Topic and article relationship

app/Topic.php

@@ -3,8 +3,12 @@
 namespace App;
 
 use Illuminate\Database\Eloquent\Model;
+use App\Article;
 
 class Topic extends Model
 {
-    //
+    public function articles()
+    {
+        return $this->belongsToMany(Article::class);
+    }
 }