Reset database after doing a checkout

post-checkout.sh

#! /bin/sh

# Reset the database only if the previous branch and the current one have different schemas

# Start from the repository root.
cd ./$(git rev-parse --show-cdup)

if git diff `git rev-parse --abbrev-ref HEAD` @{-1} | grep "ActiveRecord::Schema.define(version: "; then
  rake db:reset
else
  echo "Skipping db reset: schema changes not found"
fi

This git hook allows to automatically reload the schema if the previous branch and the current one have different schema.rb files