zzwy2/app/model/PositionModel.php

<?php
namespace app\model;

use think\Paginator;

class PositionModel extends Base
{
    protected $name = 'position';

    public static function onAfterInsert($item)
    {
        $item->sort  = $item->id;
        $item->save();
    }

    public static function getPaginateList($categoryId, $per = 20,  $isSample = false)
    {
        $paginate = [
            'list_rows' => $per,
            'query'     => ['category_id' => $categoryId]
        ];
        return self::where('category_id', $categoryId)->order('sort', 'desc')->paginate($paginate, $isSample);
    }

    public static function getByCategoryId($categoryId, $onlyVisible = false, $pre = 50)
    {
        $items = self::where('category_id', $categoryId)
        ->when($onlyVisible, function($query){
            $query->where('visible', 1);
        })
        ->order('sort', 'desc')
        ->limit($pre)
        ->select();
        return $items->toArray();
    }

    /**
     * 获取列表
     * @param  int  $categoryId  分类ID
     * @param  int  $per  每页数量
     * @param  string  $keyword  关键词
     * @param  array  $param  类型：置顶、热门、推荐 ['top','hot','recommend']
     * @param  int  $status  状态，-1表示不限制
     * @param  array  $orderList  排序
     * @param  bool  $onlyChild  仅获取下级 默认true false=获取所有后代分类
     * @return Paginator
     */
    public static function getList(int $categoryId, int $per = 20, string $keyword = '', array $param = [], int $status = -1, array $orderList = ['a.sort' => 'desc'], bool $onlyChild = true)
    {
        $whereMap  = [];
        $pageParam = [];
        if (is_numeric($categoryId) && $categoryId > 0) {
            $children = Category::getChildrenByParentId($categoryId, $onlyChild);
            if (!empty($children)) {
                $categoryIds = [$categoryId];
                foreach ($children as $child) {
                    if ($child['model_id'] == Model::MODEL_PRODUCT) {
                        $categoryIds[] = $child['id'];
                    }
                }
                $whereMap[] = ['a.category_id', 'in', $categoryIds];
            } else {
                $whereMap[] = ['a.category_id', '=', $categoryId];
            }
            $pageParam['category_id'] = $categoryId;
        }
        if (!empty($keyword)) {
            $whereMap[]           = ['a.title', 'like', '%'.$keyword.'%'];
            $pageParam['keyword'] = $keyword;
        }
        if (is_array($param) && count($param) > 0) {
            $pageParam['param'] = $param;
            foreach ($param as $vo) {
                if (in_array($vo, ['top', 'hot', 'recommend'], true)) {
                    $whereMap[] = ["a.{$vo}", '=', 1];
                }
            }
        }
        $paginate = [
            'list_rows' => $per,
            'query'     => $pageParam
        ];

        return self::alias('a')
            ->leftJoin('category c', 'c.id = a.category_id')
            ->when(count($whereMap) > 0, function ($query) use ($whereMap) {
                $query->where($whereMap);
            })
            ->when($status != -1, function ($query) use ($status) {
                $query->where('a.visible', $status);
            })
            ->order($orderList)
            ->field('a.*, c.title as category_title')
            ->paginate($paginate, false);
    }
}