Laravel eloquent and query builder Eager Loading Multiple Relationships with where clause - laravel

Question

I have few tables, they are room_types, rooms, rates, prices I want to get
room_types with rooms with rates and rates with prices where(price room_type_id = room_types.id) . I tried to do something like that
$roomTypeIds = [];
foreach ($hotel->rooms as $room) {
array_push($roomTypeIds, $room->roomtype->id);
}
$roomsByType = RoomType::with(['rooms' => function ($query) {
$query->with(['rates' => function($q) {
$q->with('policy', 'prices');
}]);
}])->whereIn('id', array_unique($roomTypeIds))->get();
but in this example Im getting all prices but I want to get only that prices which room_type_id IS EQUAL TO current room_type.id. So for that I have tried to do some think like this
$roomsByType = RoomType::with(['rooms' => function ($query) {
$query->with(['rates' => function($q) {
$q->with(['policy', 'prices' => function($q1) {
$q1->where('room_type_id', '');
}]);
}]);
}])->whereIn('id', array_unique($roomTypeIds))->get();
But I don't know what to put in where clouse. So are there any way to do this?
And result that I want to have is
[
{
"id": 2,
"name": "Twin/Double",
"created_at": "2017-12-11 08:56:16",
"updated_at": "2017-12-11 08:56:16",
"rooms": [
{
"id": 4,
"hotel_id": 1,
"room_type_id": 2,
"custom_name": null,
"room_name": "3",
"number_of_type": 2,
"number_of_bedrooms": null,
"number_of_livingrooms": null,
"number_of_bathrooms": null,
"created_at": "2017-12-12 06:37:34",
"updated_at": "2017-12-12 06:37:34",
"rates": [
{
"id": 4,
"user_id": 19,
"custom_name": "Default rate",
"price": 0,
"automatic": 0,
"rate_id": null,
"operand": null,
"amount": null,
"currency": null,
"policy_id": 1,
"meal_types": null,
"created_at": "2017-12-12 09:27:31",
"updated_at": "2017-12-12 09:27:29",
"pivot": {
"room_id": 4,
"rate_id": 4
},
"policy": {
"id": 1,
"name": "Free cancellation before 3 / 60 %",
"hotel_id": 1,
"free": 1,
"before_day": 3,
"before_day_price": 60,
"until_day_price": null,
"created_at": "2017-12-08 14:03:31",
"updated_at": "2017-12-08 14:03:31"
},
"prices": [
{
"id": 1,
"rate_id": 4,
"room_type_id": 2,
"from": "2017-12-01 09:18:46",
"to": "2017-12-18 09:18:57",
"amount": 100,
"created_at": "2017-12-18 09:19:11",
"updated_at": "2017-12-18 09:19:12"
},
{
"id": 3,
"rate_id": 4,
"room_type_id": 3,
"from": "2017-12-22 10:36:30",
"to": "2017-12-30 10:36:35",
"amount": 3000,
"created_at": null,
"updated_at": null
}
]
}
]
},
{
"id": 5,
"hotel_id": 1,
"room_type_id": 2,
"custom_name": null,
"room_name": "3",
"number_of_type": 2,
"number_of_bedrooms": null,
"number_of_livingrooms": null,
"number_of_bathrooms": null,
"created_at": "2017-12-12 06:37:34",
"updated_at": "2017-12-12 06:37:34",
"rates": [
{
"id": 4,
"user_id": 19,
"custom_name": "Default rate",
"price": 0,
"automatic": 0,
"rate_id": null,
"operand": null,
"amount": null,
"currency": null,
"policy_id": 1,
"meal_types": null,
"created_at": "2017-12-12 09:27:31",
"updated_at": "2017-12-12 09:27:29",
"pivot": {
"room_id": 5,
"rate_id": 4
},
"policy": {
"id": 1,
"name": "Free cancellation before 3 / 60 %",
"hotel_id": 1,
"free": 1,
"before_day": 3,
"before_day_price": 60,
"until_day_price": null,
"created_at": "2017-12-08 14:03:31",
"updated_at": "2017-12-08 14:03:31"
},
"prices": [
{
"id": 1,
"rate_id": 4,
"room_type_id": 2,
"from": "2017-12-01 09:18:46",
"to": "2017-12-18 09:18:57",
"amount": 100,
"created_at": "2017-12-18 09:19:11",
"updated_at": "2017-12-18 09:19:12"
},
{
"id": 3,
"rate_id": 4,
"room_type_id": 3,
"from": "2017-12-22 10:36:30",
"to": "2017-12-30 10:36:35",
"amount": 3000,
"created_at": null,
"updated_at": null
}
]
}
]
}
]
}
]

Answer 1

Look at the whereHas function instead of using with
https://laravel.com/docs/5.5/eloquent-relationships#querying-relations