rails:db_migrate

Invokes rake to migrate the database using rake db:migrate.

# config/deploy.rb
require 'mina/git'
require 'mina/bundler'

# ... settings here

task :deploy do
  deploy do
    invoke :'git:clone'
    invoke :'bundle:install'
    invoke :'rails:db_migrate'
    invoke :'rails:assets_precompile'
  end
end

This is used as an invoked subtask.

To use this, you must add require 'mina/rails' to your deploy.rb.