Retrieves the latest data from a foreign key in a relation - laravel

Question

I want to ask, can I retrieve the last foreign key data in the relation ?.
In this case I want to retrieve the last user transaction data.
for example in the transaction table between 3 months ago and now there are some transaction data as follows.
{
"current_page": 1,
"data": [
{
"id": 8,
"user_id": 1,
"type": "sell",
"created_at": "2019-12-11 11:55:31",
"updated_at": "2019-12-11 11:55:31",
"tax": null,
"invoice_number": null,
"name": "Fredy"
},
{
"id": 7,
"user_id": 1,
"type": "buy",
"created_at": "2019-11-20 17:14:55",
"updated_at": "2019-11-20 17:14:55",
"tax": null,
"tax_percent": "0.90",
"invoice_number": null,
"name": "Fredy"
},
{
"id": 6,
"user_id": 8,
"type": "buy",
"created_at": "2019-11-20 16:28:33",
"updated_at": "2019-11-20 16:28:33",
"tax": null,
"name": "Tommy"
},
{
"id": 5,
"user_id": 2,
"type": "buy",
"created_at": "2019-11-20 15:47:57",
"updated_at": "2019-11-20 15:47:57",
"tax": null,
"name": "Sarah"
},
{
"id": 4,
"user_id": 3,
"type": "buy",
"created_at": "2019-11-20 15:47:31",
"updated_at": "2019-11-20 15:47:31",
"tax": null,
"name": "John Doe"
},
],
}
This is the sample code that i made
public function index()
{
$start = Carbon::now()->subMonths(3)->format('Y-m-d') . ' 00:00:00';
$end = Carbon::now()->format('Y-m-d') . ' 23:59:59';
return $query = DB::table('transaction')
->join('users', 'users.id', '=', 'gold_transaction.user_id')
->select('transaction.id', 'user_id', 'users.*')
->whereBetween('transaction.created_at', [$start, $end])
->whereIn('transaction.id', [DB::raw("SELECT MAX(transaction.id) FROM transaction GROUP BY user_id")])->get();
}
What do i do if i only want to display users who did't make transaction more than 7 days from the last transaction for all users ?
Thank you.

Answer 1

Then you can do it like below,
Get user's transaction
$transaction = User::with(['transactions' => function ($q) use($start, $end){
$q->whereBetween('transactions.created_at', [$start, $end]);
])->find($user_id);
Get all users with their transactions
$transaction = User::with(['transactions' => function ($q) use($start, $end){
$q->whereBetween('transactions.created_at', [$start, $end]);
])->get();
assuming that you have transactions relation in your user model like below
public function transactions() {
return $this->hasMany('App\Transaction', 'user_id');
}