fastadmin_php专项

1.时间的判断,还有就是在php这边如何去拿前端html元素上面的值

input('$row.borrowtime');

php 复制代码

      // 创建两个 DateTime 对象
        $row_expecttime = new \DateTime(input('$row.borrowtime'));
        $par_expecttime = new \DateTime( $params['expecttime']);
//        // 计算两个日期之间的差异
//        $diff = $par_expecttime->diff($row_expecttime);

        // 计算总的天数差异
        $totalDays = $par_expecttime->diff($row_expecttime);
        if ($totalDays->invert == 0){
            $this->error('续借时间不能小于原归还时间');
        }
        if ($totalDays->m >= 7){
            $this->error('借阅总时间最多不能超过7个月');
        }

2.批量存储数据的2中方法

2.1第一种数据量不大的话，就直接分别放到数组，然后一起sevaAll()一起存了算了

php 复制代码

        $books_ids = explode(',', $params['books_id']);
        if(count($books_ids)>3){
            $this->error('一次最多不超过3本图书');
        }

//        print_r($params);
        $result = false;
        Db::startTrans();
        try {
            //是否采用模型验证
            if ($this->modelValidate) {
                $name = str_replace("\\model\\", "\\validate\\", get_class($this->model));
                $validate = is_bool($this->modelValidate) ? ($this->modelSceneValidate ? $name . '.add' : $name) : $this->modelValidate;
                $this->model->validateFailException()->validate($validate);
            }
            if(count($books_ids)>1){
                $seva_data = [];
                foreach ($books_ids as $key => $value) {
                    $params['books_id'] = $value;
                    $params['bookstatus']= Db::name('books')->where('id','=',$value)->value('status');
//                print_r($params);
                    $seva_data[] = $params;


                }
//                print_r($seva_data);
                $result = $this->model->allowField(true)->saveAll($seva_data);
                if (!$result){
                    throw new \Exception('图书'.$params['books_id'].'状态更新失败');

                }
                Db::commit();


            }else{
                $params['bookstatus']= Db::name('books')->where('id','=',$params['books_id'])->value('status');
//                print_r($params);
                $result = $this->model->allowField(true)->save($params);
                if (!$result){
//                    $res = Books::where('id','=',$params['books_id'])->where('status',1)->update(['status'=>2]);
//                    if (!$res){
                    throw new \Exception('图书'.$params['books_id'].'状态更新失败');
//                    }
                }
                Db::commit();
            }


        } catch (ValidateException|PDOException|Exception $e) {
            Db::rollback();
            $this->error($e->getMessage());
        }
        if ($result === false) {
            $this->error(__('No rows were inserted'));
        }
        $this->success();

2.2如果数据量大的话，那么就选择用foreach循环一条一条的存，但是会有个问题就是model要放到循环里面去

php 复制代码

        $books_ids = explode(',', $params['books_id']);
        if(count($books_ids)>3){
            $this->error('一次最多不超过3本图书');
        }
        $diff = strtotime($params['expecttime']) - strtotime($params['borrowtime']);
        if($diff > 180*24*3600){
            $this->error('借书时间不能超过180天');
        }
        else if($diff < 24*3600){
            $this->error('借书时间不能少于1天');
        }


        $result = false;
        Db::startTrans();
        try {
            //是否采用模型验证
            if ($this->modelValidate) {
                $name = str_replace("\\model\\", "\\validate\\", get_class($this->model));
                $validate = is_bool($this->modelValidate) ? ($this->modelSceneValidate ? $name . '.add' : $name) : $this->modelValidate;
                $this->model->validateFailException()->validate($validate);
            }
            if(count($books_ids)>1){

                foreach ($books_ids as $key => $value) {
                    $dt = $params;
                    $dt['books_id'] = $value;

                    $model = new \app\admin\model\read\Borrow;
                    $result = $model->allowField(true)->save($dt);
                    if ($result){
                        $res = Books::where('id','=',$dt['books_id'])->where('status',1)->update(['status'=>2]);
                        if (!$res){
                            throw new \Exception('图书'.$dt['books_id'].'状态更新失败');
                        }
                    }

                }

            }else{
                $result = $this->model->allowField(true)->save($params);
                if ($result){
                    $res = Books::where('id','=',$params['books_id'])->where('status',1)->update(['status'=>2]);
                    if (!$res){
                        throw new \Exception('图书'.$params['books_id'].'状态更新失败');
                    }
                }
            }

            Db::commit();
        } catch (ValidateException|PDOException|Exception $e) {
            Db::rollback();
            $this->error($e->getMessage());
        }
        if ($result === false) {
            $this->error(__('No rows were inserted'));
        }
        $this->success();

3.数据库的关联查询

php 复制代码

        $oldData = $this->model->with('books')->where('books_id' ,'in',$books_ids)->where('subscription.status','=','1')->select();

//        $jsonData = json_encode($oldData, JSON_PRETTY_PRINT | JSON_UNESCAPED_UNICODE);  // 格式化 JSON 输出
//        print_r($jsonData);
        if ($oldData){
            $titles = array_map(function ($item){
                return $item['books']['name'];
            },$oldData);

            $this->error('已经在预约中不能重复预约:'.implode("，",$titles));
        }

4.用fastadmin自带的邮件系统发邮件

4.1进入到api里面可以自己,自定义一个api

4.2具体邮件类的封装是在下图的目录下，可以自己去找然后看里面的注释