php - Laravel eloquent how to get the minimum value that is not NULL? -

this code in product model minimum price value (one product can have multiple price)

public function getlowestattribute () {     return $this->prices->min('price'); } 

but return null rather smallest integer if there null.

basically want achieve this:

[1, null, 2] returns 1

[1, null, 0] returns 0

any suggestion appreciated.

have tried maybe

public function getlowestattribute () {     return $this->prices->where('price','>=',0)->min('price'); }