Devise strategy used when an admin has to verify users before they are granted access to a site.

check_verified_strategy.rb

# encoding: UTF-8
class CheckVerifiedStrategy < ::Devise::Strategies::Base
  def valid?
    params[:user] and params[:user][:email]
  end
  def authenticate!
    user = User.where(email: params[:user][:email]).first
    if user and not user.verified?
      fail!(I18n.t('profile.requested'))
    else
      pass
    end
  end
end