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<?php
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// $Id: taxonomy_browser.module,v 1.19.2.29 2008/06/26 16:30:54 nancyw Exp $
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// Original by Moshe Weitzman (weitzmna@tejasa.com)
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/**
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* @file
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* Enables users to construct their own view of content from terms across
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* multiple vocabularies.
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*/
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//*******************************************************************
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//* Drupal Hooks : General Overview
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//*******************************************************************
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/**
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* Implementation of hook_menu().
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*/
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function taxonomy_browser_menu($may_cache) {
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$items = array();
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if ($may_cache) {
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$items[] = array(
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'path' => 'admin/settings/taxonomy-browser',
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'title' => t('Taxonomy Browser'),
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'description' => t('Set usage guidelines and included vocabularies.'),
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'callback' => 'drupal_get_form',
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'callback arguments' => 'taxonomy_browser_admin_settings',
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'access' => user_access('administer site configuration'),
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);
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}
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else {
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$items[] = array(
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'path' => 'taxonomy_browser',
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'title' => t('Category Browser'),
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'access' => user_access(variable_get('taxonomy_browser_need_perm', false) ? 'access taxonomy browser' : 'access content'),
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'callback' => 'taxonomy_browser_page',
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'description' => t('Find content on your own terms.'),
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'type' => MENU_NORMAL_ITEM,
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);
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drupal_add_css(drupal_get_path('module', 'taxonomy_browser') .'/taxonomy_browser.css');
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}
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return $items;
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}
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/**
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* Implementation of hook_help().
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*/
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function taxonomy_browser_help($section = '') {
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switch ($section) {
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case 'admin/modules#description':
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return t('An interface for viewing content grouped by arbitrary taxonomy terms.');
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case 'taxonomy_browser':
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$output = check_markup(variable_get('taxonomy_browser_guidelines', _taxonomy_browser_guidelines_default()));
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if (user_access('administer site configuration')) {
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$output .= '<p class="links">'. l(t('Go to Taxonomy Browser settings'), 'admin/settings/taxonomy-browser', array(), drupal_get_destination()) .'</p>';
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}
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return $output;
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}
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}
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/**
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* Implementation of hook_perm().
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*/
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function taxonomy_browser_perm() {
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if (variable_get('taxonomy_browser_need_perm', false)) {
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return array('access taxonomy browser');
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}
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else {
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return array();
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}
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}
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//********************************************************************
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//* Drupal Hooks : Core
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//********************************************************************
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/**
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* Implementation of hook_block().
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*/
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function taxonomy_browser_block($op = 'list', $delta = 0, $edit = array()) {
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$block = array();
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switch ($op) {
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case 'list':
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$block[0]['info'] = t('Category browser');
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return $block;
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case 'view':
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switch ($delta) {
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case 0:
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$block = _taxonomy_browser_block_view($delta);
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break;
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}
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return $block;
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//
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// case 'configure':
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// return _taxonomy_browser_block_configure($delta);
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//
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// case 'save':
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// _taxonomy_browser_block_save($delta, $edit);
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}
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}
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/**
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* Implementation of hook_form().
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*/
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function taxonomy_browser_admin_settings() {
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if (!module_exists('node_type_filter') && !drupal_set_message()) {
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drupal_set_message(t('You do not have the node_type_filter module installed. This means that the "restrict search by content type" option will not be available on the category browser page.'), 'status');
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}
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drupal_add_js(drupal_get_path('module', 'taxonomy_browser') .'/taxonomy_browser.js', 'module');
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$form['taxonomy_browser_guidelines'] = array(
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'#title' => t('Guidelines'),
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'#type' => 'textarea',
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'#default_value' => variable_get('taxonomy_browser_guidelines', _taxonomy_browser_guidelines_default()),
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'#rows' => 2,
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'#description' => t('Instructions which should appear at top of the category browser main page'),
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);
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$form['taxonomy_browser_select_type'] = array(
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'#title' => t('Selection type'),
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'#type' => 'radios',
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'#default_value' => variable_get('taxonomy_browser_select_type', 1),
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'#options' => array(t('Selection box'), t('Check boxes')),
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'#description' => t('This option determines whether the user will see a selection list or check boxes.'),
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'#prefix' => '<div class="taxonomy_browser_radios">',
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'#suffix' => '</div>',
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);
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$form['taxonomy_browser_default_op'] = array(
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'#title' => t('"Items containing" default'),
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'#type' => 'radios',
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'#default_value' => variable_get('taxonomy_browser_default_op', 0),
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'#options' => array(t('All'), t('Any')),
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'#description' => t('This option determines which "Items containing" choice is the default.'),
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'#prefix' => '<div class="taxonomy_browser_radios">',
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'#suffix' => '</div>',
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);
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$form['taxonomy_browser_count_nodes'] = array(
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'#title' => t('Show node count'),
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'#type' => 'checkbox',
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'#default_value' => variable_get('taxonomy_browser_count_nodes', false),
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'#description' => t('Do you want to display the count of nodes tagged with each term? This can be SQL-intensive.'),
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);
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$form['taxonomy_browser_show_unused'] = array(
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'#title' => t('Show unused terms'),
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'#type' => 'checkbox',
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'#default_value' => variable_get('taxonomy_browser_show_unused', false),
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'#description' => t('Do you want to display the term if no nodes are tagged with that term? This requires "Show node count" to be selected; if it is not seleted, all terms will be shown.'),
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);
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$form['taxonomy_browser_allow_children'] = array(
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'#title' => t('Allow child terms to be included'),
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'#type' => 'checkbox',
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'#default_value' => variable_get('taxonomy_browser_allow_children', false),
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'#description' => t('Do you want the user to see a check box to include child terms (sub-terms)?'),
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);
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$form['taxonomy_browser_need_perm'] = array(
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'#title' => t('Requires permission'),
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'#type' => 'checkbox',
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'#default_value' => variable_get('taxonomy_browser_need_perm', false),
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'#description' => t('Do you want to require permission to see the browser page?'),
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);
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$select = array();
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$vocabularies = taxonomy_get_vocabularies();
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foreach ($vocabularies as $vocabulary) {
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$select[$vocabulary->vid] = $vocabulary->name;
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}
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$current_vocabs = variable_get('taxonomy_browser_vocabularies', array());
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// Occasionally we get a 0 vid in the array.
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unset($current_vocabs[0]);
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$form['taxonomy_browser_vocabularies'] = array(
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'#title' => t('Included Vocabularies'),
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'#type' => 'checkboxes',
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'#default_value' => $current_vocabs,
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'#options' => $select,
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'#description' => t('Select the vocabularies the user can select from on the category browser page.'),
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'#prefix' => '<div class="taxonomy_browser_checkboxes">',
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'#suffix' => '</div>',
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);
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if (module_exists('node_type_filter')) {
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$filter_options = node_get_types('names');
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$form['taxonomy_browser_omit'] = array(
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'#type' => 'checkboxes',
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'#title' => t('Omit content types'),
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'#options' => $filter_options,
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'#default_value' => variable_get('taxonomy_browser_omit', array('')),
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'#description' => t('If any of these types is selected, it will be omitted from the list on the "Category Browser" page.'),
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'#prefix' => '<div class="taxonomy_browser_checkboxes">',
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'#suffix' => '</div>',
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);
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}
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return system_settings_form($form);
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}
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function taxonomy_browser_admin_settings_validate($form_id, &$form_values) {
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if ($form_values['taxonomy_browser_count_nodes'] == false
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&& $form_values['taxonomy_browser_show_unused'] == true) {
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form_set_error('taxonomy_browser_show_unused', t('"Show unused" requires "count nodes."'));
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}
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}
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//********************************************************************
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//* Module Functions : Public
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//********************************************************************
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/**
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* Menu callback: the query building interface for nodes selected based on
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* taxonomy terms.
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*/
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function taxonomy_browser_page() {
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$output .= drupal_get_form('taxonomy_browser_form');
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return $output;
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}
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function taxonomy_browser_form() {
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$form = array();
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$selection_types = array('select', 'checkboxes');
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$select_type = $selection_types[variable_get('taxonomy_browser_select_type', 1)];
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$count_nodes = variable_get('taxonomy_browser_count_nodes', false);
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$show_unused = variable_get('taxonomy_browser_show_unused', false);
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$allow_children = variable_get('taxonomy_browser_allow_children', false);
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$node_types = node_get_types('names');
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$form['scope'] = array(
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'#type' => 'fieldset',
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'#title' => t('Scope'),
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'#collapsible' => true,
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'#collapsed' => false,
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'#attributes' => array('class' => 'taxonomy_browser_scope'),
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);
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if (module_exists('node_type_filter')) {
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if ($count_nodes) {
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$total_count = 0;
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$result = db_query('SELECT DISTINCT(type), COUNT(nid) AS count FROM {node} WHERE status=1 GROUP BY type ORDER BY type');
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while ($counter = db_fetch_array($result)) {
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// Check if we know about this type - a disabled module could have orphans.
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if (isset($node_types[$counter['type']])) {
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$node_types[$counter['type']] .= ' ('. $counter['count'] .')';
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}
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else {
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$node_types['unknown'] .= '<em>'. $counter['type'];
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$node_types['unknown'] .= '</em>??? ('. $counter['count'] .') ';
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watchdog('Taxonomy Browser', 'Unknown content type found: @type', array('@type' => $counter['type']), WATCHDOG_WARNING);
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}
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$total_count += $counter['count'];
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}
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}
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$omit = array_filter(variable_get('taxonomy_browser_omit', array()));
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if (!empty($omit)) {
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foreach ($omit as $omit_type) {
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unset($node_types[$omit_type]);
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}
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}
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$desc = t('Not selecting any type is the same as selecting all types.');
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if ($count_nodes) {
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$desc .= ' '. t('The total count of all types is !count.', array('!count' => $total_count));
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}
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$form['scope']['node_filter'] = array(
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// '#type' => 'checkboxes',
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'#type' => $select_type,
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'#title' => t('Restrict search by content type'),
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'#options' => $node_types,
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'#multiple' => true,
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'#prefix' => '<div class="taxonomy_browser_checkboxes">',
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'#suffix' => '</div>',
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'#description' => $desc,
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);
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}
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else {
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$form['scope']['node_filter'] = array(
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'#type' => value,
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'#value' => array(),
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);
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}
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$form['scope']['operator'] = array(
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'#type' => 'radios',
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'#title' => t('Items containing'),
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'#options' => array(t('<strong>all</strong> terms'), t('<strong>any</strong> terms')),
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'#default_value' => variable_get('taxonomy_browser_default_op', 0),
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'#prefix' => '<div class="taxonomy_browser_radios">',
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'#suffix' => '</div>',
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);
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$vocabularies = array_filter(variable_get('taxonomy_browser_vocabularies', array()));
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// Occasionally we get a 0 vid in the array.
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unset($vocabularies[0]);
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// Has the admin selected any vocabs?
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if (count($vocabularies) == 0) {
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$vocabs = taxonomy_get_vocabularies();
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foreach ($vocabs as $vocabulary) {
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$vocabularies[$vocabulary->vid] = 1;
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}
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}
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if ($allow_children) {
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$form['children'] = array(
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'#type' => 'fieldset',
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'#title' => t('Include Children'),
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'#collapsible' => true,
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'#collapsed' => false,
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);
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$form['children']['include_children'] = array(
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'#type' => 'checkbox',
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'#title' => t('Automatically include children (sub-terms)'),
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'#description' => t('If you select a term with children (sub-terms), do you want those child terms automatically included in the search? This requires that "Items containing" be "any."'),
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);
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}
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else {
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$form['include_children'] = array(
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'#type' => 'value',
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'#value' => false,
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);
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}
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$form['taxonomy'] = array(
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'#type' => 'fieldset',
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'#title' => t('Categories'),
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'#collapsible' => true,
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'#collapsed' => false,
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'#tree' => TRUE,
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);
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$selection_types = array('select', 'checkboxes');
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$i = 0;
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foreach ($vocabularies as $v => $sel) {
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$voc = taxonomy_get_vocabulary($v);
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$voc_node_types = array();
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if (isset($voc->nodes) && !empty($voc->nodes[0])) {
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foreach ($voc->nodes as $key => $type) {
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$voc_node_types[] = $node_types[$type];
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}
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}
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else {
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drupal_set_message(t('The %name vocabulary does not appear to be associated with any content types.', array('%name' => $voc->name)), 'error');
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}
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$count_types = count($voc_node_types);
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$node_type_list = implode(', ', $voc_node_types);
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$tree = taxonomy_get_tree($v);
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$term_opts = array();
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if ($tree) {
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foreach ($tree as $term) {
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$opt_string = null;
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| 363 |
if ($count_nodes) {
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// $count = db_result(db_query('SELECT COUNT(nid) FROM {term_node} WHERE tid=%d', $term->tid));
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$count = taxonomy_term_count_nodes($term->tid);
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| 366 |
if ($count > 0 || $show_unused) {
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| 367 |
$opt_string = decode_entities(check_plain($term->name)) .' ('. $count .')';
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}
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}
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else {
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$opt_string = decode_entities(check_plain($term->name));
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}
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| 373 |
if ($opt_string) {
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$term_opts[$term->tid] = str_repeat('-', $term->depth) . $opt_string;
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}
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| 376 |
}
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| 377 |
}
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| 378 |
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| 379 |
$vocname = check_plain($voc->name);
|
| 380 |
$description = $voc->description ? decode_entities(check_markup($voc->description)) : null;
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$description .= t('"!name" is used for: !types.', array('!name' => '<strong>'. $vocname .'</strong>', '!types' => (empty($node_type_list) ? '<em>'. t('nothing') .'</em>' : $node_type_list)));
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| 382 |
if (!empty($term_opts)) {
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| 383 |
$form['taxonomy'][$v] = array(
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| 384 |
'#type' => $select_type,
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| 385 |
'#title' => $vocname,
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| 386 |
'#options' => $term_opts,
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'#multiple' => true,
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'#description' => $description,
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| 389 |
'#size' => min(10, count($term_opts)),
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'#prefix' => '<div class="taxonomy_browser_'. $select_type .'">',
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'#suffix' => '</div>',
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'#field_suffix' => $node_type_list,
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'#weight' => $i,
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);
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++$i;
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}
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}
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$form['submit'] = array(
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| 400 |
'#type' => 'submit',
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| 401 |
'#value' => t('Search'),
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| 402 |
'#submit' => TRUE,
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);
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return $form;
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}
|
| 407 |
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| 408 |
/**
|
| 409 |
* Themable form output for the category browser page.
|
| 410 |
*/
|
| 411 |
function theme_taxonomy_browser_page($form) {
|
| 412 |
$output = '';
|
| 413 |
|
| 414 |
$vocabularies = variable_get('taxonomy_browser_vocabularies', array());
|
| 415 |
if (empty($vocabularies)) {
|
| 416 |
form_set_error('taxonomy_browser_page', t('You must select the vocabularies to display from the <a href="%link">taxonomy browser settings page</a>.', array('%link' => url('admin/settings/taxonomy_browser'))));
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| 417 |
return ' ';
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}
|
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| 420 |
$output .= drupal_render($form);
|
| 421 |
return $output;
|
| 422 |
}
|
| 423 |
|
| 424 |
/**
|
| 425 |
* Implementation of hook_form_validate().
|
| 426 |
*/
|
| 427 |
function taxonomy_browser_form_validate($form_id, &$form_values) {
|
| 428 |
|
| 429 |
$include_children = $form_values['include_children'];
|
| 430 |
$tids = _taxonomy_browser_get_tid_list($form_values['taxonomy'], $include_children);
|
| 431 |
|
| 432 |
$operator = $form_values['operator'] ? 'or' : 'and';
|
| 433 |
|
| 434 |
if ($operator == 'and' && $include_children == true) {
|
| 435 |
form_set_error('operator', t('You must use "Items containing <strong>any</strong>" to include child terms.'));
|
| 436 |
}
|
| 437 |
|
| 438 |
if (empty($tids)) {
|
| 439 |
form_set_error('taxonomy', t('You must select at least one category in your search.'));
|
| 440 |
}
|
| 441 |
else {
|
| 442 |
// $node_type = (isset($form_values['node_filter']) && $form_values['node_filter'] != 'all') ? $form_values['node_filter'] : NULL;
|
| 443 |
$node_type = str_replace(',0', '', implode(',', $form_values['node_filter']));
|
| 444 |
|
| 445 |
if (!taxonomy_browser_count_nodes($tids, $operator, 0, $node_type)) {
|
| 446 |
form_set_error('taxonomy', t('No posts match your criteria.'));
|
| 447 |
}
|
| 448 |
}
|
| 449 |
}
|
| 450 |
|
| 451 |
/**
|
| 452 |
* Implementation of hook_form_submit().
|
| 453 |
*/
|
| 454 |
function taxonomy_browser_form_submit($form_id, &$form_values) {
|
| 455 |
$tids = _taxonomy_browser_get_tid_list();
|
| 456 |
|
| 457 |
$operator = $form_values['operator'] ? 'or' : 'and';
|
| 458 |
$str_tids = ($operator == 'and') ? implode(',', $tids) : implode('+', $tids);
|
| 459 |
|
| 460 |
$types = array_filter($form_values['node_filter']);
|
| 461 |
$node_type = str_replace(',0', '', implode(',', $types));
|
| 462 |
|
| 463 |
if ($types) {
|
| 464 |
return array('taxonomy/term/'. $str_tids, 'type='. $node_type);
|
| 465 |
}
|
| 466 |
else {
|
| 467 |
return 'taxonomy/term/'. $str_tids;
|
| 468 |
}
|
| 469 |
|
| 470 |
}
|
| 471 |
|
| 472 |
//********************************************************************
|
| 473 |
//* Module Functions : Private
|
| 474 |
//********************************************************************
|
| 475 |
|
| 476 |
/**
|
| 477 |
* Get the output to be displayed by the block.
|
| 478 |
*
|
| 479 |
* @param
|
| 480 |
* $delta - integer for the block number.
|
| 481 |
*
|
| 482 |
* @return
|
| 483 |
* array containing the title ("subject") and content of the block.
|
| 484 |
*/
|
| 485 |
function _taxonomy_browser_block_view($delta) {
|
| 486 |
$block = array();
|
| 487 |
switch ($delta) {
|
| 488 |
case 0:
|
| 489 |
$block = array(
|
| 490 |
'content' => drupal_get_form('taxonomy_browser_form'),
|
| 491 |
);
|
| 492 |
break;
|
| 493 |
}
|
| 494 |
return $block;
|
| 495 |
}
|
| 496 |
|
| 497 |
/**
|
| 498 |
* Private function to count the number of nodes found by the user's query.
|
| 499 |
*/
|
| 500 |
function taxonomy_browser_count_nodes($tids = array(), $operator = 'or', $depth = 0, $nodetype = NULL) {
|
| 501 |
if (count($tids) > 0) {
|
| 502 |
// For each term ID, generate an array of descendant term IDs to the right depth.
|
| 503 |
$descendant_tids = array();
|
| 504 |
if ($depth === 'all') {
|
| 505 |
$depth = NULL;
|
| 506 |
}
|
| 507 |
foreach ($tids as $index => $tid) {
|
| 508 |
$term = taxonomy_get_term($tid);
|
| 509 |
$tree = taxonomy_get_tree($term->vid, $tid, -1, $depth);
|
| 510 |
$descendant_tids[] = array_merge(array($tid), array_map('_taxonomy_get_tid_from_term', $tree));
|
| 511 |
}
|
| 512 |
|
| 513 |
$type_where = null;
|
| 514 |
if ($nodetype) {
|
| 515 |
// $type_where = "n.type = '". db_escape_string($nodetype) ."'";
|
| 516 |
$type_where = "n.type IN ('". implode("', '", explode(',', db_escape_string($nodetype))) ."')";
|
| 517 |
}
|
| 518 |
|
| 519 |
if ($operator == 'or') {
|
| 520 |
$str_tids = implode(',', call_user_func_array('array_merge', $descendant_tids));
|
| 521 |
$sql_count = 'SELECT COUNT(n.nid) FROM {node} n INNER JOIN {term_node} tn USING(nid) WHERE '. ($type_where ? $type_where .' AND ' : null) ."tn.tid IN ($str_tids) ORDER BY n.sticky DESC, n.title ASC";
|
| 522 |
}
|
| 523 |
else {
|
| 524 |
$joins = '';
|
| 525 |
$wheres = array();
|
| 526 |
if ($type_where) {
|
| 527 |
$wheres[] = $type_where;
|
| 528 |
}
|
| 529 |
foreach ($descendant_tids as $index => $tids) {
|
| 530 |
$joins .= 'INNER JOIN {term_node} tn'. $index .' ON n.nid = tn'. $index .'.nid ';
|
| 531 |
$wheres[] = 'tn'. $index .'.tid IN ('. implode(',', $tids) .')';
|
| 532 |
}
|
| 533 |
$sql_count = 'SELECT COUNT(n.nid) FROM {node} n '. $joins .' WHERE '. implode(' AND ', $wheres);
|
| 534 |
}
|
| 535 |
|
| 536 |
// drupal_set_message('Count query: '. $sql_count);
|
| 537 |
return db_result(db_query(db_rewrite_sql($sql_count)));
|
| 538 |
}
|
| 539 |
|
| 540 |
return 0;
|
| 541 |
}
|
| 542 |
|
| 543 |
/**
|
| 544 |
* Transforms an unpredictably and irregularly nested set of tids (as returned
|
| 545 |
* from a taxonomy form) into a linear array of tids.
|
| 546 |
*/
|
| 547 |
function _taxonomy_browser_get_tid_list($tids = null, $include_children = false) {
|
| 548 |
static $tid_list;
|
| 549 |
|
| 550 |
if (isset($tids) && is_array($tids)) {
|
| 551 |
$tid_list = array();
|
| 552 |
foreach ($tids as $key => $tid) {
|
| 553 |
if (!empty($tid)) {
|
| 554 |
if (is_array($tid)) {
|
| 555 |
foreach ($tid as $key2 => $tid2) {
|
| 556 |
if (!empty($tid2)) {
|
| 557 |
$tid_list[$tid2] = $tid2;
|
| 558 |
}
|
| 559 |
}
|
| 560 |
}
|
| 561 |
else {
|
| 562 |
$tid_list[$tid] = $tid;
|
| 563 |
}
|
| 564 |
} /* end !empty */
|
| 565 |
} /* end foreach */
|
| 566 |
}
|
| 567 |
|
| 568 |
if ($include_children) {
|
| 569 |
foreach ($tid_list as $tid) {
|
| 570 |
_taxonomy_browser_get_kids($tid_list, $tid);
|
| 571 |
}
|
| 572 |
}
|
| 573 |
|
| 574 |
return $tid_list;
|
| 575 |
}
|
| 576 |
|
| 577 |
function _taxonomy_browser_get_kids(&$tid_list, $tid) {
|
| 578 |
$children = taxonomy_get_children($tid);
|
| 579 |
if ($children) {
|
| 580 |
foreach ($children as $child_tid => $child_term) {
|
| 581 |
_taxonomy_browser_get_kids($tid_list, $child_tid);
|
| 582 |
}
|
| 583 |
}
|
| 584 |
else {
|
| 585 |
$tid_list[$tid] = $tid;
|
| 586 |
}
|
| 587 |
}
|
| 588 |
|
| 589 |
/**
|
| 590 |
* Provides default guideline text.
|
| 591 |
*/
|
| 592 |
function _taxonomy_browser_guidelines_default() {
|
| 593 |
return t('<p>You may select multiple items from each list by holding down the <code>Ctrl</code> (Mac: <code>command</code>) key while left-clicking each item.</p>');
|
| 594 |
}
|
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