Yii2 hasMany without link fields - activerecord

Question

User model has follow relation:
public function getWorkload() : ActiveQuery
{
return $this->hasMany(ScheduleWorkload::className(), ['staff_id' => 'id']);
}
Find method:
$staffs = User::find()
->alias('u')
->joinWith(['workload as uw' => function($q) {
$q->select(['uw.staff_id', 'uw.date', 'uw.time_ranges']);
}], true)
->select([
'u.id',
'CONCAT(u.first_name, \' \', u.last_name) as name',
'u.first_name',
'u.last_name',
'u.undelivered_messages',
])
->where(['u.is_staff' => 1])
->asArray()
->all()
;
I need get data without uw.staff_id in result set? Is it possible without post-processing?
UPDATE:
Result set that I have
I need "workload" as array parameter but do not use post-processing and just exclude "staff_id" from result set.
Raw sql:
SELECT `u`.`id`, `u`.`undelivered_messages`
FROM `user` `u`
LEFT JOIN `schedule_workload` `uw` ON `u`.`id` = `uw`.`staff_id`
WHERE `u`.`is_staff`=1

Answer 1

You can't do in Yii without any post-processing because ActiveQuery will search for foreign key in nested query result to build nested arrays for joined relation.
The most convenient way for you is to use ArrayHelper:
$staffs = User::find()
->alias('u')
->joinWith(['workload')
->where(['u.is_staff' => 1])
->all();
return \yii\helpers\ArrayHelper::toArray($staffs, [
User::className() => [
'id',
'first_name',
'last_name',
'name' => function ($user) {
return $user->first_name . ' ' . $user->last_name
},
'undelivered_messages',
'workload',
],
ScheduleWorkload::className() => [
'date',
'time_ranges',
'comment'
]
], true);