mirror/Part-DB.Part-DB-server
1
0
Fork 1
mirror of https://github.com/Part-DB/Part-DB-server.git synced 2025-06-23 10:18:56 +02:00
Code Issues Projects Releases Packages Wiki Activity Actions 5

Only drop the foreign keys during migration from legacy Part-DB DBs if they really exist

Browse source 
This should fix issue #260
This commit is contained in:
Jan Böhmer 2023-04-08 23:27:10 +02:00
parent 577b841ee0
commit 2717d7d311
2 changed files with 54 additions and 11 deletions
Download patch file Download diff file Expand all files Collapse all files

21
src/Migration/AbstractMultiPlatformMigration.php
View file

@ -141,6 +141,27 @@ abstract class AbstractMultiPlatformMigration extends AbstractMigration
}
}
/**
* Checks if a foreign key on a table exists in the database.
* This method is only supported for MySQL/MariaDB databases yet!
* @param string $table
* @param string $fk_name
* @return bool Returns true, if the foreign key exists
* @throws Exception
*/
public function doesFKExists(string $table, string $fk_name): bool
{
$db_type = $this->getDatabaseType();
if ($db_type !== 'mysql') {
throw new \RuntimeException('This method is only supported for MySQL/MariaDB databases!');
}
$sql = "SELECT COUNT(*) FROM information_schema.TABLE_CONSTRAINTS WHERE CONSTRAINT_SCHEMA = DATABASE() AND CONSTRAINT_NAME = '$fk_name' AND TABLE_NAME = '$table' AND CONSTRAINT_TYPE = 'FOREIGN KEY'";
$result = $this->connection->fetchOne($sql);
return $result > 0;
}
/**
* Returns the database type of the used database.
* @return string|null Returns 'mysql' for MySQL/MariaDB and 'sqlite' for SQLite. Returns null if unknown type