community-manage/app/Repositories/CategoryRepository.php

<?php
/**
 * Created by PhpStorm.
 * User: Administrator
 * Date: 2019-06-10
 * Time: 17:40
 */
namespace App\Repositories;

use App\Models\Category;
use App\Models\CategoryTopic;
use Dingo\Api\Http\Response;
use Illuminate\Support\Facades\DB;
use Illuminate\Database\QueryException;

class CategoryRepository {
    public function __construct(Category $category,CategoryTopic $categoryTopic){
        $this->category = $category;
        $this->categoryTopic = $categoryTopic;
    }
    //列表
    public function index($request){
        $perPage = isset($request['per_page']) ? $request['per_page'] : 20;
        $where = [];
        if(isset($request['name'])){
            $where[] = ['name', 'like', "%{$request['name']}%"];
        }
        return $this->category->where($where)->paginate($perPage);
    }
    //详情
    public function view($request){
        return $this->category->where(['id'=>$request['id']])->first();
    }
    //创建
    public function create($request){
        $category = $this->category->where(['name'=>$request['name']])->first();
        if($category){
            return Response::create([
                'message'  => '该分类已存在',
                'status_code'   => 500
            ]);
        }
        $data = [
            'name' => $request['name'],
            'img' => $request['img'],
            //'is_suggest' => $request['is_suggest'],
            'desc' => $request['desc'],
        ];
        if(!empty($request['topic_ids'])){
            $topic_ids = explode(',', $request['topic_ids']);
        }
        DB::beginTransaction();
        try{
            $categoryInfo = $this->category->create($data);
            if($categoryInfo){
                if($topic_ids){
                    $category_topic_data = [];
                    foreach($topic_ids as $value){
                        $category_topic_data[] = [
                            'category_id' => $categoryInfo->id,
                            'topic_id' => $value,
                        ];
                    }
                    $this->categoryTopic->insert($category_topic_data);
                }
            }
            DB::commit();
            return Response::create();
        }catch (QueryException $exception){
            DB::rollBack();
            Log::debug('新增话题分组：'.$exception->getMessage());
            return Response::create([
                'message'  => '新增话题失败，请重试',
                'error' => $exception->getMessage(),
                'status_code'   => 500
            ]);
        }
    }
    //修改
    public function update($request){
        $category = $this->category->where('id', $request['id'])->first();
        if(isset($request['is_suggest']) && $request['is_suggest'] !== null){
            $category->is_suggest = $request['is_suggest'];
        }
        $res = $category->save();
        if($res){
            return Response::create();
        }
    }
}