App\Http\Controllers\InvoiceController::edit PHP Method

    public function edit(InvoiceRequest $request, $publicId, $clone = false)
    {
        $account = Auth::user()->account;
        $invoice = $request->entity()->load('invitations', 'account.country', 'client.contacts', 'client.country', 'invoice_items', 'documents', 'expenses', 'expenses.documents', 'payments');
        $entityType = $invoice->getEntityType();
        $contactIds = DB::table('invitations')->join('contacts', 'contacts.id', '=', 'invitations.contact_id')->where('invitations.invoice_id', '=', $invoice->id)->where('invitations.account_id', '=', Auth::user()->account_id)->where('invitations.deleted_at', '=', null)->select('contacts.public_id')->lists('public_id');
        $clients = Client::scope()->withTrashed()->with('contacts', 'country');
        if ($clone) {
            $invoice->id = $invoice->public_id = null;
            $invoice->invoice_number = $account->getNextInvoiceNumber($invoice);
            $invoice->balance = $invoice->amount;
            $invoice->invoice_status_id = 0;
            $invoice->invoice_date = date_create()->format('Y-m-d');
            $method = 'POST';
            $url = "{$entityType}s";
        } else {
            $method = 'PUT';
            $url = "{$entityType}s/{$invoice->public_id}";
            $clients->whereId($invoice->client_id);
        }
        $invoice->invoice_date = Utils::fromSqlDate($invoice->invoice_date);
        $invoice->recurring_due_date = $invoice->due_date;
        // Keep in SQL form
        $invoice->due_date = Utils::fromSqlDate($invoice->due_date);
        $invoice->start_date = Utils::fromSqlDate($invoice->start_date);
        $invoice->end_date = Utils::fromSqlDate($invoice->end_date);
        $invoice->last_sent_date = Utils::fromSqlDate($invoice->last_sent_date);
        $invoice->features = ['customize_invoice_design' => Auth::user()->hasFeature(FEATURE_CUSTOMIZE_INVOICE_DESIGN), 'remove_created_by' => Auth::user()->hasFeature(FEATURE_REMOVE_CREATED_BY), 'invoice_settings' => Auth::user()->hasFeature(FEATURE_INVOICE_SETTINGS)];
        $actions = [['url' => 'javascript:onCloneClick()', 'label' => trans("texts.clone_{$entityType}")], ['url' => URL::to("{$entityType}s/{$entityType}_history/{$invoice->public_id}"), 'label' => trans('texts.view_history')], DropdownButton::DIVIDER];
        if ($invoice->invoice_status_id < INVOICE_STATUS_SENT && !$invoice->is_recurring) {
            $actions[] = ['url' => 'javascript:onMarkClick()', 'label' => trans('texts.mark_sent')];
        }
        if ($entityType == ENTITY_QUOTE) {
            if ($invoice->quote_invoice_id) {
                $actions[] = ['url' => URL::to("invoices/{$invoice->quote_invoice_id}/edit"), 'label' => trans('texts.view_invoice')];
            } else {
                $actions[] = ['url' => 'javascript:onConvertClick()', 'label' => trans('texts.convert_to_invoice')];
            }
        } elseif ($entityType == ENTITY_INVOICE) {
            if ($invoice->quote_id) {
                $actions[] = ['url' => URL::to("quotes/{$invoice->quote_id}/edit"), 'label' => trans('texts.view_quote')];
            }
            if (!$invoice->is_recurring && $invoice->balance > 0) {
                $actions[] = ['url' => 'javascript:onPaymentClick()', 'label' => trans('texts.enter_payment')];
            }
            foreach ($invoice->payments as $payment) {
                $label = trans('texts.view_payment');
                if (count($invoice->payments) > 1) {
                    $label .= ' - ' . $account->formatMoney($payment->amount, $invoice->client);
                }
                $actions[] = ['url' => $payment->present()->url, 'label' => $label];
            }
        }
        if (count($actions) > 3) {
            $actions[] = DropdownButton::DIVIDER;
        }
        $actions[] = ['url' => 'javascript:onArchiveClick()', 'label' => trans("texts.archive_{$entityType}")];
        $actions[] = ['url' => 'javascript:onDeleteClick()', 'label' => trans("texts.delete_{$entityType}")];
        $lastSent = $invoice->is_recurring && $invoice->last_sent_date ? $invoice->recurring_invoices->last() : null;
        if (!Auth::user()->hasPermission('view_all')) {
            $clients = $clients->where('clients.user_id', '=', Auth::user()->id);
        }
        $data = ['clients' => $clients->get(), 'entityType' => $entityType, 'showBreadcrumbs' => $clone, 'invoice' => $invoice, 'method' => $method, 'invitationContactIds' => $contactIds, 'url' => $url, 'title' => trans("texts.edit_{$entityType}"), 'client' => $invoice->client, 'isRecurring' => $invoice->is_recurring, 'actions' => $actions, 'lastSent' => $lastSent];
        $data = array_merge($data, self::getViewModel($invoice));
        if ($invoice->isSent() && $invoice->getAutoBillEnabled() && !$invoice->isPaid()) {
            $data['autoBillChangeWarning'] = $invoice->client->autoBillLater();
        }
        if ($clone) {
            $data['formIsChanged'] = true;
        }
        // Set the invitation data on the client's contacts
        if (!$clone) {
            $clients = $data['clients'];
            foreach ($clients as $client) {
                if ($client->id != $invoice->client->id) {
                    continue;
                }
                foreach ($invoice->invitations as $invitation) {
                    foreach ($client->contacts as $contact) {
                        if ($invitation->contact_id == $contact->id) {
                            $contact->email_error = $invitation->email_error;
                            $contact->invitation_link = $invitation->getLink();
                            $contact->invitation_viewed = $invitation->viewed_date && $invitation->viewed_date != '0000-00-00 00:00:00' ? $invitation->viewed_date : false;
                            $contact->invitation_openend = $invitation->opened_date && $invitation->opened_date != '0000-00-00 00:00:00' ? $invitation->opened_date : false;
                            $contact->invitation_status = $contact->email_error ? false : $invitation->getStatus();
                            $contact->invitation_signature_svg = $invitation->signatureDiv();
                        }
                    }
                }
                break;
            }
        }
        return View::make('invoices.edit', $data);
    }