request->host(); return $domain. "?type=invite&code=" . $this->exchange_code; } public function vipInfo(){ return $this->hasOne(SystemGroupData::class, 'group_data_id', 'group_data_id'); } public function activateUser(){ return $this->hasOne(User::class, 'uid', 'activate_uid'); } public function useUser(){ return $this->hasOne(User::class, 'uid', 'use_user_id'); } }