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