Laravel Eloquent Get grouped by Relation Data - laravel

Question

I am trying to get data with eager loading grouped by relation. Means, I want to eager load the relation in group by of a column. I have tried this code,
$customer = Customer::with(['orders' => function($query) {
$query->groupBy('shop_id');
}])->where('id', $id)->get();
Here the DB relation is,
Customer Has Many Orders (One to Many)
As an example, if I want to groupBy shop_id, I am expecting data in below format:
customer1 =>
otherProperties,
orders =>[
shop_id1 => [
order1,
order2 ...
],
shop_id2 => [
order5
]
]
But I am getting normal eager loaded data, like,
customer1 =>
otherProperties,
orders => [
order1,
order2,
order5,
]
Can anyone help me in this regard?
I can achieve similar result using raw query or php. But how I can achieve this using eloquent?

Answer 1

The groupBy happen on the collection and not on the query itself.
First suggestion : Create a custom scope
You could create a custom scope into your model with some Raw expressions : https://laravel.com/docs/5.8/queries#raw-expressions . Then, you will be able to do this:
$customer = Customer::with('newScope')->find($id);
Did you know that $customer = Customer::where('id', $id)->get()
return a collection of model and $customer = Customer::find($id)
return a single model?
$customer = Customer::where('id', $id)->get();
$customer = { [0] => {data} };
$customer = Customer::find($id);
$customer = { data };
Second suggestion : Use groupBy on the collection after the query
$customer = Customer::with('orders')->find($id);
$customer->orders = $customer->orders->groupBy('shop_id'));