term_parent.inc
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<?php
/**
* @file relationships/term_parent.inc
* Plugin to provide an relationship handler for term parent.
*/
/**
* Plugins are described by creating a $plugin array which will be used
* by the system that includes this file.
*/
$plugin = array(
'title' => t('Term parent'),
'keyword' => 'parent_term',
'description' => t('Adds a taxonomy term parent from a term context.'),
'required context' => new ctools_context_required(t('Term'), 'entity:taxonomy_term'),
'context' => 'ctools_term_parent_context',
'edit form' => 'ctools_term_parent_settings_form',
'defaults' => array('type' => 'top'),
);
/**
* Return a new context based on an existing context.
*/
function ctools_term_parent_context($context, $conf) {
// If unset it wants a generic, unfilled context, which is just NULL.
if (empty($context->data)) {
return ctools_context_create_empty('entity:taxonomy_term');
}
if (isset($context->data)) {
$result = db_query('SELECT t1.* FROM {taxonomy_term_hierarchy} t1 INNER JOIN {taxonomy_term_hierarchy} t2 ON t1.tid = t2.parent WHERE t2.tid = :tid', array(':tid' => $context->data->tid))->fetchAssoc();
// If top level term, keep looking up until we see a top level.
if ($conf['type'] == 'top') {
// If looking for top level, and there are no parents at all, make sure
// the current term is the 'top level'.
if (empty($result)) {
$result['tid'] = $context->data->tid;
}
while (!empty($result['parent'])) {
$result = db_query('SELECT * FROM {taxonomy_term_hierarchy} WHERE tid = :tid', array(':tid' => $result['parent']))->fetchAssoc();
}
}
// Load the term.
if ($result) {
$term = taxonomy_term_load($result['tid']);
return ctools_context_create('entity:taxonomy_term', $term);
}
}
}
/**
* Settings form for the relationship.
*/
function ctools_term_parent_settings_form($form, &$form_state) {
$conf = $form_state['conf'];
$form['type'] = array(
'#type' => 'select',
'#title' => t('Relationship type'),
'#options' => array('parent' => t('Immediate parent'), 'top' => t('Top level term')),
'#default_value' => $conf['type'],
);
return $form;
}