*/ public function rules(): array { return [ 'time_slot_id' => ['required', 'ulid', 'exists:time_slots,id'], 'location_id' => ['nullable', 'ulid', 'exists:locations,id'], 'title' => ['nullable', 'string', 'max:255'], 'description' => ['nullable', 'string'], 'instructions' => ['nullable', 'string'], 'coordinator_notes' => ['nullable', 'string'], 'slots_total' => ['required', 'integer', 'min:1'], 'slots_open_for_claiming' => ['required', 'integer', 'min:0', 'lte:slots_total'], 'report_time' => ['nullable', 'date_format:H:i'], 'actual_start_time' => ['nullable', 'date_format:H:i'], 'actual_end_time' => ['nullable', 'date_format:H:i'], 'is_lead_role' => ['nullable', 'boolean'], 'allow_overlap' => ['nullable', 'boolean'], 'status' => ['nullable', 'in:draft,open,full,in_progress,completed,cancelled'], ]; } }