Drupal 6: $base_path doesn't always point to the frontpage

Heine — Sun, 17/05/2009 - 19:13

Dear themers,

<a href="<?php print $base_path ?>" title="<?php print t('Home'); ?>" ...

.... in page.tpl.php breaks Home functionality on many multilingual sites.

Consider a multilingual site with English (prefix 'en') as the default language and Dutch (prefix 'nl') as a second language. While browsing the site in Dutch (eg http://example.com/nl/node/5), the homelink created with $base_path leads to http://example.com/, which is the default English content. Quite an unpleasant surprise for your visitors.

The correct URL to the homepage is $front_page. As this variable holds a URL, you still need to convert it to HTML by calling check_url on it:

<a href ="<?php print check_url($front_page) ?>" ...

If you maintain a theme on Drupal.org that doesn't use $front_page, please consider this a bugreport. Thanks.

Theme resources...

Nicholas Thompson (not verified) — Mon, 18/05/2009 - 08:51

Good point - the URL to the frontpage should be $front_page (/me goes off to check Abessive!)...

But $base_path has its place; access to theme resources. Shouldn't you link to images using:

echo theme('image', base_path() . path_to_theme() . '/images/blah.png');

Also - should you use $base_path or base_path()?

$base_path, $directory

Heine — Mon, 18/05/2009 - 11:25

In page.tpl.php $base_path is available, so by all means, use $base_path there. In other .tpl.php files you need to call base_path() yourself, or make your own $base_path variable in template.php.

template_preprocess() always fills $directory —why not $base_path is beyond me—, so there's no need to call path_to_theme().

Now, theme_image accepts as path: "Either the path of the image file (relative to base_path()) or a full URL." The code above should read:

print theme('image', $directory .'/images/blah.png');

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Heine