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modules/Mall/Models/Region.php

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+<?php
+
+namespace Modules\Mall\Models;
+
+use App\Models\Model;
+use GeneaLabs\LaravelModelCaching\Traits\Cachable;
+use Illuminate\Database\Eloquent\Relations\BelongsTo;
+use Illuminate\Database\Eloquent\Relations\HasMany;
+
+class Region extends Model
+{
+
+    use Cachable;
+
+    protected $table      = 'mall_regions';
+
+    public    $timestamps = false;
+
+    /**
+     * Notes: 上级地区
+     * @Author: <C.Jason>
+     * @Date  : 2019/11/19 3:01 下午
+     * @return \Illuminate\Database\Eloquent\Relations\BelongsTo
+     */
+    public function parent(): BelongsTo
+    {
+        return $this->belongsTo(__CLASS__, 'parent_id');
+    }
+
+    /**
+     * Notes: 下级地区
+     * @Author: <C.Jason>
+     * @Date  : 2019/11/19 3:01 下午
+     * @return \Illuminate\Database\Eloquent\Relations\HasMany
+     */
+    public function children(): HasMany
+    {
+        return $this->hasMany(__CLASS__, 'parent_id');
+    }
+
+    /**
+     * Notes   : 获取区划层级名称
+     * @Date   : 2021/5/6 1:47 下午
+     * @Author : < Jason.C >
+     * @return string
+     */
+    public function getDepthNameAttribute(): string
+    {
+        switch ($this->depth) {
+            case 0:
+                return '国家级';
+            case 1:
+                return '省级';
+            case 2:
+                return '市级';
+            case 3:
+                return '区县';
+            default:
+                return '';
+        }
+    }
+
+}