getDriverName() !== 'sqlite') { $table->dropForeign(['server_id']); } $table->foreign('server_id')->references('id')->on('servers')->onDelete('set null'); }); } /** * Reverse the migrations. */ public function down(): void { Schema::table('allocations', function (Blueprint $table) { if (Schema::getConnection()->getDriverName() !== 'sqlite') { $table->dropForeign(['server_id']); } $table->foreign('server_id')->references('id')->on('servers'); }); } };