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Question

Load external script in <head> in Drupal 6

Answer 1

+2 A:

There are multiple solutions to work around the problem.

use hook_footer() to add the js to the footer
make a small jquery script, which creates the <script> element and adds it to <head>
do it with a template preprocess function
make your own page.tpl.php

Yorirou 2010-09-08 14:13:06

NB: I want to insert script in `<head>`.

Török Gábor 2010-09-08 15:22:29

I implemented the `template_preprocess_page()` hook and it works nice.

Török Gábor 2010-09-13 11:51:35

Answer 2

A:

Did you see this comment?

http://api.drupal.org/api/function/drupal_set_html_head/6#comment-2083

Kevin 2010-09-08 14:38:58

@Kevin: it tells me how to use it correctly. *I use it correctly.* It's normal behavior to prepend data in `<head>`. I want to **append it**.

Török Gábor 2010-09-08 15:21:07

@Török Gábor you are in bad luck then. sorry. Drupal uses the .= operator, prepending it. appending is simply not possible in a _correct_ way.

berkes 2010-09-08 19:08:17

Oh, sorry, did not see that part.

Kevin 2010-09-08 19:31:45

@Kevin, @berkes: i was wrong. It uses the `.=` operator so it *appends*. I call `drupal_set_html_head()` inside `hook_init()`, may be that's the reason.

Török Gábor 2010-09-10 14:08:54

Answer 3

+1 A:

Drupal uses the .= operator to create the $head variable. The $js and $css is kept in an array, and allows you to be re-orderd. $head is a string, and cannot be re-orderd, othern then by ugly, error-prone hacks. Such as regular-expression explosions, re-ordering and imploding.

$heads = preg_explode("\n", $head);
ksort($heads);
$head = implode("\n", $heads);

in your theme's variable pre-processor.

berkes 2010-09-10 07:31:02

Answer 4

+1 A:

The default page.tpl.php (you can find it in /modules/system/page.tpl.php is this:

<head>
  <title><?php print $head_title; ?></title>
  <?php print $head; ?>
  <?php print $styles; ?>
  <?php print $scripts; ?>
  <script type="text/javascript"><?php /* Needed to avoid Flash of Unstyled Content in IE */ ?> </script>
</head>

When you make drupal_set_html_head() it is appending stuff to variable $head, but still there are more variables appended as you see.

One possible solutions is to append the stuff that you want to $scripts, instead of $head.

How?

with a preprocess function from your module:

function MYMODULE_preprocess_page(&$variables) {
    $variables['scripts'] .= $your_stuff;
}

I didn't try this solution, but if doesn't work maybe is because the order of execution. Try to set your module's weight higher, so it will run after the system_preprocess_page.

Other reason why may not work is because the theme is printing the variables in different order in page.tpl.php. But you can't control this from the code of a module.

corbacho 2010-09-13 11:00:51

This is the option I chose. Thanks for the detailed explanation.

Török Gábor 2010-09-13 11:52:50

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Load external script in <head> in Drupal 6

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