appadmin-demosss/app/Models/EveryActData.php

<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Model;

class EveryActData extends Model
{
    protected $table='every_act_data';

    protected $fillable=['user_id','activity_id','account'];

    public function activity()
    {
        return $this->hasOne(Activity::class,'id','activity_id');
    }
}