Question

From the command line, I can run

rake db:migrate:up VERSION=20120123160700

This will migrate up to that specific version.

I want to be able to migrate up (but not beyond a specific version) from a rake task, preferably using db:migrate:up.

I’ve tried the following and put the error messages below:

Rake::Task['db:migrate:up VERSION=20120123160700'].invoke

Don’t know how to build task ‘db:migrate:up VERSION=20111208105833’

Rake::Task['db:migrate:up'].invoke('VERSION=20120123160700')

VERSION is required

Rake.application.invoke_task("db:migrate:up[VERSION=20120123160700]"

VERSION is required

Rake.application.invoke_task("db:migrate:up[VERSION=20120123160700]"

Don’t know how to build task ‘db:migrate:up VERSION=20111208105833’

How can I make this work?

Answer 1

It’s probably not the better solution but it should work. You can do this :

  ActiveRecord::Migrator.run(:up, ActiveRecord::Migrator.migrations_path, 20120123160700)
  Rake::Task["db:schema:dump"].invoke if ActiveRecord::Base.schema_format == :ruby

You can see the source here : https://github.com/rails/rails/blob/621df2a1ec01b77f7b052b3571f3c696f0443fea/activerecord/lib/active_record/railties/databases.rake at line 163.