zzwy2/app/controller/Cases.php

<?php

namespace app\controller;

use app\model\{CasesModel, Category};

class Cases extends Base
{
    /**
     * 详情
     *
     * @throws \think\db\exception\ModelNotFoundException
     * @throws \think\db\exception\DbException
     * @throws \think\db\exception\DataNotFoundException
     */
    public function detail($id = 0)
    {
        if ($id <= 0) {
            return $this->error('错误页面');
        }
        $article = CasesModel::getById($id);
        if (empty($article)) {
            return $this->error('无此案例');
        }

        $category = Category::getById($article['category_id']);

        $description = $article['seo_description'] ?: $this->system['seo_description'];
        $keywords    = $article['seo_keywords'] ?: $this->system['seo_keywords'];
        $title       = $article['seo_title'] ?: $article['title'].' | '.$this->system['seo_title'];

        $this->data['images'] = json_decode($article['images'], true);

        // 相关推荐
        $recommendList = $this->recommendList($article, 6, $id);

        $this->data['recommendList'] = $recommendList;
        $this->setSeo($title, $keywords, $description);
        $this->data['item']          = $article;
        $this->data['category']      = $category;
        $this->data['categoryId']    = $category['id'];
        $this->data['categoryPath']  = Category::categoryPath($category['path']);
        $this->data['topCategoryId'] = Category::firstGradeId($category['path'], $category['id']);
        return $this->view($category['template_detail'] ?? '');
    }

    /**
     * 相关推荐
     *
     * @param $article
     * @param  int  $num
     * @param  int  $exceptId
     * @return array
     * @throws \think\db\exception\DataNotFoundException
     * @throws \think\db\exception\DbException
     * @throws \think\db\exception\ModelNotFoundException
     */
    private function recommendList($article, int $num = 0, int $exceptId = 0): array
    {
        return CasesModel::where('category_id', $article['category_id'])
            ->where('visible', 1)
            ->where('recommend', 1)
            ->when($exceptId > 0, function ($q) use ($exceptId) {
                $q->where('id', '<>', $exceptId);
            })
            ->order('sort', 'desc')
            ->order('id', 'desc')
            ->limit($num)
            ->select()->toArray();
    }

    //文章列表接口，获取栏目下文章列表
    public function getList()
    {
        $categoryId = input('category_id/d', 0);
        $page       = input('page/d', 1);
        $size       = input('size/d', 10);

        if ($categoryId <= 0) {
            return $this->json(1, '参数错误');
        }
        $category = Category::getById($categoryId);
        if (empty($category)) {
            return $this->json(2, '栏目不存在');
        }

        $categoryIds = Category::where('parent_id', $categoryId)->column('id');
        $items = CasesModel::whereIn('category_id', $categoryIds)
                        ->where('visible', 1)
                        ->page($page, $size)
                        ->select()
                        ->toArray();

        foreach ($items as $item) {
            $item['image'] = $this->isMobile ? $item['image_mobile'] : $item['image'];
        }

        return $this->json(0, 'ok', $items);
    }
}