Update README.md

README.md

@@ -23,6 +23,7 @@ Do not use this master repository for production
     1. [Radio Button](#radio-button)
     1. [WYSIWYG](#wysiwyg)
 1. [Additional Basic Options](#additional-basic-options)
+1. [Transform index cell value or detail cell value](#transform-index-cell-value-or-detail-cell-value)
 1. [Show Column To Specific Page](#show-column--input-to-specific-page)
 1. [Buttons Display Control](#buttons-display-control)
 1. [Additional View](#additional-view)
@@ -471,6 +472,12 @@ Additional options :
 | <code>->placeholder("Enter the text");</code> | To set the input placeholder |
 | <code>->validation("string");</code> | To set the input validation (laravel validation) |
 
+# Transform index cell value or detail cell value
+| Name | Description |
+| --- | --- |
+| <code>->indexDisplayTransform(function($value, $row) { return $value; });</code> | To transform the index value. $value is current value of cell, $row is collection of current record |
+| <code>->detailDisplayTransform(function($value, $row) { return $value; });</code> | To transform the detail value. $value is current value of cell, $row is collection of current record |
+
 **Example**
 ```php
     $this->addText("Foo Bar")
@@ -627,4 +634,4 @@ To use this feature you have to set the Google FCM Key at <code>config/crudboost
 
     // Or you can send to ios with this bellow 
     $fcm->sendToIos($reg_id_array, $title, $message,$data);
-```
+```