$date-mutators support

[gineign]

setAttribute to support $dates

        // If an attribute is listed as a "date", we'll convert it from a DateTime
        // instance into a form proper for storage on the database tables using
        // the connection grammar's date format. We will auto set the values.
        elseif ($value && $this->isDateAttribute($key)) {
            $value = $this->fromDateTime($value);
        }

https://laravel.com/docs/7.x/eloquent-mutators#date-mutators