About laravel cross-table query problem

I have three tables
article table

Relationship table

Classification table

The object_id in the relationship table corresponds to the id of the article table
term_taxonomy_id corresponds to the term_id of the classification table

Please tell me how I can use eloquent to get the article table and category table through many-to-many method and return them together?

Reply content:

I have three tables
article table

Relationship table

Classification table

The object_id in the relationship table corresponds to the id of the article table
term_taxonomy_id corresponds to the term_id of the classification table

Please tell me how I can use eloquent to get the article table and category table through many-to-many method and return them together?

<code class="php">class Article extends Model{
   public function category()
    {
        return $this->belongsToMany('App\Categorys', 'relations', 'term_taxonomy_id', 'object_id');
    }
}

$res = Article::with('category')->where('id', $id)->get();
</code>

Reference: https://segmentfault.com/q/10..., use with

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