I'm using answers from Expose a view's filters both in a block, and in the actual view to duplicate an exposed filter as a block and make it appear in another region on every page.

I want to style both form copies a bit differently. When I started to look into the markup, I noticed that I'm getting two forms with identical IDs. Putting aside the styling, that's not good.
The code I am using is the following.

function MYMODULE_block_view($delta = ''){
  $block = array();
    case 'mysearch':
      $block['subject'] = t('My Search');
      $block['content'] = _MYMODULE_get_exposed_filter_form(); 
  return $block;

/** Function to get the Exposed filter form **/
function _MYMODULE_get_exposed_filter_form(){
  $view = views_get_view('node_index_view');
  $exposed_form = $view->display_handler->get_plugin('exposed_form');
  return $exposed_form->render_exposed_form();

How do I alter the ID of the copied exposed filter block? If I use hook_form_alter() or hook_form_views_exposed_form_alter() it's going to apply the alteration to both instances.

  • doesnt the block itself have some class / id that could help you distinguish the form for themeing ?
    – mojzis
    Jun 15, 2012 at 18:38
  • Theming is not a problem. A document should not have two identical IDs. IDs should be unique. Jun 15, 2012 at 18:55

1 Answer 1


This issue was discussed and answered in this thread, it includes a patch to fix the issue:


Another option is to use the module MEFIBS - More exposed forms in blocks

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