Laravel: Add Pagination to Json Response - php

Question

I have an array for showing users' contacts list to each other.
I want to add ->paginate(10) features for json response but I could not find where I must put it.
My index function:
public function index()
{
$contacts = [];
$user = request()->user();
// Loop through the contacts and format each one
Contact::for($user->id)->get()->each(function ($contact) use ($user, &$contacts) {
$friend = $contact->user1_id === $user->id ? $contact->user2 : $contact->user1;
$contacts[] = $friend->toArray() + ['room' => $contact->room->toArray()];
});
return response()->json($contacts);
}

Answer 1

You can create a collection for the contact and use LenfthAwarePaginator
class ContactResourceCollection extends ResourceCollection
{
/**
* Transform the resource into an array.
*
* #param \Illuminate\Http\Request
* #return array
*/
public function toArray($request)
{
$response = [
'data' => $this->collection,
];
if($this->resource instanceof LengthAwarePaginator)
{
$response['pagination'] = [
'total' => $this->resource->total(),
'lastPage' => $this->resource->lastPage(),
'perPage' => $this->resource->perPage(),
'currentPage' => $this->resource->currentPage(),
'nextPageUrl' => $this->resource->nextPageUrl(),
'previousPageUrl' => $this->resource->previousPageUrl(),
];
}
return $response;
}
}
In the controller method add this line:
return new UserResourceCollection($users);

Answer 2

Here is the total code
$contacts = Contact::where('user_id', $user->id)->paginate(12);
if($contacts->count()){
$pageIndex = array();
$lastPage = $contacts->lastPage();
$user = request()->user();
for($i= 2; $i<=$lastPage; $i++){
array_push($pageIndex, $i);
}
return response()->json([
'contacts' => $contacts->map(function ($contact) use ($user) {
if($contact->user1_id === $user->id){
return [
'friend' => $contact->user2,
'room' => $contact->room,
];
} else {
return [
'friend' => $contact->user1,
'room' => $contact->room,
];
}
})->toArray(),
'per_page' => $contacts->perPage(),
'on_first_page' => $contacts->onFirstPage(),
'last_page' => $contacts->lastPage(),
'first_page_url' => $contacts->url(1),
'next_page_url' => $contacts->nextPageUrl(),
'prev_page_url' => $contacts->previousPageUrl(),
'last_page_url' => $contacts->url($contacts->lastPage()),
'total' => $contacts->total(),
'pageIndexArray' => $pageIndex,
'errors' => false,
]);
} else {
// Do Nothing
}
Call
GET 'URL?page='+Page_index to get the response in JS (AJAX)

Answer 3

I am not sure but try : replace get() to paginate(10)
Contact::for($user->id)->paginate(10)->each(function ($contact) use ($user, &$contacts) {
$friend = $contact->user1_id === $user->id ? $contact->user2 : $contact->user1;
$contacts[] = $friend->toArray() + ['room' => $contact->room->toArray()];
});

Answer 4

Can you change the query into:
$contacts = Contact::for($user->id)->paginate(10);
Then after this query you can use for loop for $contact;
foreach ($contacts as $key => $contact)
{
$friend = $contact->user1_id === $user->id ? $contact->user2 : $contact->user1;
$contacts[] = $friend->toArray() + ['room' => $contact->room->toArray()];
}
Paginate first before get into loop/each.