'integer', 'read_at' => 'integer', 'confirmed' => 'integer', ]; public function user(): \think\model\relation\BelongsTo { return $this->belongsTo(User::class, 'user_id', 'id'); } public function operationNotice(): \think\model\relation\BelongsTo { return $this->belongsTo(OperationNotice::class, 'notice_id', 'id'); } }