NoMethodError: undefined method `needs_migration?' for ActiveRecord::Migrator:Class

Question

I'm getting the below error message, not sure how to resolve it. Can anyone help please?

NoMethodError: undefined method `needs_migration?' for ActiveRecord::Migrator:Class

Here is the config.ru code:

require './config/environment'

if ActiveRecord::Migrator.needs_migration?
  raise 'Migrations are pending. Run `rake db:migrate` to resolve the issue.'
end

use Rack::MethodOverride

use UsersController
use ArtworkController
run ApplicationController

Answer 1

change your code to

if ActiveRecord::Base.connection.migration_context.needs_migration?
  raise 'Migrations are pending. Run `rake db:migrate` to resolve the issue.'
end