Is there a way to know what all migrations have been applied to Rails database?

Question

Is there a way to know what all migrations have been applied to Rails database?

I am looking for a command-line option, rather than checking the schema_migrations table in the database.

Answer 1

rake db:version will give you the current "schema version number" which should match the filename of the last migration that was executed.

Answer 2

To check the status of specific migrations, you can use the following Rake task:

rails db:migrate:status

This will output a table with the status of up or down for each migration:

 Status   Migration ID    Migration Name
--------------------------------------------------
   up     migration_id    migration_name

In your case, you can check if you have any migration not applied:

rails db:migrate:status | grep down