Get Current Category details in Laravel 5.6 - laravel

Question

I'm trying to fetch current category details.
For example, if the route is example.com/articles/category-slug
In my ArticleCategory Model
public function article(){
return $this->hasMany(Article::class);
}
In Article Model
public function category(){
return $this->belongsTo(ArticleCategory::class, 'category_id');
}
Routes
Route::group(['prefix' => 'articles'], function(){
Route::get('/', 'Frontend\ArticleController#index')->name('articles.index');
Route::get('/{articlecategory}', 'Frontend\ArticleController#category');
Route::get('/{articlecategory}/{slug}', 'Frontend\ArticleController#show');
});
ArticleController
public function category(Request $request, ArticleCategory $articlecategory)
{
$category = $articlecategory->id;
$currentcategory = ArticleCategory::where('id', $category)->first();
return $currentcategory;
}
i have created two categories, 1. Updates 2. News
When i go to the url example.com/articles/updates i receive a error "Page Not Found"
When i change the {{ articlecategory }} to {{ category }} only in the routes file. It shows a blank page without the current category details. How to solve this?
Note: I used the same code earlier in Laravel 5.5 and it worked well. In Laravel 5.6 i see this error. I'm already using a cache killer on chrome and have also cleared cache and views in laravel as suggested by few links on google. However i still see the same error

Answer 1

I found out a way that worked.
I have changed route key value to slug and it worked. I thought that was done by the slugs package i was using. After adding the below code manually to the models it works as expected.
public function getRouteKeyName()
{
return 'slug';
}

Answer 2

If you would like model binding to use a database column other than id when retrieving a given model class, you may override the ‍‍getRouteKeyName method on the Eloquent model:
for example :
class ArticleCategory extends Model
{
public $table='article_category';
public function article(){
return $this->hasMany(Article::class);
}
public function getRouteKeyName()
{
return 'category_slug';
}
}
and my article_category table :
| category_slug | name | id |
|:-------------:|:-------:|:--:|
| cat1 | Updates | 1 |
| cat2 | News | 2 |

Answer 3

your routes should be :
Route::group(['prefix' => 'articles'], function(){
Route::get('/', 'Frontend\ArticleController#index')->name('articles.index')->name('articles');
Route::get('/{category}', 'Frontend\ArticleController#category')->name('category');
Route::get('/{category}/{slug}', 'Frontend\ArticleController#show')->name('category_articals');
});
now you are passing a category_slug to your controller then
example: example.com/articles/news
in your controller :
public function category(Request $request,$category)
{
$category = ArticleCategory::where('slug',$category)->first();
if($category){
// category found , return category to page
return view('category',compact('category'));
}else{
// category not found , return 404 page
return view('error.404');
}
}