invoiceninja/app/controllers/CreditController.php

<?php

use ninja\repositories\CreditRepository;

class CreditController extends \BaseController
{
    protected $creditRepo;

    public function __construct(CreditRepository $creditRepo)
    {
        parent::__construct();

        $this->creditRepo = $creditRepo;
    }

    /**
     * Display a listing of the resource.
     *
     * @return Response
     */
    public function index()
    {
        return View::make('list', array(
            'entityType' => ENTITY_CREDIT,
            'title' => trans('texts.credits'),
            'columns' => Utils::trans(['checkbox', 'client', 'credit_amount', 'credit_balance', 'credit_date', 'private_notes', 'action']),
        ));
    }

    public function getDatatable($clientPublicId = null)
    {
        $credits = $this->creditRepo->find($clientPublicId, Input::get('sSearch'));

        $table = Datatable::query($credits);

        if (!$clientPublicId) {
            $table->addColumn('checkbox', function ($model) { return '<input type="checkbox" name="ids[]" value="'.$model->public_id.'" '.Utils::getEntityRowClass($model).'>'; })
                  ->addColumn('client_name', function ($model) { return link_to('clients/'.$model->client_public_id, Utils::getClientDisplayName($model)); });
        }

        return $table->addColumn('amount', function ($model) { return Utils::formatMoney($model->amount, $model->currency_id).'<span '.Utils::getEntityRowClass($model).'/>'; })
            ->addColumn('balance', function ($model) { return Utils::formatMoney($model->balance, $model->currency_id); })
            ->addColumn('credit_date', function ($model) { return Utils::fromSqlDate($model->credit_date); })
            ->addColumn('private_notes', function ($model) { return $model->private_notes; })
            ->addColumn('dropdown', function ($model) {
                if ($model->is_deleted) {
                    return '<div style="height:38px"/>';
                }

                $str = '<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">';

                if (!$model->deleted_at || $model->deleted_at == '0000-00-00') {
                    $str .= '<li><a href="javascript:archiveEntity('.$model->public_id.')">'.trans('texts.archive_credit').'</a></li>';
                } else {
                    $str .= '<li><a href="javascript:restoreEntity('.$model->public_id.')">'.trans('texts.restore_credit').'</a></li>';
                }

                return $str.'<li><a href="javascript:deleteEntity('.$model->public_id.')">'.trans('texts.delete_credit').'</a></li></ul>
                        </div>';
            })
            ->make();
    }

    public function create($clientPublicId = 0)
    {
        $data = array(
            'clientPublicId' => Input::old('client') ? Input::old('client') : $clientPublicId,
            //'invoicePublicId' => Input::old('invoice') ? Input::old('invoice') : $invoicePublicId,
            'credit' => null,
            'method' => 'POST',
            'url' => 'credits',
            'title' => trans('texts.new_credit'),
            //'currencies' => Currency::remember(DEFAULT_QUERY_CACHE)->orderBy('name')->get(),
            //'invoices' => Invoice::scope()->with('client', 'invoice_status')->orderBy('invoice_number')->get(),
            'clients' => Client::scope()->with('contacts')->orderBy('name')->get(), );

        return View::make('credits.edit', $data);
    }

    public function edit($publicId)
    {
        $credit = Credit::scope($publicId)->firstOrFail();
        $credit->credit_date = Utils::fromSqlDate($credit->credit_date);

        $data = array(
            'client' => null,
            'credit' => $credit,
            'method' => 'PUT',
            'url' => 'credits/'.$publicId,
            'title' => 'Edit Credit',
            //'currencies' => Currency::remember(DEFAULT_QUERY_CACHE)->orderBy('name')->get(),
            'clients' => Client::scope()->with('contacts')->orderBy('name')->get(), );

        return View::make('credit.edit', $data);
    }

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

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

    private function save($publicId = null)
    {
        $rules = array(
            'client' => 'required',
            'amount' => 'required|positive',
        );

        $validator = Validator::make(Input::all(), $rules);

        if ($validator->fails()) {
            $url = $publicId ? 'credits/'.$publicId.'/edit' : 'credits/create';

            return Redirect::to($url)
                ->withErrors($validator)
                ->withInput();
        } else {
            $this->creditRepo->save($publicId, Input::all());

            $message = trans('texts.created_credit');
            Session::flash('message', $message);

            return Redirect::to('clients/'.Input::get('client'));
        }
    }

    public function bulk()
    {
        $action = Input::get('action');
        $ids = Input::get('id') ? Input::get('id') : Input::get('ids');
        $count = $this->creditRepo->bulk($ids, $action);

        if ($count > 0) {
            $message = Utils::pluralize($action.'d_credit', $count);
            Session::flash('message', $message);
        }

        return Redirect::to('credits');
    }
}