Display category slug in URL instead of ID

I am fairly new to laravel and i have found myself stuck trying to display category slugs instead of the ID

eg: https://ift.tt/2B7ONGa

my website currently shows https://ift.tt/2UysZwb

I have a categories table & posts table table with columns

posts table = | id | title | body | img | post_category_id|


post_categories table = | id | name | catslug |

---

**CONTROLLER**

public function getPostCategory($id) {
    $postCategories = PostCategory::with('posts')
                    ->orderBy('name', 'asc')
                    ->get();

    $posts          = Post::orderBy('id', 'desc')
                    ->where('post_category_id', $id)
                    ->paginate(5);

        // return view
        return view ('articles.category.categoriesposts')->withPosts($posts)->with('postCategories', $postCategories);


}

---

**ROUTE:**

Route::get('articles/category/{id}',  [ 
'uses'  =>  'ArticlesController@getPostCategory' ,
'as'    =>  'pcategory'
] );

I have tried so many methods but and nothing seems to work.

Any help would be really appreciated

Many thanks

Ash

via Chebli Mohamed