'float', 'started_at' => 'datetime', 'resolved_at' => 'datetime', ]; public function rule(): BelongsTo { return $this->belongsTo(AlertRule::class, 'alert_rule_id'); } public function server(): BelongsTo { return $this->belongsTo(Server::class); } public function isFiring(): bool { return $this->state === 'firing'; } }