Pending migrations now show path instead of filename

When migrations are pending to be executed, Rails shows a warning message to users on the console. This lists the names of the pending migrations. While this is useful in single database applications, in a multi-database application migration file names may not be unique across databases.

First let’s create a dummy migration.

  ➜ rails g model blog
    invoke  active_record
    create    db/migrate/20221111115257_create_blogs.rb
    create    app/models/blog.rb
    invoke    test_unit
    create      test/models/blog_test.rb
    create      test/fixtures/blogs.yml

We will not run the migration yet.

Before

Now when we try to run the server or a test, Rails will show a warning message.

  ➜ rails s
  rails aborted!
  Migrations are pending. To resolve this issue, run:

    bin/rails db:migrate RAILS_ENV=test

  You have 1 pending migration:

  20221111115257_create_blogs.rb

While this information is useful, it does not tell us where this migration file is located.

After

After this PR Rails shows the entire path.

  ➜ rails s
  rails aborted!
  Migrations are pending. To resolve this issue, run:

    bin/rails db:migrate RAILS_ENV=test

  You have 1 pending migration:

  db/migrate/20221111115257_create_blogs.rb