Pagination coming from AJAX request not working properly -- Laravel 5.6

Question

I'm using Laravel 5.6 -- Jquery Ajax

Here's the point

I'm having a search input placed in my navbar there's an eventlistener('keyup') on it.

Everytime keyup is fired, an AJAX GET request is send to

url : '{{action('PostController@searchAdmin')}}'

From web.php : Route::get('/search/admin', 'PostController@searchAdmin') ;

I made the return of that action a partial with data

return view('back.partials.searchResult', ['posts' => $posts, 'trashed' => $trashed]);

And I replace the content of the main tag with that partial

Everything is working properly except when the result count is greater than 10 (the breakpoint of pagination).

Pagination control links are all pointing to "search/admin?page=x" and when I click on it, this error is showing

Undefined variable: posts

I used $posts->links() to show the controls

Answer 1

I found a solution so I post it

In web.php

Route::get('/search', function(Request $request) {
    $search = $request->search;
    $trashed = Post::trash()->count();
    $posts = Post::notTrash()
        ->where('title', 'like', '%' . $search . "%")
        ->orWhere('post_type' , 'like', '%' . $search . '%')
        ->paginate(10);


    $posts->withPath('?search=' . $search);
    return view('back.partials.searchResult', ['posts' => $posts, 'trashed' => $trashed, 'search' => $search]);
});

This code was for test purpose and will be soon exported in a new controller called SearchController

In my PostController

public function index(Request $request)
{

    // GET parameters
    $paginate = $request->input('paginate') ?? 10;
    $search = $request->input('search') ?? null;

    if($search !== null) {
        $posts = $this->checkCategories($paginate, $search);
    } else {
        $posts = Post::notTrash()->orderBy('id', 'ASC')->paginate($paginate);
    }
    $trashed = Post::trash()->count();
    $posts->withPath('?search=' . $search);

    return view('back.index', ['posts' => $posts, 'trashed' => $trashed, 'search' => $search]);
}

Working with

private function checkCategories($paginate, $search)
{
    $categories = Category::all();
    foreach ($categories as $category) {

        if(strpos(strtolower($category->name), $search) === false) {
// @TODO: Change for stripos 
            $posts = Post::notTrash()
                ->where('title', 'like', '%' . $search . '%')
                ->orWhere('post_type', 'like', '%' . $search . '%')
                ->paginate($paginate);
        } else {
            return Category::find($category->id)->posts()->paginate($paginate);
        }
    }

    return $posts;

}

The index method now accept Request to handle get parameters when they are some.

In my views

   @if($search !== null)
        {{ $posts->appends($search)->links() }}
    @else
        {{ $posts->links() }}
    @endif

Now replace

{{ $posts->links() }}

The solution was $var->**withPath()** and handling GET parameters