I think you're on the right track. Check out:
http://drupal.org/node/197578
which shows you how to render a checkboxes control into a table.
You shouldn't technically need the form-item theme function to do
what you're doing, but rather just a custom checkboxes theming
form. I've done that successfully in D5, but it looks like it would
work in D6. Note the direct calls to theme_checkbox in that function
so that it renders each of the checkboxes properly
Hope that helps,
Dave
On Jan 13, 2010, at 4:54 PM, Steve Edwards wrote:
I have a need to create a two-level unordered list of checkboxes
from a two level taxonomy vocabulary. So for instance, if my
vocabulary is
- Level 1 term 1
-- Level 2 term 1
-- Level 2 term 2
-- Level 2 term 3
- Level 1 term 2
-- Level 2 term 4
-- Level 2 term 5
- Level 1 term 3
I want to create the following:
<ul>
<li><input type = checkbox">Level 1 term 1</li>
<ul>
<li><input type = checkbox">.Level 2 term 1</li>
<li><input type = checkbox">Level 2 term 2</li>
<li><input type = checkbox">Level 2 term 3</li>
</ul>
<li><input type = checkbox">Level 1 term 2</li>
<ul>
<li><input type = checkbox">Level 2 term 4</li>
<li><input type = checkbox">Level 2 term 5</li>
<ul>
<li><input type = checkbox">Level 1 term 3<li>
</ul>
What is the best way to do this? Just use a checkboxes element
type and create my own theme function for the form? Modify
something like theme_item_list? Or is there a better (and easier)
way that I'm missing?
What I tried doing was to create a theme function for my checkboxes
element by setting the #theme property for the element to my custom
theme function (and registering the function in hook_theme). I
then just made a copy of theme_checkboxes() (and theme_form_element
since it's called from theme_form_checkboxes) and renamed to match
hook_theme and the #theme property. However, when doing that, none
of my checkboxes are rendered at all. On stepping through the
code, I found the problem in drupal_render starting at line 2868:
if (!isset($elements['#children'])) {
$children = element_children($elements);
// Render all the children that use a theme function.
if (isset($elements['#theme']) && empty($elements
['#theme_used'])) {
$elements['#theme_used'] = TRUE;
$previous = array();
foreach (array('#value', '#type', '#prefix', '#suffix') as
$key) {
$previous[$key] = isset($elements[$key]) ? $elements
[$key] : NULL;
}
// If we rendered a single element, then we will skip the
renderer.
if (empty($children)) {
$elements['#printed'] = TRUE;
}
else {
$elements['#value'] = '';
}
$elements['#type'] = 'markup';
unset($elements['#prefix'], $elements['#suffix']);
$content = theme($elements['#theme'], $elements);
foreach (array('#value', '#type', '#prefix', '#suffix') as
$key) {
$elements[$key] = isset($previous[$key]) ? $previous
[$key] : NULL;
}
}
// Render each of the children using drupal_render and
concatenate them.
if (!isset($content) || $content === '') {
foreach ($children as $key) {
$content .= drupal_render($elements[$key]);
}
}
}
So basically, because I have #theme set for the checkboxes field,
it skips the rendering of the individual checkbox elements. To me,
it makes sense that I override the theme function for the
checkboxes type since that's the element type, but that doesn't
seem to be the case. So what do I need to do to be able to simply
theme my checkboxes element?
Thanks.
Steve
