
redirect_to new_user_registration_url
end
end
end
Here is my app/models/user.rb:
class User < ActiveRecord::Base
before_save :default_values
attr_accessor :delete_photo
validates :first_name, presence: true
validates :last_name, presence: true
# Include default devise modules. Others available are:
# :confirmable, :lockable, :timeoutable and :omniauthable
devise :database_authenticatable, :registerable,
:recoverable, :rememberable, :trackable, :validatable, :omniauthable, :omniauth_providers => [:facebook,:google_oauth2]
has_many :usertoskills
has_many :skills, through: :usertoskills
has_many :usertoprojects
has_many :projects, through: :usertoprojects
has_many :demands
has_many :news
has_attached_file :photo, :styles => { :small => "150x150>", :regular => "300x300>" },
:url => "/assets/users/:id/:style/:basename.:extension",
:path => ":rails_root/public/assets/users/:id/:style/:basename.:extension",
:default_url => "/assets/users/default/:style/default.jpg"
validates_attachment_content_type :photo, :content_type => ['image/jpeg', 'image/png']
#def name
# "#{self.first_name.camelize} #{self.last_name.camelize}"
#end
def default_values
if self.first_name && self.last_name
self.name = "#{self.first_name.camelize} #{self.last_name.camelize}"
end
end
def admin
self.role == 'admin'
end
def accessible_demands
if self.role == 'admin'
#demands = Demand.all
else
#demands = []
self.projects.each do |p| #demands.concat(p.demands) end
#demands = Demand.includes(:project).where(projects: { collective: true }, demands: {user_id: self.id}) | #demands
end
return #demands
end
def accessible_projects
if self.role == 'admin'
#projects = Project.all
else
#projects = self.projects
end
return #projects
end
def accessible_transactions
if self.role == 'admin'
#transactions = Transaction.all
else
#transactions = Transaction.where(sender_id: self.id)
end
end
def self.from_omniauth(auth)
where(provider: auth.provider, uid: auth.uid).first_or_create do |user|
user.email = auth.info.email
user.password = Devise.friendly_token[0,20]
#user.first_name = auth.info.first_name
#user.last_name = auth.info.last_name # assuming the user model has a name
#user.image = auth.info.image # assuming the user model has an image
end
def self.find_for_google_oauth2(access_token, signed_in_resource=nil)
data = access_token.info
user = User.where(:provider => access_token.provider, :uid => access_token.uid ).first
if user
return user
else
registered_user = User.where(:email => access_token.info.email).first
if registered_user
return registered_user
else
user = User.create(name: data["name"],
provider:access_token.provider,
email: data["email"],
uid: access_token.uid ,
password: Devise.friendly_token[0,20],
)
end
end
end
end
end
Thanks in advance for your help!

Answer 1

You have mismatched def and end calls in your class - you're missing an end after your def self.from_omniauth(auth) method. The where on the next line is incorrectly indented, hiding it. So in actuality, your find_for_google_oauth2 method is being defined inside your from_omniauth method.
This is one of the reasons that Ruby community conventions are really strict about a two-space indentation policy.