Laravel hasMany relationship custom select result empty - php

Question

I have tables, users, profiles, contacts. 1 user has 1 profile, 1 profile has many contacts, I want to get profile with filtered contact and selected column (I don't want get all column). I success with coding below
UserController.php
$profile = $user->with(['profile.emails', 'profile.phones'])->first();
User.php
public function profile()
{
return $this->hasOne(Profile::class);
}
Profile.php
public function emails()
{
return $this->hasMany(Contact::class)
->where('type', 'email');
}
public function phones()
{
return $this->hasMany(Contact::class)
->where('type', 'phone');
}
result data like this
{
"username": "user",
"email": "user#mail.com",
"profile": {
"first_name": "Alex",
"last_name": "Ariana",
"emails": [
{
"id": 1,
"profile_id": 1,
"type": "email",
"prefix": "Personal",
"value": "alex#mail.com",
"is_primary": 0,
},
{
"id": 2,
"profile_id": 1,
"type": "email",
"prefix": "Business",
"value": "business#mail.com",
"is_primary": 1,
}
],
"phones": [
{
"id": 3,
"profile_id": 1,
"type": "phone",
"prefix": "45",
"value": "564637345345",
"is_primary": 1,
}
]
}
}
but then I add select on the relation like this
public function emails()
{
return $this->hasMany(Contact::class)
->select([DB::raw('IFNULL(prefix, "Email") AS type'), 'value AS url', 'is_primary'])
->where('type', 'email');
}
public function phones()
{
return $this->hasMany(Contact::class)
->select(['prefix', 'value AS number', 'is_primary'])
->where('type', 'phone');
}
then I got empty contact data like this
{
"id": 1,
"username": "user",
"email": "user#mail.com",
"profile": {
"first_name": "Alex",
"last_name": "Ariana",
"emails": [ ],
"phones": [ ]
}
}
Why this is happen?, if I access from user via hasManyThrough it works, but when I use hasMany, it result empty.