Is it possible to override the create_migration template in Rails 6?

Question

I tried placing my custom file in multiple locations inside the lib folder with no success.
I found a PR from 2017 to reactivate this behavior but wasn't merged.
https://github.com/rails/rails/pull/13972
I had a look at
https://github.com/rails/rails/blob/master/activerecord/lib/rails/generators/active_record/migration/migration_generator.rb#L17
and it looks like it's not implemented, but I don't know if just this file should change.
I´ve found resources on how to do it in older rails versions, but is there any way to override the Rails templates in Rails 6?

kkurian · Answer

Put your templates here: /lib/templates/active_record/migration/create_table_migration.rb.tt /lib/templates/active_record/migration/migration.rb.tt See: https://github.com/rails/rails/pull/13972 for related discussion

nfisher · Answer

From this line of the documentation:

Since we want to customize Rails::Generators::HelperGenerator, we can do that by simply making a template copy inside lib/templates/rails/helper with the name helper.rb.

In the case for migrations, the template names should be specified as follows (here are the default templates for reference):

lib/templates/active_record/migration/create_table_migration.rb.tt
lib/templates/active_record/migration/migration.rb.tt

Is it possible to override the create_migration template in Rails 6?

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