Git post-merge hook which, when you run `git merge` or `git pull` will then `bundle` if the project's Gemfile changed, or `npm install` if the project's package.json changed.Inspired and based off of https://gist.github.com/bumi/5706550

1.md

Make bundleing and npm installing easy

This repo has some handy handy hooks to run bundle or npm install whenever you:

• git checkout a new branch with a different Gemfile or package.json
• git pull a change to Gemfile or package.json

How can I has this!!?

1. git clone https://gist.github.com/5869846.git hooks && cd hooks && chmod +x install
2. ./install [path to folder where you keep all your repos]

This will install these hooks globally, and then re-init any repos it finds, installing your shiny new hooks along the way.

Things have gone wrong and I am sad!!1

You can uninstall these hooks by running ./install [path to your folders] remove.

install

#! /bin/bash

if [[ ! -d $1 ]]; then
  echo "Usage: $0 ~/path/to/your/sites"
  echo ""
  echo "This script will take all the git hooks in your directory and"
  echo "1. Install them in your git hook template directory so new repos you"
  echo "   start will get these hooks for free"
  echo "2. Given the path to your sites, re-init any repos it finds, so they"
  echo "   now have the shiny new hooks installed"
  exit 1
fi

hookDir="$(dirname $(which git))/../share/git-core/templates/hooks"
hooks=$(ls | grep -v $(basename $0) | grep -v '.md')
repos=$(find $1 -type d -name '.git' | sed 's/\/.git//')

if [[ $2 == 'remove' ]]; then
  for hook in $hooks; do
    rm "$hookDir/$hook"
  done

  for repo in $repos; do
    cd $repo/.git/hooks
    for hook in $hooks; do rm $hook; done
    cd - > /dev/null 2>&1
  done
else
  for hook in $hooks; do
    cp -f $hook "$hookDir/$hook"
    chmod +x "$hookDir/$hook"
  done

  for repo in $repos; do
    cd $repo && rm .git/hooks/* && git init && cd - > /dev/null 2>&1
  done
fi

post-checkout

#! /bin/bash

# post-checkout hook - looks for changes to Gemfile[.lock] or package.json,
# when you change branches, and if found, reinstalls the given packages every

# Exit early if this was only a file checkout, not a branch change ($3 == 1)
[[ $3 == 0 ]] && exit 0

oldRef=$1
newRef=$2

function changed {
  git diff --name-only $oldRef $newRef | grep "^$1" > /dev/null 2>&1
}

if changed 'Gemfile.*'; then
  echo "Gemfile changed, bundling"
  bundle install
  [[ -d 'tmp' ]] && touch 'tmp/restart.txt'
fi

if changed 'db/migrate'; then
  echo "Migrations pending, migrating"
  rake db:migrate RAILS_ENV=development
  rake db:migrate RAILS_ENV=test
  rake db:migrate RAILS_ENV=production
  [[ -d 'tmp' ]] && touch 'tmp/restart.txt'
fi

if changed 'package.json'; then
  echo "Package.json changed, installing"
  npm install
fi

post-merge

#!/bin/sh

# post-checkout hook - looks for changes to Gemfile[.lock] or package.json, and if
# found, reinstalls the given packages every time you `git merge` or `git pull`

# To install, copy to your project's .git/hooks folder, and `chmod +x post-merge`

function changed {
  git diff --name-only HEAD@{2} HEAD | grep "^$1" > /dev/null 2>&1
}

if changed 'Gemfile.*'; then
  echo "Gemfile changed, bundling"
  bundle install
  [[ -d 'tmp' ]] && touch 'tmp/restart.txt'
fi

if changed 'db/migrate'; then
  echo "Migrations pending, migrating"
  rake db:migrate RAILS_ENV=development
  rake db:migrate RAILS_ENV=test
  rake db:migrate RAILS_ENV=production
  [[ -d 'tmp' ]] && touch 'tmp/restart.txt'
fi

if changed 'package.json'; then
  npm install
fi

Done, thanks @stefansundin!

Another thing, you should update so the script uses bundle exec on the rake commands.