diff --git a/app/Helpers/Helper.php b/app/Helpers/Helper.php
index dad5e72..6a45cb1 100644
--- a/app/Helpers/Helper.php
+++ b/app/Helpers/Helper.php
@@ -491,3 +491,26 @@ function formatFileSize($size) {
         return number_format($size / 1073741824, 1) . ' GB';
     }
 }
+
+
+/**
+ * generating hash UID by length
+ * @param $length
+ * @return string
+ */
+function generateUniqueID($length = 8) {
+    $chars = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890';
+    $uniqueID = '';
+
+    for ($i = 0; $i < $length; $i++) {
+        $randomChar = $chars[rand(0, strlen($chars) - 1)];
+        $uniqueID .= $randomChar;
+    }
+
+    return $uniqueID;
+}
+
+function getSetting(){
+    return 'test@xshop.ir';
+}
+
diff --git a/app/Models/Contact.php b/app/Models/Contact.php
index c843206..469cc04 100644
--- a/app/Models/Contact.php
+++ b/app/Models/Contact.php
@@ -8,4 +8,18 @@ use Illuminate\Database\Eloquent\Model;
 class Contact extends Model
 {
     use HasFactory;
+
+    public function getRouteKeyName()
+    {
+        return 'hash';
+    }
+
+    protected static function boot()
+    {
+        parent::boot();
+
+        static::creating(function($model) {
+            $model->hash = generateUniqueID((strlen(Contact::count()) + 2));
+        });
+    }
 }
diff --git a/app/Models/Invoice.php b/app/Models/Invoice.php
index 9e12e02..21ee769 100644
--- a/app/Models/Invoice.php
+++ b/app/Models/Invoice.php
@@ -8,4 +8,19 @@ use Illuminate\Database\Eloquent\Model;
 class Invoice extends Model
 {
     use HasFactory;
+
+
+    public function getRouteKey()
+    {
+        return 'hash';
+    }
+
+    protected static function boot()
+    {
+        parent::boot();
+
+        static::creating(function($model) {
+            $model->hash = generateUniqueID( (strlen(Invoice::count()) + 2));
+        });
+    }
 }