Missing data when exporting to excel using Laravel Maatwebsite

Question

I'm exporting data from database to excel and downloading the file. It works but for some reason the "username" data is missing. Any ideas? First time using Laravel Excel. Thanks.

UserExport.php

<?php
namespace App\Exports;
use App\data;
use Maatwebsite\Excel\Concerns\FromCollection;
use Maatwebsite\Excel\Concerns\WithHeadings;


class UsersExport implements FromCollection,WithHeadings
{
/**
* @return \Illuminate\Support\Collection
*/
public function collection()
{
    return data::select(['username', 'password', 'email', 'phone'])->get();
}

public function headings(): array
{
    return [
        'Username',
        'Password',
        'Email',
        'Phone'
    ];
}
}

Controller

public function exportExcel()
{
    return Excel::download(new UsersExport, 'users.xlsx');
}

Data.php

<?php

namespace App;

use Illuminate\Database\Eloquent\Model;

class data extends Model
{
protected $fillable = ['username','password','email','phone'];

protected $table = 'user';
protected $primaryKey = 'username';
public $timestamps = false;

}

Answer 1

Instead of encapsulating your desired columns in an array

public function collection()
{
    return data::select(['username', 'password', 'email', 'phone'])->get();
}

Try changing it into this

public function collection()
{
    return data::select('username', 'password', 'email', 'phone')->get();
}