'datetime', 'ticket_count' => 'integer', ]; public function venue(): BelongsTo { return $this->belongsTo(Venue::class); } public function activity(): BelongsTo { return $this->belongsTo(Activity::class); } public function activityDay(): BelongsTo { return $this->belongsTo(ActivityDay::class); } public function wechatUser(): BelongsTo { return $this->belongsTo(WechatUser::class); } public function verifier(): BelongsTo { return $this->belongsTo(User::class, 'verified_by'); } }