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modules/Mall/Models/Goods.php

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+<?php
+
+namespace Modules\Mall\Models;
+
+use App\Models\Model;
+use App\Traits\HasClicks;
+use App\Traits\HasCovers;
+use App\Traits\HasStatus;
+use Illuminate\Database\Eloquent\Builder;
+use Illuminate\Database\Eloquent\Relations\BelongsTo;
+use Illuminate\Database\Eloquent\Relations\BelongsToMany;
+use Illuminate\Database\Eloquent\Relations\HasMany;
+use Illuminate\Database\Eloquent\SoftDeletes;
+use Illuminate\Support\Facades\DB;
+use Modules\Mall\Models\Traits\BelongsToShop;
+use Overtrue\LaravelVersionable\Versionable;
+
+class Goods extends Model
+{
+
+    use BelongsToShop,
+        HasStatus,
+        HasClicks,
+        HasCovers,
+        Versionable,
+        SoftDeletes;
+
+    /**
+     * 规格，支持单规格和多规格
+     */
+    const TYPE_SINGLE   = 1;
+    const TYPE_MULTIPLE = 2;
+    const TYPE_MAP      = [
+        self::TYPE_SINGLE => '单规格',
+        //        self::TYPE_MULTIPLE => '多规格',
+    ];
+    /**
+     * 状态
+     */
+    const STATUS_AUDIT  = 0;
+    const STATUS_UP     = 1;
+    const STATUS_REJECT = 2;
+    const STATUS_DOWN   = 3;
+    const STATUS_MAP    = [
+        self::STATUS_AUDIT  => '审核中',
+        self::STATUS_UP     => '上架',
+        self::STATUS_REJECT => '驳回',
+        self::STATUS_DOWN   => '下架',
+    ];
+    /**
+     * 库存的扣减方式
+     */
+    const DEDUCT_STOCK_ORDER = 1;
+    const DEDUCT_STOCK_PAID  = 2;
+    const DEDUCT_STOCK_MAP   = [
+        self::DEDUCT_STOCK_ORDER => '下单减库存',
+        self::DEDUCT_STOCK_PAID  => '付款减库存',
+    ];
+    /**
+     * 支付方式
+     */
+    const PAY_TYPE_ONLINE  = 1;
+    const PAY_TYPE_OFFLINE = 2;
+    const PAY_TYPE_ALL     = 3;
+    const PAY_TYPE_MAP     = [
+        self::PAY_TYPE_ONLINE  => '在线支付',
+        self::PAY_TYPE_OFFLINE => '货到付款',
+        self::PAY_TYPE_ALL     => '在线支付/货到付款',
+    ];
+
+    /**
+     * 商品类型
+     */
+    const CHANNEL_NORMAL = 1;
+    const CHANNEL_SCORE  = 2;
+    const CHANNEL_FREE   = 3;
+
+    const Channels = [
+        self::CHANNEL_NORMAL => '正常',
+        self::CHANNEL_SCORE  => '积分兑换',
+        self::CHANNEL_FREE   => '赠送',
+    ];
+
+    /**
+     * 展示列表，从数据库查询的字段
+     */
+    const LIST_SELECT_FIELDS = [
+        'id',
+        'name',
+        'description',
+        'cover',
+        'shop_id',
+        'original_price',
+        'sales',
+        'clicks',
+    ];
+
+    protected $table = 'mall_goods';
+
+    protected $casts = [
+        'pictures' => 'json',
+    ];
+
+    protected $with = [
+        'specs',
+        'skus',
+    ];
+
+    /**
+     * 不参与版本记录的字段
+     *
+     * @var array|string[]
+     */
+    protected array $dontVersionable = ['clicks', 'updated_at'];
+
+    /**
+     * Notes   : 商品分类
+     *
+     * @Date   : 2021/5/12 9:48 上午
+     * @Author : < Jason.C >
+     * @return \Illuminate\Database\Eloquent\Relations\BelongsTo
+     */
+    public function category(): BelongsTo
+    {
+        return $this->belongsTo(Category::class);
+    }
+
+    /**
+     * Notes   : 标签
+     *
+     * @Date   : 2021/5/12 10:14 上午
+     * @Author : < Jason.C >
+     * @return \Illuminate\Database\Eloquent\Relations\BelongsToMany
+     */
+    public function tags(): BelongsToMany
+    {
+        return $this->belongsToMany(Tag::class, 'mall_goods_tag');
+    }
+
+    /**
+     * Notes   : 所属品牌
+     *
+     * @Date   : 2021/5/11 11:00 上午
+     * @Author : < Jason.C >
+     * @return \Illuminate\Database\Eloquent\Relations\BelongsTo
+     */
+    public function brand(): BelongsTo
+    {
+        return $this->belongsTo(Brand::class);
+    }
+
+    /**
+     * Notes   : 运费模板
+     *
+     * @Date   : 2021/5/11 11:04 上午
+     * @Author : < Jason.C >
+     * @return \Illuminate\Database\Eloquent\Relations\BelongsTo
+     */
+    public function delivery(): BelongsTo
+    {
+        return $this->belongsTo(Delivery::class);
+    }
+
+    /**
+     * Notes   : 商品属性
+     *
+     * @Date   : 2021/5/12 11:31 上午
+     * @Author : < Jason.C >
+     * @return \Illuminate\Database\Eloquent\Relations\HasMany
+     */
+    public function specs(): HasMany
+    {
+        return $this->hasMany(GoodsSpec::class);
+    }
+
+    /**
+     * Notes   : 商品SKU
+     *
+     * @Date   : 2021/5/11 1:47 下午
+     * @Author : < Jason.C >
+     * @return \Illuminate\Database\Eloquent\Relations\HasMany
+     */
+    public function skus(): HasMany
+    {
+        return $this->hasMany(GoodsSku::class);
+    }
+
+    /**
+     * Notes   : 获取规格的价格区间
+     *
+     * @Date   : 2021/5/13 11:49 上午
+     * @Author : < Jason.C >
+     * @return string
+     */
+    public function getPriceAttribute(): string
+    {
+        if ($this->type === self::TYPE_SINGLE) {
+            return $this->price_min;
+        } else {
+            return $this->price_min.'|'.$this->price_max;
+        }
+    }
+
+    /**
+     * Notes   : 返回最低积分
+     *
+     * @Date   : 2021/5/20 11:26 上午
+     * @Author : < Jason.C >
+     * @return float
+     */
+    public function getScoreAttribute(): float
+    {
+        return $this->skus->min('score') ?? 0;
+    }
+
+    /**
+     * Notes   : 最低价格
+     *
+     * @Date   : 2021/5/13 11:50 上午
+     * @Author : < Jason.C >
+     * @return float
+     */
+    public function getPriceMinAttribute(): float
+    {
+        return $this->skus->min('price') ?? 0;
+    }
+
+    /**
+     * Notes   : 最高价格
+     *
+     * @Date   : 2021/5/13 11:51 上午
+     * @Author : < Jason.C >
+     * @return float
+     */
+    public function getPriceMaxAttribute(): float
+    {
+        return $this->skus->max('price') ?? 0;
+    }
+
+    /**
+     * Notes   : 按价格排序
+     *
+     * @Date   : 2021/5/17 14:18
+     * @Author : Mr.wang
+     * @param  Builder  $query
+     * @param  string  $direction
+     * @return Builder
+     */
+    public function scopeOrderByPrice(Builder $query, string $direction = 'asc'): Builder
+    {
+        if ($direction) {
+            $price = DB::raw('MIN(price) as min_price');
+        } else {
+            $price = DB::raw('MAX(price) as min_price');
+        }
+
+        $minPrice = DB::table('mall_goods_skus')
+            ->select('goods_id', $price)
+            ->whereNull('deleted_at')
+            ->groupBy('goods_id');
+
+        return $query->joinSub($minPrice, 'min_price', function ($join) {
+            $join->on('mall_goods.id', '=', 'min_price.goods_id');
+        })->orderBy('min_price', $direction);
+    }
+
+}