Capistrano 3 deploy script for Laravel 4.

capistrano-laravel-deploy.rb

# config valid only for Capistrano 3.1
lock '3.1.0'

set :application, ""  # EDIT your app name

set :scm, :git
set :repo_url,  "" # EDIT your git repository

set :keep_releases, 3

set :use_sudo, false
set :ssh_options, {
    keys: %w(~/.ssh/id_rsa)
}

namespace :environment do

    desc "Copy Environment Variables"
    task :sync do
        on roles(:app), in: :sequence, wait: 5 do
            execute :echo, "-n /etc/environment", raise_on_non_zero_exit: false
            fetch(:default_environment).each do |key, value|
                execute :echo, "'#{key}=\"#{value}\"' >> /etc/environment"
            end
            execute :service, "apache2 restart"
        end
    end

end

namespace :composer do

    desc "Running Composer Self-Update"
    task :update do
        on roles(:app), in: :sequence, wait: 5 do
            execute :composer, "self-update"
        end
    end

    desc "Running Composer Install"
    task :install do
        on roles(:app), in: :sequence, wait: 5 do
            within release_path  do
                execute :composer, "install --no-dev --quiet"
            end
        end
    end

end

namespace :laravel do

    desc "Setup Laravel folder permissions"
    task :permissions do
        on roles(:app), in: :sequence, wait: 5 do
            within release_path  do
                execute :chmod, "u+x artisan"
                execute :chmod, "-R 777 app/storage/cache"
                execute :chmod, "-R 777 app/storage/logs"
                execute :chmod, "-R 777 app/storage/meta"
                execute :chmod, "-R 777 app/storage/sessions"
                execute :chmod, "-R 777 app/storage/views"
            end
        end
    end

    desc "Run Laravel Artisan migrate task."
    task :migrate do
        on roles(:app), in: :sequence, wait: 5 do
            within release_path  do
                execute :php, "artisan migrate"
            end
        end
    end

    desc "Run Laravel Artisan seed task."
    task :seed do
        on roles(:app), in: :sequence, wait: 5 do
            within release_path  do
                execute :php, "artisan db:seed"
            end
        end
    end

    desc "Optimize Laravel Class Loader"
    task :optimize do
        on roles(:app), in: :sequence, wait: 5 do
            within release_path  do
                execute :php, "artisan clear-compiled"
                execute :php, "artisan optimize"
            end
        end
    end

end

namespace :deploy do

    after :published, "composer:update"
    after :published, "composer:install"
    after :published, "environment:sync"
    after :published, "laravel:permissions"
    after :published, "laravel:optimize"
    after :published, "laravel:migrate"
    # after :published, "laravel:seed"

end

For L5, storage folders have changed. This is what I have used:

execute :chmod, "-R 777 storage/framework/cache"
execute :chmod, "-R 777 storage/framework/sessions"
execute :chmod, "-R 777 storage/framework/views"
execute :chmod, "-R 777 storage/logs"

If you need meta folder include it as storage/meta.
Also, on line 22, I replaced default_environment with default_env.