Version 1.0.0

app/Models/Category.php

@@ -0,0 +1,25 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\BelongsToMany;
+use Illuminate\Database\Eloquent\Relations\MorphMany;
+
+class Category extends Model
+{
+    protected $fillable = ['title', 'slug'];
+
+    public function articles(): BelongsToMany
+    {
+        return $this->belongsToMany(Article::class, 'category_article')
+            ->using(CategoryArticle::class)
+            ->withPivot('sort_order')
+            ->orderBy('category_article.sort_order');
+    }
+
+    public function navigationItems(): MorphMany
+    {
+        return $this->morphMany(NavigationItem::class, 'navigable');
+    }
+}