Get number of rows updated by Laravel DB Transaction

Question

I carry out DB transaction like this:

DB::beginTransaction();
try
{
    foreach ($updates as $column_name => $new_value) {
        DB::table('my_table')
            ->where('id', '=', $line_id)
            ->update(array($column_name => $new_value));
    }
    DB::commit();
    return Response::make('Updated', 200);
}
catch (Exception $ex)
{
    DB::rollback();
    return Response::make('Error - '. $ex->getMessage(), 500);
}

Is it possible to get the number of rows affected/updated when I carry out the DB::commit(); and return it in my response?

EDIT

The $updates contains key = value array (where the key is the column name).

If an update like this occurs: UPDATE some_table SET some_number = some_number WHERE id = 1 the resulting affected row count will be 0 (ie nothing really changed).

However, if an update like this occurs: UPDATE some_table SET some_number = some_number + 1 WHERE id = 1 for example, then this will result in affected row count of 1 .

This is what I am trying to determine in my code, once the transaction is committed, has any values been really updated.

Answer 1

NEW

You could update only if the value is different from the past one:

$count = DB::table('my_table')
  ->where('id', '=', $line_id)
  ->where($column_name, '!=', $new_value)
  ->count();

In this way you can say if the given row has a different value and if you are going to change it.

OLD

A count before the query:

$number = DB::table('my_table')
  ->where('id', '=', $line_id)
  ->count();

Return in the response:

return Response::make('Updated ' . $number, 200);