Handle parent deletion in associated tables (ThirdPartyBundle)

src/Bundle/ChillThirdPartyBundle/Entity/ThirdParty.php

@@ -113,6 +113,7 @@ class ThirdParty
      * @var Address|null
      * @ORM\ManyToOne(targetEntity="\Chill\MainBundle\Entity\Address",
      *   cascade={"persist", "remove"})
+     * @ORM\JoinColumn(nullable=true, onDelete="SET NULL")
      */
     private $address;
 

src/Bundle/ChillThirdPartyBundle/migrations/Version20210525211216.php

@@ -0,0 +1,31 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Chill\Migrations\ThirdParty;
+
+use Doctrine\DBAL\Schema\Schema;
+use Doctrine\Migrations\AbstractMigration;
+
+/**
+ * Specify ON DELETE behaviour to handle deletion of parents in associated tables
+ */
+final class Version20210525211216 extends AbstractMigration
+{
+    public function getDescription(): string
+    {
+        return 'Specify ON DELETE behaviour to handle deletion of parents in associated tables';
+    }
+
+    public function up(Schema $schema): void
+    {
+        $this->addSql('ALTER TABLE chill_3party.third_party DROP CONSTRAINT FK_D952467BF5B7AF75');
+        $this->addSql('ALTER TABLE chill_3party.third_party ADD CONSTRAINT FK_D952467BF5B7AF75 FOREIGN KEY (address_id) REFERENCES chill_main_address (id) ON DELETE SET NULL NOT DEFERRABLE INITIALLY IMMEDIATE');
+    }
+
+    public function down(Schema $schema): void
+    {
+        $this->addSql('ALTER TABLE chill_3party.third_party DROP CONSTRAINT fk_d952467bf5b7af75');
+        $this->addSql('ALTER TABLE chill_3party.third_party ADD CONSTRAINT fk_d952467bf5b7af75 FOREIGN KEY (address_id) REFERENCES chill_main_address (id) NOT DEFERRABLE INITIALLY IMMEDIATE');
+    }
+}