composer install post-checkout hook

post-checkout

#!/bin/bash

# Put this file at: .git/hooks/post-checkout
# and make it executable
# You can install it system wide too, see http://stackoverflow.com/a/2293578/685587

PREV_COMMIT=$1
POST_COMMIT=$2

GIT_DIR=$(git rev-parse --git-dir)
GIT_DIR_MERGE="$GIT_DIR"/rebase-merge
GIT_DIR_APPLY="$GIT_DIR"/rebase-apply

GIT_MERGE_REBASE=false
[[ (-d "$GIT_DIR_MERGE" && -f "$GIT_DIR_MERGE/interactive") || -d "$GIT_DIR_APPLY" ]] && GIT_MERGE_REBASE=true

NOCOLOR='\e[0m'
REDCOLOR='\e[37;41m'

function composerlock {
    echo -e "$REDCOLOR composer.lock has changed: running composer install $NOCOLOR"

    COMPOSER=
    if [ -f composer.phar ]; then
        COMPOSER="php composer.phar"
    fi

    which composer > /dev/null 2>&1
    if [ $? ]; then
        COMPOSER="composer"
    fi

    if [[ $GIT_MERGE_REBASE = false && -n "$COMPOSER" ]]; then
        $COMPOSER install
    fi
}

DIFF=$(git diff --shortstat $PREV_COMMIT..$POST_COMMIT composer.lock 2>/dev/null)
if [[ $DIFF != "" ]]; then
    composerlock
fi

source https://gist.github.com/lyrixx/5867424