Ruby on Rails ActiveRecord Migrations Checking migration status


We can check the status of migrations by running

rake db:migrate:status
rails db:migrate:status

The output will look like this:

Status   Migration ID    Migration Name
up     20140711185212  Create documentation pages
up     20140724111844  Create nifty attachments table
up     20140724114255  Create documentation screenshots
up     20160213170731  Create owners
up     20160218214551  Create users
up     20160221162159  ********** NO FILE **********
up     20160222231219  ********** NO FILE **********

Under the status field, up means the migration has been run and down means that we need to run the migration.