Forked from skyriverbend/rails_switch_branch.py
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November 15, 2024 14:24
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Post checkout hook for managing rails migrations and bundle install
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| #!/usr/local/bin/python | |
| """ | |
| To use this script, you must be in the root directory of a Rails project that | |
| is using git. You should also make sure that your directory does not contain any | |
| uncommitted changes. Then run: | |
| $ python rails_switch_branch.py name_of_another_branch | |
| Running the above will do the following: | |
| 1. Roll back any migrations on your current branch which do not exist on the | |
| other branch | |
| 2. Discard any changes to the db/schema.rb file | |
| 3. Check out the other branch | |
| 4. Run any new migrations existing in the other branch | |
| 5. Update your test database | |
| TODO: | |
| - Check if git directory is dirty. If so, do not run. | |
| """ | |
| import sys | |
| import subprocess | |
| import re | |
| BRANCH_NAME = sys.argv[1] | |
| print "*** Switching from current branch to: " + BRANCH_NAME | |
| files_changed = subprocess.check_output(("git diff " + BRANCH_NAME + " --name-status").split()) | |
| migrations = re.findall("A\\tdb/migrate/([0-9]+)", files_changed) | |
| for migration in reversed(migrations): | |
| sh_command = "bundle exec rake db:migrate:down VERSION=" + migration | |
| print "*** Running: " + sh_command | |
| subprocess.call(sh_command.split()) | |
| print "*** Discarding any changes to db/schema.rb" | |
| subprocess.call("git checkout db/schema.rb".split()) | |
| subprocess.call(("git checkout " + BRANCH_NAME).split()) | |
| print "*** Running: bundle exec rake db:migrate" | |
| subprocess.call("bundle exec rake db:migrate".split()) | |
| print "*** Running: bundle exec rake db:test:prepare" | |
| subprocess.call("bundle exec rake db:test:prepare".split()) | |
| print '*** Successfully switched branches and migrated to "' + BRANCH_NAME + '"' | |
Author
Add this to .git/hooks/post-checkout and it will manage your migrations as you use git normally
Awesome!
Author
Thanks!
Author
This grew out of a gist, it now lives at brysgo/git-rails
Small note for readers:
After copying to .git/hooks/post-checkout, run
chmod u+x .git/hooks/post-checkout
to make it executable
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