SQLSTATE[42S22]: Column not found: 1054 Unknown column '' in 'order clause' - laravel

Question

I'm trying to make pagination after sorting in my Laravel project , so I did this method, it sorts my data but when I want to see next paginate table it shows me this error
SQLSTATE[42S22]: Column not found: 1054 Unknown column '' in 'order clause'
SELECT * FROM `customers` ORDER BY `` DESC limit 3 OFFSET 3
My method
public function Sortfilter(Request $request)
{
$active = Customer::where('active','=','1')->count();
$inactive = Customer::where('active','=','0')->count();
$customer = Customer::query();
$customer = Customer::orderBy($request->filter,'desc')->paginate(3);
return view('customers.index', compact('customer','inactive','active'));
}
is there a method to save the $request->filter data when I click on next button
EDIT
when i sort my data the URL change like that : http://127.0.0.1:8000/sortCustomer?filter=phone&_token=9xw0q9MKa5ABZc4CwkLaPqf5ko4BhJ4ZaEk0VKYY
and when i click to the pagination button the URL be like that :
http://127.0.0.1:8000/sortCustomer?page=2

Answer 1

The problem is sometimes your $request->filter is empty, so adding a default value when it's empty fixes that.
public function Sortfilter(Request $request)
{
$active = Customer::where('active','=','1')->count();
$inactive = Customer::where('active','=','0')->count();
$customer = Customer::query();
$filter = $request->filter ?: 'created_at';
$customer = Customer::orderBy($filter,'desc')->paginate(3)>appends(['filter' => $request->filter]);
return view('customers.index', compact('customer','inactive','active'));
}

Answer 2

I think you are passing '' (null) in the first parameter of orderBy clause.
please confirm that the value in the $request->filter parameter not null and it should be a column name as in the customer table.

Answer 3

In Laravel there is the option to append query string values to pagination links.
Using this your code could look like this:
public function Sortfilter(Request $request)
{
$active = Customer::where('active','=','1')->count();
$inactive = Customer::where('active','=','0')->count();
$customer = Customer::query();
$customer = Customer::orderBy($request->filter,'desc')->paginate(3)->withQueryString();
return view('customers.index', compact('customer','inactive','active'));
}