App\Ninja\Datatables\InvoiceDatatable::getStatusLabel PHP Method

    private function getStatusLabel($model)
    {
        $entityType = $this->entityType;
        // check if invoice is overdue
        if (Utils::parseFloat($model->balance) && $model->due_date && $model->due_date != '0000-00-00') {
            if (\DateTime::createFromFormat('Y-m-d', $model->due_date) < new \DateTime('now')) {
                $label = $entityType == ENTITY_INVOICE ? trans('texts.overdue') : trans('texts.expired');
                return '<h4><div class="label label-danger">' . $label . '</div></h4>';
            }
        }
        $label = trans('texts.status_' . strtolower($model->invoice_status_name));
        $class = 'default';
        switch ($model->invoice_status_id) {
            case INVOICE_STATUS_SENT:
                $class = 'info';
                break;
            case INVOICE_STATUS_VIEWED:
                $class = 'warning';
                break;
            case INVOICE_STATUS_APPROVED:
                $class = 'success';
                break;
            case INVOICE_STATUS_PARTIAL:
                $class = 'primary';
                break;
            case INVOICE_STATUS_PAID:
                $class = 'success';
                break;
        }
        return "<h4><div class=\"label label-{$class}\">{$label}</div></h4>";
    }