term_parent.inc
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<?php
/**
* @file
* Plugin to provide access control based upon a parent term.
*/
/**
* Plugins are described by creating a $plugin array which will be used
* by the system that includes this file.
*/
$plugin = array(
'title' => t("Taxonomy: parent term"),
'description' => t('Control access by existence of a parent term.'),
'callback' => 'ctools_term_parent_ctools_access_check',
'default' => array('vid' => array(), 'negate' => 0),
'settings form' => 'ctools_term_parent_ctools_access_settings',
'settings form validation' => 'ctools_term_parent_ctools_access_settings_validate',
'settings form submit' => 'ctools_term_parent_ctools_access_settings_submit',
'summary' => 'ctools_term_parent_ctools_access_summary',
'required context' => new ctools_context_required(t('Term'), array('taxonomy_term', 'terms')),
);
/**
* Settings form for the 'by parent term' access plugin
*/
function ctools_term_parent_ctools_access_settings($form, &$form_state, $conf) {
// If no configuration was saved before, set some defaults.
if (empty($conf)) {
$conf = array(
'vid' => 0,
);
}
if (!isset($conf['vid'])) {
$conf['vid'] = 0;
}
$form['settings']['vid'] = array(
'#title' => t('Vocabulary'),
'#type' => 'select',
'#options' => array(),
'#description' => t('Select the vocabulary for this form. If there exists a parent term in that vocabulary, this access check will succeed.'),
'#id' => 'ctools-select-vid',
'#default_value' => $conf['vid'],
'#required' => TRUE,
);
$options = array();
// Loop over each of the configured vocabularies.
foreach (taxonomy_get_vocabularies() as $vid => $vocabulary) {
$options[$vid] = $vocabulary->name;
}
$form['settings']['vid']['#options'] = $options;
return $form;
}
/**
* Check for access.
*/
function ctools_term_parent_ctools_access_check($conf, $context) {
// As far as I know there should always be a context at this point, but this
// is safe.
if (empty($context) || empty($context->data) || empty($context->data->vid) || empty($context->data->tid)) {
return FALSE;
}
// Get the $vid.
if (!isset($conf['vid'])) {
return FALSE;
}
$vid = $conf['vid'];
$count = db_query('SELECT COUNT(*) FROM {taxonomy_term_hierarchy} th INNER JOIN {taxonomy_term_data} td ON th.parent = td.tid WHERE th.tid = :tid AND td.vid = :vid', array(':tid' => $context->data->tid, ':vid' => $vid))->fetchField();
return $count ? TRUE : FALSE;
}
/**
* Provide a summary description based upon the checked terms.
*/
function ctools_term_parent_ctools_access_summary($conf, $context) {
$vocab = taxonomy_vocabulary_load($conf['vid']);
return t('"@term" has parent in vocabulary "@vocab"', array('@term' => $context->identifier, '@vocab' => $vocab->name));
}