```ruby
class OmniauthCallbacksController < Devise::OmniauthCallbacksController
  before_action :failure, if: :malformed_auth?

  def github
    @developer = Authenticator.call(auth_hash)
    if @developer.persisted?
      sign_in @developer, event: :authentication
      redirect_to root_path
    else
      failure
    end
  end

  def failure
    flash[:alert] = 'Please try again'
    redirect_to new_developer_session_path
  end

  def after_sign_up_path_for(resource)
    if resource.email_verified?
      super resource
    else
      finish_signup_path(resource)
    end
  end

  def after_sign_in_path_for(resource)
    if resource.email_verified?
      super resource
    else
      edit_developer_path(resource)
    end
  end

  private

  def auth_hash
    request.env['omniauth.auth']
  end

  def malformed_auth?
    auth_hash.nil? || auth_hash[:info].nil?
  end
end
```

Add remember me for omniauth
user
```ruby
class OmniauthCallbacksController < Devise::OmniauthCallbacksController
  before_action :failure, if: :malformed_auth?

  def github
    @developer = Authenticator.call(auth_hash)
    if @developer.persisted?
      remember_me(@developer)
      sign_in @developer, event: :authentication
      redirect_to root_path
    else
      failure
    end
  end

  def failure
    flash[:alert] = 'Please try again'
    redirect_to new_developer_session_path
  end

  def after_sign_up_path_for(resource)
    if resource.email_verified?
      super resource
    else
      finish_signup_path(resource)
    end
  end

  def after_sign_in_path_for(resource)
    if resource.email_verified?
      super resource
    else
      edit_developer_path(resource)
    end
  end

  private

  def auth_hash
    request.env['omniauth.auth']
  end

  def malformed_auth?
    auth_hash.nil? || auth_hash[:info].nil?
  end
end
```
assistant