complete Complete User Request Submission section RAD-1

app/Models/OtpCode.php

@@ -0,0 +1,23 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Model;
+
+class OtpCode extends Model
+{
+    protected $fillable = [
+        'phone',
+        'code',
+        'expires_at'
+    ];
+
+    protected $casts = [
+        'expires_at' => 'datetime'
+    ];
+
+    public function isExpired()
+    {
+        return now()->isAfter($this->expires_at);
+    }
+}