first commit

app/Models/Category.php

@@ -0,0 +1,70 @@
+<?php
+
+namespace App\Models;
+
+use Database\Factories\CategoryFactory;
+use Illuminate\Database\Eloquent\Attributes\Fillable;
+use Illuminate\Database\Eloquent\Attributes\RouteKey;
+use Illuminate\Database\Eloquent\Collection;
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\BelongsTo;
+use Illuminate\Database\Eloquent\Relations\HasMany;
+use Illuminate\Support\Str;
+
+#[Fillable(['parent_id', 'name', 'slug', 'description', 'meta_title', 'meta_description'])]
+#[RouteKey('slug')]
+class Category extends Model
+{
+    /** @use HasFactory<CategoryFactory> */
+    use HasFactory;
+
+    protected static function booted(): void
+    {
+        static::creating(function (Category $category) {
+            if (empty($category->slug)) {
+                $category->slug = Str::slug($category->name);
+            }
+        });
+    }
+
+    /**
+     * @return BelongsTo<Category, $this>
+     */
+    public function parent(): BelongsTo
+    {
+        return $this->belongsTo(Category::class, 'parent_id');
+    }
+
+    /**
+     * @return HasMany<Category, $this>
+     */
+    public function children(): HasMany
+    {
+        return $this->hasMany(Category::class, 'parent_id');
+    }
+
+    /**
+     * @return HasMany<Post, $this>
+     */
+    public function posts(): HasMany
+    {
+        return $this->hasMany(Post::class);
+    }
+
+    /**
+     * @return Collection<int, Category>
+     */
+    public function ancestors(): Collection
+    {
+        $ancestors = collect();
+        $category = $this->parent;
+
+        while ($category !== null) {
+            $ancestors->prepend($category);
+            $category = $category->parent;
+        }
+
+        return $ancestors;
+    }
+}