community-manage/app/Repositories/TopicRepository.php

<?php
/**
 * Created by PhpStorm.
 * User: Administrator
 * Date: 2019-06-10
 * Time: 18:12
 */

namespace App\Repositories;

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

class TopicRepository {
    public function __construct(Topic $topic,CategoryTopic $categoryTopic){
        $this->topic = $topic;
        $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']}%"];
        }
        if(isset($request['is_suggest'])){
            $where[] = ['is_suggest', $request['is_suggest']];
        }
        if(isset($request['is_hot'])){
            $where[] = ['is_hot', $request['is_hot']];
        }
        if(isset($request['is_open'])){
            $where[] = ['is_open', $request['is_open']];
        }
        return $this->topic->where($where)->paginate($perPage);
    }
    public function create($request){
        $topic = $this->topic->where(['name'=>$request['name']])->first();
        if($topic){
            return Response::create([
                'message'  => '该话题已存在',
                'status_code'   => 500
            ]);
        }

        $data = [
            'name' => $request['name'],
            'img' => $request['img'],
            'desc' => $request['desc'],
        ];
        if(isset($request['category_ids'])){
            $category_ids = explode(',', $request['category_ids']);
        }
        DB::beginTransaction();
        try{
            $topicInfo = $this->topic->create($data);
            if($topicInfo){
                if($category_ids){
                    $category_topic_data = [];
                    foreach($category_ids as $value){
                        $category_topic_data[] = [
                            'category_id' => $value,
                            'topic_id' => $topicInfo->id,
                        ];
                    }
                    $this->categoryTopic->insert($category_topic_data);
                }
            }
            DB::commit();
            return Response::create();
        }catch (QueryException $exception){
            DB::rollBack();
            Log::debug('新增话题：'.$exception->getMessage());
            return Response::create([
                'message'  => '新增话题，请重试',
                'error' => $exception->getMessage(),
                'status_code'   => 500
            ]);
        }
    }
    //修改
    public function update($request){
        $topic = $this->topic->where('id', $request['id'])->first();
        if(!$topic){
            return Response::create([
                'message'  => '该话题不存在',
                'status_code'   => 500
            ]);
        }
        if(isset($request['is_open']) && $request['is_open'] !== null){
            $topic->is_open = $request['is_open'];
        }
        if($request['type']){
            if($topic->is_open == 0){
                return Response::create([
                    'message'  => '该话题未开启',
                    'status_code'   => 500
                ]);
            }
            if(isset($request['type']) == 1){
                $topic->is_suggest = $request['is_suggest'];
            }
            if(isset($request['type']) == 2){
                $topic->is_hot = $request['is_hot'];
            }
        }

        $res = $topic->save();
        if($res){
            return Response::create();
        }
    }
}