background image
HomeRecent PostsDrupalSearchTagsRSSContactAboutAccount

Adding and removing links from the breadcrumbs
Eric.London's picture
Submitted by Eric.London on 2/26/2009
Tags:
  • 2 comments
  • Share this

This code snippet will show you how to search through the breadcrumbs and remove a particular item. Since I added this code to my theme in a preprocess_page function, I had to recreate $variables['breadcrumb']. NOTE: If I had chose to add this code to a module instead, I could have simply used the drupal_get_breadcrumb() and drupal_set_breadcrumb functions.

<?php
function MYTHEME_preprocess_page(&$variables) {
  // in this example, I'm checking to see if icon_users.png exists in the breadcrumbs
  if (stripos($variables['breadcrumb'],'icon_users.png')) {
    // get the current breadcrumbs
    $bc = drupal_get_breadcrumb();

    // loop through the breadcrumbs
    foreach ($bc as $k => $v) {
      // check for a condition and remove as necessary
      if (stripos($v,'icon_users.png')) unset($bc[$k]);
    }

    // recreate the breadcrumbs using the theme_breadcrumb function
    $variables['breadcrumb'] = theme('breadcrumb', $bc);
  }
}
?>

Creating custom breadcrumbs for a certain node type
Eric.London's picture
Submitted by Eric.London on 1/15/2009
Tags:

Here's a quick code snippet that shows you how you can create custom breadcrumbs for a certain node type. This code would reside in your template.php theme file.

<?php
function MYTHEME_preprocess_page(&$variables) {
  if ($variables['node']->type == 'MYNODETYPE') {
       
    $links = array();

    // creating a link to the home page
    $links[] = l('Home', '<front>');

    // here's how you could add a link to a taxonomy page
    $vid = 2;
    foreach ($variables['node']->taxonomy as $k => $v) {
      if ($v->vid = $vid) {  
        $links[] = l($v->name, 'taxonomy/term/' . $v->tid);
        break;
      }
    }
       
    // yet another link
    $links[] = l('Some Other Link', 'SOMEOTHERLINK');

    // lastly, overwrite the contents of the breadcrumbs variable in the page scope
    $variables['breadcrumb'] = theme('breadcrumb', $links);
  }
}
?>

NOTE: if you were adding this code to a module, you could use the drupal_set_breadcrumb() function to do the same functionality.

Manually replace a link in breadcrumbs
Eric.London's picture
Submitted by Eric.London on 10/7/2008
Tags:

At some point, you may need to change a link in the breadcrumbs. I put this function in my theme's template.php file to overrides the theming of the breadcrumbs and manually replace one of the links.

<?php
function MYTHEME_breadcrumb($breadcrumb) {
  if (!empty($breadcrumb)) {
    // loop through breadcrumbs
    foreach ($breadcrumb as $k => $v) {
      // convert a tag into xml
      $o = simplexml_load_string($v);

      // replace link
      if ($o['href']=='/OLDLINK') {
        // create new link
        $breadcrumb[$k] = l($o, 'NEWLINK');
      }
    }

    return '<div class="breadcrumb">'. implode(' » ', $breadcrumb) .'</div>';
  }
}
?>

Add the current page to breadcrumbs
Eric.London's picture
Submitted by Eric.London on 10/7/2008
Tags:

Here's a quick snippet to add the current page to the breadcrumbs. I added this code to my template.php file.

<?php
function MYTHEME_breadcrumb($breadcrumb) {
  if (!empty($breadcrumb)) {
    // add current page
    $breadcrumb[] = l(drupal_get_title(), $_REQUEST['q']);
    return '<div class="breadcrumb">'. implode(' » ', $breadcrumb) .'</div>';
  }
}
?>

Syndicate content