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

Ophthalmia

Share your sample code as well. – Turbine

which rails version are you using? – Unlatch

Hi @Ravi mariya, I'm using Rails 5.1.4 – Ophthalmia

Ok, then i think this will not work in rails5 – Unlatch

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

Unlatch

Awesome! Thanks Ravi! Much appreciated :) – Ophthalmia

What if there is more than 1 connection in ActiveRecord? – Navarra