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I have drupal form with three select box i want to change select box 2nd and 3rd after change value of 1st select box.

ex: i have Three select box

1) Cruise line

2) Destination

3) Ship Id

When user select any value of Cruise line then i want to update value of 2) Destination and 3) Ship id

2nd and 3rd select box value are dependent on 1st select box

your answer really appreciated

Thanks in advance

2 Answers 2

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Try one of the following module

Simple hierarchical select

Simple hierarchical select defines a new form widget for taxonomy fields to select a term by "browsing" through the vocabularies hierarchy.

Hierarchical Select

This module defines the "hierarchical_select" form element, which is a greatly enhanced way for letting the user select items in a hierarchy.

Or you can also achieve that by writing a custom module :)

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  • but its only update one select box. i want to update two select box when value change of first Sep 29, 2014 at 9:28
  • @AjayGadhavana Try out the Conditional Fields module. Sep 29, 2014 at 9:36
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Finally I have found answer for updating multiple field after changing values of select box

function callback_function($form, &$form_state)
{
  $commands = array();
  $commands[] = ajax_command_replace('#element1', drupal_render($form[any form element]));
  $commands[] = ajax_command_replace("#element2", drupal_render($form[any form element]));
  return array('#type' => 'ajax', '#commands' => $commands);
}

In your ajax callback add ajax_command_replace(). This function have two arguments, first argument is element id (ex: div,span etc that's you want to replace) second argument is HTML or data that's that you want to place at place of element.

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