invoiceninja/app/Http/Controllers/ProductController.php

<?php namespace App\Http\Controllers;

use Auth;
use Str;
use DB;
use Datatable;
use Utils;
use URL;
use View;
use Input;
use Session;
use Redirect;

use App\Models\Product;
use App\Models\TaxRate;

class ProductController extends BaseController
{
    public function index()
    {
        return Redirect::to('settings/' . ACCOUNT_PRODUCTS);
    }

    public function getDatatable()
    {
        $account = Auth::user()->account;

        $query = DB::table('products')
                ->leftJoin('tax_rates', function($join){
                    $join->on('tax_rates.id', '=', 'products.default_tax_rate_id')
                         ->whereNull('tax_rates.deleted_at');
                })
                ->where('products.account_id', '=', Auth::user()->account_id)
                ->where('products.deleted_at', '=', null)
                ->select('products.public_id', 'products.product_key', 'products.notes', 'products.cost', 'tax_rates.name as tax_name', 'tax_rates.rate as tax_rate');

        $datatable = Datatable::query($query)
                  ->addColumn('product_key', function ($model) { return link_to('products/'.$model->public_id.'/edit', $model->product_key); })
                  ->addColumn('notes', function ($model) { return nl2br(Str::limit($model->notes, 100)); })
                  ->addColumn('cost', function ($model) { return Utils::formatMoney($model->cost); });

        if ($account->invoice_item_taxes) {
            $datatable->addColumn('tax_rate', function ($model) { return $model->tax_rate ? ($model->tax_name . ' ' . $model->tax_rate . '%') : ''; });
        }

        return $datatable->addColumn('dropdown', function ($model) {
                    return '<div class="btn-group tr-action" style="visibility:hidden;">
                        <button type="button" class="btn btn-xs btn-default dropdown-toggle" data-toggle="dropdown">
                          '.trans('texts.select').' <span class="caret"></span>
                        </button>
                        <ul class="dropdown-menu" role="menu">
                        <li><a href="'.URL::to('products/'.$model->public_id).'/edit">'.uctrans('texts.edit_product').'</a></li>
                        <li class="divider"></li>
                        <li><a href="'.URL::to('products/'.$model->public_id).'/archive">'.uctrans('texts.archive_product').'</a></li>
                      </ul>
                    </div>';
                  })
                  ->orderColumns(['cost', 'product_key', 'cost'])
                  ->make();
    }

    public function edit($publicId)
    {
        $account = Auth::user()->account;

        $data = [
          'account' => $account,
          'taxRates' => $account->invoice_item_taxes ? TaxRate::scope()->get(['id', 'name', 'rate']) : null,
          'product' => Product::scope($publicId)->firstOrFail(),
          'method' => 'PUT',
          'url' => 'products/'.$publicId,
          'title' => trans('texts.edit_product'),
        ];

        return View::make('accounts.product', $data);
    }

    public function create()
    {
        $account = Auth::user()->account;

        $data = [
          'account' => $account,
          'taxRates' => $account->invoice_item_taxes ? TaxRate::scope()->get(['id', 'name', 'rate']) : null,
          'product' => null,
          'method' => 'POST',
          'url' => 'products',
          'title' => trans('texts.create_product'),
        ];

        return View::make('accounts.product', $data);
    }

    public function store()
    {
        return $this->save();
    }

    public function update($publicId)
    {
        return $this->save($publicId);
    }

    private function save($productPublicId = false)
    {
        if ($productPublicId) {
            $product = Product::scope($productPublicId)->firstOrFail();
        } else {
            $product = Product::createNew();
        }

        $product->product_key = trim(Input::get('product_key'));
        $product->notes = trim(Input::get('notes'));
        $product->cost = trim(Input::get('cost'));
        $product->default_tax_rate_id = Input::get('default_tax_rate_id');

        $product->save();

        $message = $productPublicId ? trans('texts.updated_product') : trans('texts.created_product');
        Session::flash('message', $message);

        return Redirect::to('settings/' . ACCOUNT_PRODUCTS);
    }

    public function archive($publicId)
    {
        $product = Product::scope($publicId)->firstOrFail();
        $product->delete();

        Session::flash('message', trans('texts.archived_product'));

        return Redirect::to('settings/' . ACCOUNT_PRODUCTS);
    }
}