Rake task: validate all objects in database

validate_all_objects.rake

namespace :test_db do
  task validate_all_objects: :environment do
    Dir[Rails.root.to_s + '/app/models/**/*.rb'].each do |file|
      begin
        require file
      rescue
      end
    end

    ActiveRecord::Base.descendants.each do |model|
      print model
      print "\n"

      begin
        array = model.try(:all)
        array.each do |object|
          unless object.valid?
            print object.id
            print ' : '
            print object.errors.to_json
            print "\n"
          end
        end
      rescue
      end

      print "\n"
    end
  end
end