User: Fix and optimize user deletion logic - refs BT#22215

src/CoreBundle/Migrations/Schema/V200/Version20241230175100.php

@@ -0,0 +1,69 @@
+<?php
+
+declare(strict_types=1);
+
+/* For licensing terms, see /license.txt */
+
+namespace Chamilo\CoreBundle\Migrations\Schema\V200;
+
+use Chamilo\CoreBundle\Migrations\AbstractMigrationChamilo;
+use Doctrine\DBAL\Schema\Schema;
+
+final class Version20241230175100 extends AbstractMigrationChamilo
+{
+    public function getDescription(): string
+    {
+        return 'Fix cascading delete for c_lp_category_rel_user table foreign key dynamically';
+    }
+
+    public function up(Schema $schema): void
+    {
+        // Find the foreign key name dynamically
+        $foreignKeyName = $this->getForeignKeyName('c_lp_category_rel_user', 'user_id');
+
+        if ($foreignKeyName) {
+            $this->addSql("ALTER TABLE c_lp_category_rel_user DROP FOREIGN KEY `$foreignKeyName`");
+        }
+
+        // Add the updated foreign key
+        $this->addSql('
+            ALTER TABLE c_lp_category_rel_user
+            ADD CONSTRAINT FK_83D35829A76ED395
+            FOREIGN KEY (user_id)
+            REFERENCES user(id)
+            ON DELETE SET NULL
+            ON UPDATE CASCADE
+        ');
+    }
+
+    public function down(Schema $schema): void
+    {
+        $this->addSql('ALTER TABLE c_lp_category_rel_user DROP FOREIGN KEY FK_83D35829A76ED395');
+
+        $this->addSql('
+            ALTER TABLE c_lp_category_rel_user
+            ADD CONSTRAINT c_lp_category_rel_user_ibfk_1
+            FOREIGN KEY (user_id)
+            REFERENCES user(id)
+            ON DELETE SET NULL
+        ');
+    }
+
+    private function getForeignKeyName(string $tableName, string $columnName): ?string
+    {
+        $query = "
+            SELECT CONSTRAINT_NAME
+            FROM information_schema.KEY_COLUMN_USAGE
+            WHERE TABLE_NAME = :tableName
+            AND COLUMN_NAME = :columnName
+            AND TABLE_SCHEMA = DATABASE()
+        ";
+
+        $result = $this->connection->fetchOne($query, [
+            'tableName' => $tableName,
+            'columnName' => $columnName,
+        ]);
+
+        return $result ?: null;
+    }
+}