hasMany('LotteryPrize', 'activity_id', 'id'); } public function condition() { return $this->hasMany('Condition', 'activity_id', 'id'); } public function drawRecord() { return $this->hasMany('DrawRecord', 'activity_id', 'id'); } public function winRecord() { return $this->hasMany('WinRecord', 'activity_id', 'id'); } public function userChance() { return $this->hasMany('UserChance', 'activity_id', 'id'); } public function statistics() { return $this->hasMany('Statistics', 'activity_id', 'id'); } }