Why can't I access the model method for the link?

Question

Laravel

BadMethodCallException
Method Illuminate\Database\Eloquent\Collection::category does not exist.
-------------------------------------------------- ------------------------------------

if($take) {
      $builder->take($take);
    }
    
    if($where) {
      $builder->where($where[0],$where[1]);
    }
    
    if($orderBy){
      $builder->orderBy('id','DESC');
    }
    if($pagination) {
      $builder->paginate(Config::get('settings.paginate_home'));
    }
$articles=$builder->category();

roughly speaking, I want to make in one table (selection) then by connection in the second category table
, well, when accessing the function, the psht does not exist, although I registered the connection method in the article model

Answer 1

From what I see, $builderyou have a collection, and the method category()is probably a method of the model, which, in theory, should be in this collection. The collection itself has no such method, hence the Exception. Looks like it will help you $builder->first()->category().

Answer 2

$builder you most likely have selection parameters, and not an article object. Accordingly, the connection here and should not work.