Q:

How to modify field_suffix after form submit?

I have a form with a custom suffix (#field_suffix) for a field. I need to change the suffix value after the form has been submitted. Which hook should I use to achieve this ?
Sample Code :
$form['field_test']['#field_suffix']='Suffix-1';

Edit:
I want to show "Suffix-1" when editing form and "Suffix-2" during display of content.

A:

I found a solution to achieve this functionality. 
function hook_node_view($node, $view_mode, $langcode) {
$node->content['field_test'][0]['#markup'] = $node->content['field_test']['#items'][0]['value'].'Suffix-2';
} 

