I am trying to dive into Views Plugin writing, and I suspect I've hit the deep end. Not sure where to post this, so I wandered in here.
I'm working on a module I've been calling OG Vocabulary Purpose. The idea is that in every group, an OG Vocabulary can be assigned a particular role. E.g., such and such vocabulary is for project release tagging.
Now I'm trying to work out a filter that allows me to specify the Purpose of a vocabulary, and solely as an exposed filter look up the local group's assigned vocabulary, populate a taxonomy selection widget, and proceed normally as a taxonomy filter.
But I seem to have done at least one thing wrong, because I get some fine errors on my effort to rename tid to tid_purpose as an alternate index.
EDIT: The form widgets generate fine, the query does not.
function og_vocab_purpose_views_data_alter(&$data) {
// This handler is dependent on Spaces OG.
if (!module_exists('spaces_og')) {
return array();
}
$data['term_node']['tid_purpose'] = array(
'group' => t('Taxonomy'),
'title' => t('Term ID by Purpose'),
'help' => t('The taxonomy term id, restricted by vocabulary purpose.'),
'filter' => array(
'handler' => 'og_vocab_purpose_handler_filter_term_node_tid',
'hierarchy table' => 'term_hierarchy',
'numeric' => TRUE,
'skip base' => 'term_data',
'allow empty' => TRUE,
),
);
}How do I wrap another plugin inside my plugin in this way?

Comments
Solution:
Solution: Use
<?php$data['term_node']['tid_purpose'] = array(
'real_field' => 'tid',
?>