msy-prod/app/Managers/PairActivityManager.php

<?php

namespace App\Managers;

use App\Models\Fpdx\ActivityModel;

/**
 * 分配对象匹配活动
 * Class PairActivityManager
 * @package App\Managers
 */
class PairActivityManager
{
    protected ActivityModel $activityModel;

    public function __construct(ActivityModel $activityModel)
    {
        $this->$activityModel = $activityModel;
    }

    /**
     * 获取报名中的活动
     * @return \Illuminate\Database\Eloquent\Builder|\Illuminate\Database\Eloquent\Model|object|null
     */
    public function getEnrollingActivity()
    {
        $activity = $this->activityModel->where('signbegin_time', '<', time())->where('signend_time', '>', time())->first();
        return $activity;
    }
}