remove the validation for cycle number in store label and add an eloquent event for updating cycle number when cycle is saved.

app/Events/CycleSaved.php

@@ -0,0 +1,40 @@
+<?php
+
+namespace App\Events;
+
+use App\Models\Cycle;
+use Illuminate\Broadcasting\Channel;
+use Illuminate\Broadcasting\InteractsWithSockets;
+use Illuminate\Broadcasting\PresenceChannel;
+use Illuminate\Broadcasting\PrivateChannel;
+use Illuminate\Contracts\Broadcasting\ShouldBroadcast;
+use Illuminate\Foundation\Events\Dispatchable;
+use Illuminate\Queue\SerializesModels;
+
+class CycleSaved
+{
+    use Dispatchable, InteractsWithSockets, SerializesModels;
+
+    /**
+     * Create a new event instance.
+     */
+
+    public Cycle $cycle;
+
+    public function __construct(Cycle $cycle)
+    {
+        $this->cycle = $cycle;
+    }
+
+    /**
+     * Get the channels the event should broadcast on.
+     *
+     * @return array<int, \Illuminate\Broadcasting\Channel>
+     */
+    public function broadcastOn(): array
+    {
+        return [
+            // new PrivateChannel('channel-name'),
+        ];
+    }
+}

app/Http/Requests/StoreLabelRequest.php

@@ -26,7 +26,7 @@ class StoreLabelRequest extends FormRequest
                     'sterile_date' => 'required|date',
                     'expire_date' => 'required|date',
                     'sterilizer_id' => 'required',
-                    'cycle_number' => 'required|exists:cycles,cycle_number',
+                    'cycle_number' => 'required',
                     'lot_number' => 'required',
                     'package_id' => 'required|exists:packages,id',
                 ];
@@ -39,7 +39,7 @@ class StoreLabelRequest extends FormRequest
                     'sterile_date' => 'required',
                     'expire_date' => 'required',
                     'sterilizer_id' => 'required',
-                    'cycle_number' => 'required|exists:cycles,cycle_number',
+                    'cycle_number' => 'required',
                     'lot_number' => 'required',
                     'package_id' => 'required|exists:packages,id',
                 ];

app/Listeners/UpdateLabelsCycleNumber.php

@@ -0,0 +1,29 @@
+<?php
+
+namespace App\Listeners;
+
+use App\Events\CycleSaved;
+use Illuminate\Contracts\Queue\ShouldQueue;
+use Illuminate\Queue\InteractsWithQueue;
+
+class UpdateLabelsCycleNumber
+{
+    /**
+     * Create the event listener.
+     */
+    public function __construct()
+    {
+        //
+    }
+
+    /**
+     * Handle the event.
+     */
+    public function handle(CycleSaved $event): void
+    {
+        $cycle = $event->cycle;
+        $cycleNumber = $cycle->cycle_number;
+
+        $cycle->labels()->update(['cycle_number' => $cycleNumber]);
+    }
+}

app/Models/Cycle.php

@@ -2,6 +2,7 @@
 
 namespace App\Models;
 
+use App\Events\CycleSaved;
 use Illuminate\Database\Eloquent\Factories\HasFactory;
 use Illuminate\Database\Eloquent\Model;
 use Illuminate\Database\Eloquent\Relations\BelongsTo;
@@ -14,6 +15,17 @@ class Cycle extends Model
         'date', 'user_id', 'cycle_number', 'sterilizer_id', 'note', 'verified', 'unique_id'
     ];
 
+    protected static function booted()
+    {
+        static::created(function ($cycle) {
+            event(new CycleSaved($cycle));
+        });
+
+        static::updated(function ($cycle) {
+            event(new CycleSaved($cycle));
+        });
+    }
+
     public function user(): BelongsTo
     {
         return $this->belongsTo(User::class);

app/Providers/EventServiceProvider.php

@@ -18,6 +18,9 @@ class EventServiceProvider extends ServiceProvider
         Registered::class => [
             SendEmailVerificationNotification::class,
         ],
+        \App\Events\CycleSaved::class => [
+            \App\Listeners\UpdateLabelsCycleNumber::class,
+        ],
     ];
 
     /**