db:migrateをロールバックしながらブランチを切り替えるスクリプト

git-checkout.sh

#!/bin/bash
set -e

RAILS_COMMAND="docker compose exec -T backend rails"

branch_name=$1

if [ -z "$branch_name" ]; then
  echo "Please specify branch name."
  exit 0;
fi

if [ -z "`git branch --list $branch_name`" ]; then
  echo "Branch does not exist"
  exit 0;
fi

echo "*** Running: db:migrate:down"
versions=`git diff develop --name-status | grep -E "A\\tbackend/db/migrate" | sed -e "s/^.*\([0-9]\{14\}\).*$/\1/" | sort -r`
for version in ${versions[@]}
do
  eval $RAILS_COMMAND db:migrate:down VERSION=$version
done

git checkout backend/db/schema.rb

echo "*** Switching from current branch to: $branch_name"

git checkout $branch_name

echo "*** Running: db:migrate"

eval $RAILS_COMMAND db:migrate

こちらのPythonのスクリプトをbashで書き直したものです。