怎麼在 rake task 裡面跑 task

最簡單：

task build: [

"migration:t15349:create_init_version_for_all_accounts",

"migration:t15349:migrate_account_version",

"migration:t15349:migrate_bcc_account_version"

]

或是

Rake::Task["build"].invoke

https://stackoverflow.com/questions/577944/how-to-run-rake-tasks-from-within-rake-tasks