How do I code a rake task that runs the Rails db:migrate task?
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03-07-2019 - |
Question
I would like to run db:migrate VERSION=0 and then db:migrate inside of my own rake task. I am confused about how to do this. Do I need a special require statement? My rake task will reside in the lib/tasks directory of a Rails app. Thanks.
Solution
Is your task just dependent on having a clean db? If that's the case then you can do:
task :my_task => [:environment, 'db:reset']
OTHER TIPS
EDIT: Rake::Task[] won't accept parameters, you have to set it in ENV. In addition, you have to reenable the task to run it multiple times.
ENV['VERSION']= '0'
Rake::Task['db:migrate'].invoke
Rake::Task['db:migrate'].reenable
ENV.delete 'VERSION'
Rake::Task["db:migrate"].invoke
NOTE: Rake::Task.reenable requires Rake 0.8.2 or higher.
Check out rake db:reset
as that will accomplish what you are trying to do.
To see what all of your rake tasks do, run rake -T
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