ErrorException in HasRelationships.php

I need this error, but I'm not sure if it has to do with a relationship or something else?

Mistake

ErrorException in HasRelationships.php line 487:
Class 'Company' not found 

      

        
        
        
      

    

User.php

public function company(){ $this->belongsTo('Company', 'user_id'); }

Company.php

public function user(){ $this->belongsTo('User') ; }

Now my goal is to hide the "Create List" button in the navigation bar if the user is not related to the companies table. I know I can do this with roles or middleware, but a friend of mine sent me something like this and told me it was easier to do.

if(count($user->company) > 0) 

      

        
        
        
      

    

So now I'm trying to figure out how, but still can't figure out how to fix the error.

Navigation type

@inject('user', 'App\User')
   @if(count($user->company) > 0)
     <li><a href="{{route('listings.create', [$area])}}">Add listing</a></li>
   @endif

      

        
        
        
      

    

/// UPDATE

It didn't find the 'Company' class because I didn't use full namespaces in my relationship, but now I am getting this new error.

Mistake

ErrorException in HasAttributes.php line 403:
Relationship method must return an object of type Illuminate\Database\Eloquent\Relations\Relation 

(View: /Users/username/Desktop/laravel/resources/views/layouts/partials/_navigation.blade.php) 
(View: /Users/username/Desktop/laravel/resources/views/layouts/partials/_navigation.blade.php) 
(View: /Users/username/Desktop/laravel/resources/views/layouts/partials/_navigation.blade.php)