Laravel: Pagination error when clicking category page - laravel

Question

I'm successfully making pagination, but when I click a category I got an error message:
BadMethodCallException Method
Illuminate\Database\Eloquent\Collection::currentPage does not exist.
This is my view:
Halaman: {{$gmproducts->currentPage()}}<br/>
Jumlah data: {{$gmproducts->total()}}<br/>
Data perhalaman: {{$gmproducts->perPage()}}<br/>
{{$gmproducts->links()}}
This is my controller:
<?php
namespace App\Http\Controllers;
use Illuminate\Http\Request;
use App\Gmproducts;
use App\Gmcategories;
class GoldmartController extends Controller
{
public function index()
{
$gmproducts = Gmproducts::orderBy('id', 'desc')->paginate(10);
$gmcategories = Gmcategories::all();
return view('frontend.pages.goldmart', compact('gmproducts', 'gmcategories'));
}
public function readCategory($slug)
{
$category = Gmcategories::where('slug', $slug)->first();
$gmcategories = Gmcategories::all();
if($gmcategories)
{
$gmproducts = Gmproducts::where('category_id', $category->id)->get();
return view('frontend.pages.goldmart', compact('gmproducts', 'category', 'gmcategories'));
}
else
{
return redirect('/');
}
}
}

Answer 1

In your readCategory function $gmproducts is not paginated:
public function readCategory($slug)
{
$category = Gmcategories::where('slug', $slug)->first();
$gmcategories = Gmcategories::all();
if($gmcategories)
{
$gmproducts = Gmproducts::where('category_id', $category->id)->paginate(10);
return view('frontend.pages.goldmart', compact('gmproducts', 'category', 'gmcategories'));
}
else
{
return redirect('/');
}
}