How to get related rows from attributes table assigned to a certain attribute in Laravel

I have category table, attribute table and attribute_value table,

Category:
id | Catgeory Name 

Attribute:
id| cat_id | Attribute Name

Attribute Table:
id | attr_id | attr_value

Now i want to Display it like this :

Category Name 
Attribute Name 1
Attribute Val 1
Attribute val n
Attribute Name 2
Attribute Val 1
Attribute Val n
..
..

I'm using following model

Attribute:

 public function attr_values()
  {
  return $this->hasMany(AttributeValue::class);
  }

Attribute Values :

 public function attribute()
   {
      return $this->belongsTo(Attribute::class);
   }

In controller i'm getting data using following:

Category::with(['attribute'])->whereIn('id', $ids)->get();

But i'm unable to get the data attributes that are linked to Category and its attributes Values.

via Chebli Mohamed