fix some bugs

app/Http/Controllers/Admin/CustomerController.php

@@ -175,8 +175,11 @@ class CustomerController extends SuperController
 
         $customer = Customer::findOrFail($id);
 
-        if (array_key_exists('referral_to_id', $data) && filled($customer->referral_to_id)) {
+        if (array_key_exists('referral_to_id', $data)) {
-            unset($data['referral_to_id']);
+            $incoming = is_string($data['referral_to_id']) ? trim($data['referral_to_id']) : $data['referral_to_id'];
+            if (filled($customer->referral_to_id) || $incoming === null || $incoming === '') {
+                unset($data['referral_to_id']);
+            }
         }
 
         if (isset($data['fname'], $data['lname'])) {

app/Models/Customer.php

@@ -6,6 +6,7 @@ use Illuminate\Database\Eloquent\Factories\HasFactory;
 use Illuminate\Database\Eloquent\Model;
 use Illuminate\Database\Eloquent\SoftDeletes;
 use Illuminate\Support\Facades\Hash;
+use Carbon\Carbon;
 use Rooyesh\Wallet\models\Wallet;
 use Illuminate\Foundation\Auth\User as Authenticatable;
 use Symfony\Component\HttpKernel\Exception\UnprocessableEntityHttpException;
@@ -136,6 +137,17 @@ class Customer extends Authenticatable implements JWTSubject
         $this->attributes['password'] = Hash::make($value);
     }
 
+    public function setBirthDateAttribute($value): void
+    {
+        if ($value === null || $value === '') {
+            $this->attributes['birth_date'] = null;
+
+            return;
+        }
+
+        $this->attributes['birth_date'] = Carbon::parse($value)->format('Y-m-d');
+    }
+
     public function getJWTIdentifier()
     {
         return $this->getKey();

database/migrations/2026_09_02_000001_change_customers_birth_date_to_date.php

@@ -0,0 +1,41 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Support\Facades\DB;
+use Illuminate\Support\Facades\Schema;
+
+/**
+ * تولد قبل از ۱۹۷۰ روی TIMESTAMP مای‌اسکیوال ذخیره نمی‌شود (مثلاً ۱۹۶۷-۱۰-۲۳ → ۱۲۹۲).
+ */
+return new class extends Migration
+{
+    public function up(): void
+    {
+        if (! Schema::hasTable('customers') || ! Schema::hasColumn('customers', 'birth_date')) {
+            return;
+        }
+
+        $row = DB::selectOne(
+            'SELECT DATA_TYPE AS data_type FROM information_schema.COLUMNS
+             WHERE TABLE_SCHEMA = ? AND TABLE_NAME = ? AND COLUMN_NAME = ?',
+            [DB::connection()->getDatabaseName(), $this->customersTable(), 'birth_date']
+        );
+
+        $type = strtolower((string) ($row->data_type ?? ''));
+        if ($type === 'date') {
+            return;
+        }
+
+        DB::statement('ALTER TABLE `'.$this->customersTable().'` MODIFY `birth_date` DATE NULL DEFAULT NULL');
+    }
+
+    public function down(): void
+    {
+        // به TIMESTAMP برنمی‌گردانیم — تاریخ‌های قبل از ۱۹۷۰ قطع می‌شوند
+    }
+
+    private function customersTable(): string
+    {
+        return DB::getTablePrefix().'customers';
+    }
+};