86 lines
2.5 KiB
PHP
86 lines
2.5 KiB
PHP
<?php
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namespace Peidikeji\Goods\Models;
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use Dcat\Admin\Traits\ModelTree;
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use Illuminate\Database\Eloquent\Model;
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class GoodsCategory extends Model
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{
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use ModelTree;
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protected $table = 'goods_category';
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protected $fillable = ['name', 'image', 'description', 'parent_id', 'level', 'sort', 'path', 'is_enable'];
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protected $titleColumn = 'name';
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protected $orderColumn = 'sort';
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public $timestamps = false;
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protected static function boot()
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{
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parent::boot();
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// 监听 Category 的创建事件，用于初始化 path 和 level 字段值
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static::creating(function ($category) {
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// 如果创建的是一个根类目
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if (!$category->parent_id) {
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// 将层级设为 1
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$category->level = 1;
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// 将 path 设为 -
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$category->path = '-';
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} else {
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// 将层级设为父类目的层级 + 1
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$category->level = $category->parent->level + 1;
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// 将 path 值设为父类目的 path 追加父类目 ID 以及最后跟上一个 - 分隔符
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$category->path = $category->parent->path.$category->parent_id.'-';
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}
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});
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static::deleting(function ($category) {
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// 所有下级分类
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$ids = GoodsCategory::where('path', 'like', '%-'.$category->id.'-%')->pluck('id');
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// 检查下级分类是否包含商品
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if (Goods::whereIn('category_id', array_merge($ids, [$category->id]))->exists()) {
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// todo 阻止删除该分类
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}
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// 删除所有下级分类
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GoodsCategory::where('path', 'like', '%-'.$category->id.'-%')->delete();
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});
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}
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public static function selectOptions(\Closure $closure = null, $rootText = null)
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{
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$options = (new static())->withQuery($closure)->buildSelectOptions();
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$list = collect($options);
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if ($rootText !== false) {
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$rootText = $rootText ?: admin_trans_label('root');
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$list->prepend($rootText, 0);
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}
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return $list->all();
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}
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public function parent()
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{
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return $this->belongsTo(self::class, 'parent_id');
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}
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public function children()
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{
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return $this->hasMany(self::class, 'parent_id');
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}
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public function goods()
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{
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return $this->hasMany(Goods::class, 'category_id');
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}
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public function scopeOrder($q)
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{
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return $q->orderBy('sort');
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}
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}
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