101 lines
2.5 KiB
PHP
101 lines
2.5 KiB
PHP
<?php
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namespace App\Models;
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use Illuminate\Database\Eloquent\Model;
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use Illuminate\Database\Eloquent\Relations\BelongsTo;
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use Illuminate\Database\Eloquent\Relations\HasMany;
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/**
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* 商品分类模型（蔬菜/水果/其他，多级分类自关联）
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*/
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class ProductCategoryModel extends Model
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{
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/** 状态：停用 */
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public const int STATUS_DISABLED = 0;
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/** 状态：正常 */
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public const int STATUS_NORMAL = 1;
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protected $table = 'product_category';
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protected $primaryKey = 'id';
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protected $fillable = [
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'parent_id',
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'name',
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'sort',
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'status'
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];
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protected $casts = [
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'parent_id' => 'integer',
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'sort' => 'integer',
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'status' => 'integer',
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'created_at' => 'datetime:Y-m-d H:i:s',
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'updated_at' => 'datetime:Y-m-d H:i:s',
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];
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/**
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* 父分类
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*/
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public function parent(): BelongsTo
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{
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return $this->belongsTo(self::class, 'parent_id', 'id');
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}
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/**
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* 子分类
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*/
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public function children(): HasMany
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{
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return $this->hasMany(self::class, 'parent_id', 'id')->orderBy('sort');
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}
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/**
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* 分类下的商品
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*/
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public function products(): HasMany
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{
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return $this->hasMany(ProductModel::class, 'category_id', 'id');
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}
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/**
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* 获取分类树（树表展示 / 级联下拉选项复用）
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*
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* @param bool $onlyEnabled 是否仅返回启用分类
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* @return array<int, array{id: int, name: string, parent_id: int, sort: int, status: int, children?: array}>
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*/
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public static function getTreeData($columns = ['*'], bool $onlyEnabled = false): array
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{
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$query = static::query()->orderBy('sort')->orderBy('id');
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if ($onlyEnabled) {
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$query->where('status', self::STATUS_NORMAL);
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}
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return static::buildTree($query->get($columns)->toArray());
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}
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/**
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* 将扁平分类列表组装为树
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*
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* @param array<int, array<string, mixed>> $items
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* @param int $parentId
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* @return array<int, array<string, mixed>>
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*/
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public static function buildTree(array $items, int $parentId = 0): array
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{
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$tree = [];
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foreach ($items as $item) {
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if ((int) $item['parent_id'] !== $parentId) {
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continue;
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}
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$children = static::buildTree($items, (int) $item['id']);
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if ($children !== []) {
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$item['children'] = $children;
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}
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$tree[] = $item;
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}
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return $tree;
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}
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}
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