Q: How to show a special string for a column when exporting using laravel-excel? I am using laravel excel to export data from 'User' table. A query needs to be run and all the records that match the query will return. 
My code is like 
class UsersExport implements FromQuery
{
    use Exportable;

    public function __construct(string $code)
    {
        $this->code = $code;
    }

    public function query()
    {
        return Tantousya::query()->where('code','>=',$this->code); 
    }
}

It is working perfectly and giving me correct data. 
However, in the User table there is a "password" column. The clients want me to show strings like "*****" instead of showing the encrypted password. If no password is set then show ""(a blank string).
To illustrate it better, my current output is like,

My desired output is like, 

How can I change my query function in such a way that I get my desired output? 

A: I think you should try something like this:
public function query()
{
    return Tantousya::query()->select(['*', \DB::raw("'***' as password")])->where('code','>=',$this->code); 
}

The second way is to implement FromCollection then use the map method to change values.
Something like this:
use Maatwebsite\Excel\Concerns\FromCollection;

class UserExport implements FromCollection {

    public function collection()
    {
        return User::select(['*'])
            ->get()
            ->map(function($item) {
                $collection = $item;
                $collection['password'] = '***';
                return $collection;
            });
    }
}

