MyModel::distinct()->get(['column_name']);
// Retrieve the first task
$task = Task::first();
$newTask = $task->replicate();
$newTask->project_id = 16; // the new project_id
$newTask->save();
$harmFlag = HarmFlag::firstOrNew(['post_id' => $postId, 'harm_id' => $harm_id]);
$harmFlag->gif_flag = $gif_flag;
$harmFlag->save();
or
$harmFlag = HarmFlag::updateOrCreate(['post_id' => $postId, 'harm_id' => $harm_id]);
$harmFlag->gif_flag = $gif_flag;
$harmFlag->save();