Bypass LDAP Authentication in Rails When Using Devise

devise.rb

# Add the Warden strategy contained in local_override.rb into the devise.rb file.  The devise.rb should also be in the config/intializers directory.

Devise.setup do |config|
  config.warden do |manager|
    manager.default_strategies(:scope => :user).unshift :local_override
  end
  
  # Other devise configuration...
end

local_override.rb

# Create a new authentication strategy for Warden.  This file should go in config/initializers.
require 'devise/strategies/authenticatable'

module Devise
  module Strategies
    class LocalOverride < Authenticatable
      def valid?
        true
      end

      def authenticate!
        if params[:user]
          user = # Set the user to some mock/existing user account that has the privileges you require, e.g. User.find_by_ad_account("jjohnson3")
          success!(user)
          # user = User.find_by_email(params[:user][:email])

          # if user && user.encrypted_password == params[:user][:password]
          #   success!(user)
          # else
          #   fail
          # end
        else
          fail
        end
      end
    end
  end
end

Warden::Strategies.add(:local_override, Devise::Strategies::LocalOverride)