Send welcome email with voucher to user upon successful verification of customer email adddress

app/Models/User.php

@@ -2,6 +2,7 @@
 
 namespace App\Models;
 
+use App\Classes\General\Interfaces\KeyValueInterface;
 use App\Classes\General\Interfaces\Voucherifiable;
 use Illuminate\Database\Eloquent\Relations\BelongsToMany;
 use Illuminate\Database\Eloquent\Relations\HasMany;
@@ -26,7 +27,8 @@ class User extends AbstractModel implements
     AuthenticatableContract,
     AuthorizableContract,
     CanResetPasswordContract,
-    Voucherifiable
+    Voucherifiable,
+    KeyValueInterface
 {
     use HasRoles, Notifiable, Authenticatable, Authorizable, CanResetPassword, MustVerifyEmail, SoftDeletes;
 
@@ -101,4 +103,21 @@ class User extends AbstractModel implements
     {
         return $this->HasMany(UserReward::class, 'user_id', 'id');
     }
+
+    public function hasAttribute(string $key, $value = null): bool
+    {
+        $query = $this->attributes()->where('key', $key);
+
+        if ($value !== null) {
+            $query->where('value', $value);
+        }
+
+        return $query->exists();
+    }
+
+
+    public function attributes(): MorphMany
+    {
+        return $this->morphMany(KeyValuePair::class, 'owner');
+    }
 }