From dfd1305ad266e8c2d56623984c26ed3d8ef61278 Mon Sep 17 00:00:00 2001
From: Kowalski <kmet.p@seznam.cz>
Date: Tue, 1 Sep 2026 18:24:30 +0200
Subject: [PATCH] =?UTF-8?q?Odb=C4=9Bratel=20povinn=C3=BD?=
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---
 app/Model/Facade/FakturaFacade.php          | 4 ++++
 app/UI/FakturaEdit/FakturaEditPresenter.php | 3 ++-
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/app/Model/Facade/FakturaFacade.php b/app/Model/Facade/FakturaFacade.php
index 6ca61a7..41df1e4 100644
--- a/app/Model/Facade/FakturaFacade.php
+++ b/app/Model/Facade/FakturaFacade.php
@@ -108,6 +108,10 @@ class FakturaFacade
             $zakaznikId = !empty($data['ZAKAZNIK_ID']) ? (int) $data['ZAKAZNIK_ID'] : null;
             $zakaznik = $zakaznikId ? $this->kufrikExplorer->table('ZAKAZNIK')->where('ID', $zakaznikId)->fetch() : null;
 
+            if (!$zakaznikId || !$zakaznik) {
+                throw new \InvalidArgumentException('Faktura musí mít odběratele.');
+            }
+
             $oPrajm = $zakaznik ? trim(($zakaznik->PRIJMENI ?? '') . ' ' . ($zakaznik->JMENO ?? '')) : null;
 
             $dBanka = null;
diff --git a/app/UI/FakturaEdit/FakturaEditPresenter.php b/app/UI/FakturaEdit/FakturaEditPresenter.php
index e2088ee..393ce91 100644
--- a/app/UI/FakturaEdit/FakturaEditPresenter.php
+++ b/app/UI/FakturaEdit/FakturaEditPresenter.php
@@ -107,7 +107,8 @@ class FakturaEditPresenter extends BasePresenter
         }
 
         $form->addSelect('ZAKAZNIK_ID', 'Odběratel:', $zakazniciPairs)
-            ->setPrompt('-- Vyberte zákazníka --');
+            ->setPrompt('-- Vyberte zákazníka --')
+            ->setRequired('Vyberte odběratele.');
 
         $form->addText('CISLO', 'Číslo faktury:')
             ->setDefaultValue(date('Y') . '001');