usint form_dropdown()

Hello, the table "types" is formed in the following way:

id     |       name   |      description
1      |       one      |       none
2      |       two       |      none
3      |       three    |       NULL
this table is used to fill options in a <select> tag to do this I can use:

 

Code:

echo form_dropdown ('Types',$options);

However $options is an associative array and I can't do the following in a controller:

Code:

// in a controller
$types = new Types ();
$options = $types->findAll();
// in a view
echo form_dropdown ('Types', $options);

what I think I need is a method similar to findAll () but that returns an associative array to avoid what I currently do which is:

Code:

// in a controller
$ types = new Types ();
$ options = [];
foreach ($types->findAll() as $type) {
  $ options = $options + [$type['id'] => $type['name']];
}
// in a view
echo form_dropdown ('Types', $options);

My question is:
Is there a simple way to populate the $options array avoiding doing what I do?
Thank you very much for reading me and your help