Question

I have a Drupal site that needs to display a unique header image based on the path. I have found some helpful code. It gets me close to where I need to be, but not all the way. I have pasted it at the end of this post.

The issue I am having is that it bases the banner image off of the characters after the first “/” after example.com in the URL. For example, example.com/forum returns a banner of header-FORUM.png.

I need it to work a little differently. I would like it to base the banner returned off the characters after the second “/” after example.com in the URL. For example, example.com/category/term should return a banner of header-TERM.png.

Any help that you can offer with this is much appreciated.

Here’s the code I mentioned earlier via AdaptiveThemes (FYI, there is a comment on that page that attempts to solve a similar issue to mine but I can’t get it to work).

    <?php
// Return a file based on the URL alias, else return a default file
function unique_section_header() {
  $path = drupal_get_path_alias($_GET['q']);
  list($sections, ) = explode('/', $path, 2);
  $section = safe_string($sections);
  $filepath = path_to_theme() . '/images/sections/header-' . $section .'.png';
  if (file_exists($filepath)) {
    $output = $filepath;
  }
  else {
    $output = path_to_theme() . '/images/sections/header-default.png';
  }
  return $output;
}

//Make a string safe
function safe_string($string) {
  $string = strtolower(preg_replace('/[^a-zA-Z0-9_-]+/', '-', $string));
  return $string;
}
?>

Thanks!

Answer 1

Not exactly sure what the output of drupal_get_path_alias is, but try this:

<?php
// Return a file based on the URL alias, else return a default file
function unique_section_header() {
  $path = drupal_get_path_alias($_GET['q']);
  $pathSegments = explode('/', $path, 3);
  $section = safe_string($pathSegments[2]);
  $filepath = path_to_theme() . '/images/sections/header-' . $section .'.png';
  if (file_exists($filepath)) {
    $output = $filepath;
  }
  else {
    $output = path_to_theme() . '/images/sections/header-default.png';
  }
  return $filepath;//$output;
}

//Make a string safe
function safe_string($string) {
  $string = strtolower(preg_replace('/[^a-zA-Z0-9_-]+/', '-', $string));
  return $string;
}

The only changes made were to the usage of explode. explode will separate the path based on the /, so you just need to access a different element in that array. The last parameter of explode is the maximum number of elements to be returned and may also need to be tweaked