[html-formfu] get_element returns undef

[Carl Franks]

2008/9/17 goetz <devel at helektra.de>:
> Hallo,
>
> I trie to use  get_element with no success.
>
> The debug output is always undef.
>
> When I use get_field or get_all_element I get the correct
> output.
>
>
> Any hint?
>
>
> Her are the details:
>
> in the config file:
>
>  - type: Select
>    name: name
>    label: name
>
>
> in my controler:
>
> my $test = $form->get_element({ type => 'Select'});  # undef !!!!!!!
> my $test01= $form->get_elements({type => 'Select'});
> my $field = $form->get_field(name => 'name');
> my $select= $form->get_all_element({type => 'Select'});

As that's only a snippet of the form config - I'm going to take a
guess that you're either using auto_fieldset() - or the Select menu is
nested by some other means, such as an explicit block.

In which case, this behaviour is correct.

$form->get_element() only returns direct children of the form object.
If the Select element is nested within a fieldset or block, it'll
never be returned.

$form->get_elements() also won't return nested children, but it won't
be undef, it'll just return an empty arrayref.

$form->get_all_elements() does a recursive search, so it'll return the
Select element.

$form->get_field() also does a recursive search, so that'll work.

If you're after a field, then get_field() / get_fields() are probably best.

Cheers,
Carl