Rails cannot load such file while authenticating yahoo via oauth - ruby-on-rails

Question

I am getting this error i don't understand why I have that in my gem file and also included it properly still have no idea how to resolve this error
cannot load such file -- omniauth_oauth
[yahoos_controller]
require 'omniauth_oauth'
require 'multi_json'
module OmniAuth
module Strategies
#
# Authenticate to Yahoo via OAuth and retrieve basic
# user information.
#
# Usage:
#
# use OmniAuth::Strategies::Yahoo, 'consumerkey', 'consumersecret'
#
class YahoosController < omniAuth::strategies::OAuth
def initialize(app, consumer_key, consumer_secret)
super(app, :yahoo, consumer_key, consumer_secret,
# Specifying the full url is the only way yahoo seems to work. Serious WTFery here.
:request_token_url => 'https://api.login.yahoo.com/oauth/v2/get_request_token',
:access_token_url => 'https://api.login.yahoo.com/oauth/v2/get_token',
:authorize_url => "https://api.login.yahoo.com/oauth/v2/request_auth")
end
def auth_hash
ui = user_info
OmniAuth::Utils.deep_merge(super, {
'uid' => ui['uid'],
'user_info' => ui,
'extra' => {'user_hash' => user_hash}
})
end
def user_info
profile = self.user_hash['profile']
nickname = profile['nickname']
{
'uid' => profile['guid'],
'nickname' => nickname,
'name' => profile['givenName'] || nickname,
'image' => profile['image']['imageUrl'],
'description' => profile['message'],
'urls' => {'Profile' => profile['profileUrl'] }
}
end
def user_hash
uid = #access_token.params['xoauth_yahoo_guid']
#user_hash ||= MultiJson.decode(#access_token.get("http://social.yahooapis.com/v1/user/#{uid}/profile?format=json").body)
end
end
end
end
[gem file]
source 'https://rubygems.org'
# Bundle edge Rails instead: gem 'rails', github: 'rails/rails'
gem 'rails', '4.2.4'
# Use sqlite3 as the database for Active Record
gem 'mysql2','~> 0.3.20'
# Use SCSS for stylesheets
gem 'sass-rails', '~> 5.0'
# Use Uglifier as compressor for JavaScript assets
gem 'uglifier', '>= 1.3.0'
# Use CoffeeScript for .coffee assets and views
gem 'coffee-rails', '~> 4.1.0'
gem 'omniauth', '~> 1.2'
gem 'omniauth-auth0', '~> 1.1'
gem 'omniauth-yahoo-oauth2', '~> 1.1'
gem 'nokogiri'
gem 'multi_json', '~> 1.11', '>= 1.11.2'
# See https://github.com/rails/execjs#readme for more supported runtimes
# gem 'therubyracer', platforms: :ruby
# Use jquery as the JavaScript library
gem 'jquery-rails'
# Turbolinks makes following links in your web application faster. Read more: https://github.com/rails/turbolinks
gem 'turbolinks'
# Build JSON APIs with ease. Read more: https://github.com/rails/jbuilder
gem 'jbuilder', '~> 2.0'
# bundle exec rake doc:rails generates the API under doc/api.
gem 'sdoc', '~> 0.4.0', group: :doc
# Use ActiveModel has_secure_password
# gem 'bcrypt', '~> 3.1.7'
# Use Unicorn as the app server
# gem 'unicorn'
# Use Capistrano for deployment
# gem 'capistrano-rails', group: :development
group :development, :test do
# Call 'byebug' anywhere in the code to stop execution and get a debugger console
gem 'byebug'
end
group :development do
# Access an IRB console on exception pages or by using <%= console %> in views
gem 'web-console', '~> 2.0'
# Spring speeds up development by keeping your application running in the background. Read more: https://github.com/rails/spring
gem 'spring'
end

Answer 1

The gem omniauth-auth0 is for authenticating with the auth0 service. You don't appear to want this.
The gem omniauth_oauth is for building generic strategies - you don't need this either.
To authenticate with Yahoo, you should only need these gems:
gem 'omniauth', '~> 1.2'
gem 'omniauth-yahoo-oauth2', '~> 1.1'
To set up Yahoo, it is a simpler set up than the one you are using. It is shown in the docs here. The key part is:
Rails.application.config.middleware.use OmniAuth::Builder do
provider :yahoo_oauth2, yahoo_client_id, yahoo_secret,
name: 'yahoo'
end
Nick