On Sun, Oct 24, 2010 at 10:45 AM, Bob Hutchinson
<hutchlists@midwales.com> wrote:
On Saturday 23 October 2010, Earl Miles wrote:
> On 10/22/2010 1:56 PM, Bob Hutchinson wrote:
> > In D7 I get somewhat different behaviour:
> >
> > If I do not create an entry in the theme registry, all works as expected,
> > but if I do, things start to behave oddly.
> >
> > function mymodule_theme() {
> > ....
> >
> > 'mymodule_thingy_form' => array(
> >
> > 'variables' => array(
> >
> > 'form' => NULL,
> >
> > ),
> >
> > ),
>
> In D7 the above should actually be:
>
> 'mymodule_thingy_form' => array(
> 'render element' => 'form',
>
> > ....
> > }
> > and create a function
> > function theme_mymodule_thingy_form($variables) {
> >
> > $form = $variables['form'];
> > $output = drupal_render($form);
> > return $output;
> >
> > }
>
> You should use either render() or drupal_render_children() rather than
> drupal_render(). So far as I could figure out, drupal_render() should no
> longer be used inside theme functions. You use render() to render a
> specific element, and drupal_render_children() to render all the
> children but NOT the element (which is what you want when attempting to
> render $form since that is currently being rendered).
I ran some trials using form_example from http://drupal.org/project/examples
I found that indeed I should not use drupal_render() inside theme functions,
drupal_render_children() works fine.
I also found that using drupal_get_form() within a function (as opposed to in
a menu) requires the output of drupal_get_form() to be run through render(),
otherwise the form is not complete. The theme (defined with 'render element')
is picked up automatically, the same as it is when calling drupal_get_form()
directly in a menu $item.
Thanks for your help.
--
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Bob Hutchinson
Midwales dot com
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