warden.rb

warden.rb

Rails.configuration.middleware.use RailsWarden::Manager do |manager|
  manager.default_strategies :password
  manager.failure_app = SessionsController
end

# Setup Session Serialization
class Warden::SessionSerializer
  def serialize(user)
    user.id
  end

  def deserialize(key)
    User.find(key)
  end
end

# Declare your strategies here
Warden::Strategies.add(:password) do
  def valid?
  	params["session"]["email"] || params["session"]["password"]
  end
  
  def authenticate!
    u = User.authenticate(params["session"]["email"], params["session"]["password"])
    u.nil? ? fail!("could not log in") : success!(u)
  end
end