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<?php
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// $Id: gradebookapi.module,v 1.10 2006/11/15 02:24:11 rwohleb Exp $
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/**
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* hook_perm
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*
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* @return array
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*/
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function gradebookapi_perm() {
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return array('admin gradebookapi');
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}
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/**
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* hook_menu
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*
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* @return array
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*/
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function gradebookapi_menu($may_cache) {
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$items = array();
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// The $may_cache parameter is used to divide menu items into two parts. Those
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// returned when $may_cache is true must be consistently applicable for the
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// current user at all times; the others may change or be defined at only
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// certain paths. Most modules will have excusively cacheable menu items.
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if ($may_cache) {
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$items[] = array(
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'path' => 'admin/gradebook',
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'title' => t('Gradebook'),
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'description' => t('Administer the suite of Gradebook modules.'),
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'position' => 'right',
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'weight' => -5,
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'callback' => 'system_admin_menu_block_page',
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'access' => user_access('administer site configuration')
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);
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$items[] = array(
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'path' => 'admin/gradebook/gradebookapi',
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'title' => t('Gradebook API'),
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'description' => t('Provides a gradebook API.'),
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'callback' => 'drupal_get_form',
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'callback arguments' => array('gradebookapi_admin_settings'),
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'access' => user_access('administer site configuration'),
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'type' => MENU_NORMAL_ITEM, // optional
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);
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}
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return $items;
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}
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function gradebookapi_admin_settings() {
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$form = array();
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$form['#submit']['gradebookapi_admin_settings_submit'] = array(); // custom submit handler
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$form['#submit']['system_settings_form_submit'] = array(); // form.inc never calls the $callback if a submit handler is defined
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drupal_set_title(t('Gradebook API configuration'));
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$vid = gradebookapi_get_vid();
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$vocabulary = taxonomy_get_vocabulary($vid);
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$options = array();
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$node_types = node_get_types();
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foreach ($node_types as $id => $type)
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$options[$id] = $type->name;
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$form['nodes'] = array(
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'#type' => 'checkboxes',
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'#title' => t('Assignment Types'),
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'#default_value' => array_filter($vocabulary->nodes),
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'#options' => $options,
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'#description' => t('A list of node types you want to treat as assignments.'),
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);
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return system_settings_form($form);
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}
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function gradebookapi_admin_settings_submit($form_id, $form_values) {
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$vid = gradebookapi_get_vid();
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$vocabulary = (array)taxonomy_get_vocabulary($vid);
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$vocabulary['nodes'] = array_filter($form_values['nodes']);
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taxonomy_save_vocabulary($vocabulary);
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// TODO: look over this code
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// rebuild grades in each gradebook
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//$terms = taxonomy_get_tree($vid, 0, -1, 1);
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//foreach ($terms as $term) {
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// gradebookapi_rebuild_grades($term->tid);
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//}
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//drupal_set_message(t('Updated gradebookapi settings.'));
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}
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function gradebookapi_get_assignment_types() {
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$vid = gradebookapi_get_vid();
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$vocabulary = (array)taxonomy_get_vocabulary($vid);
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return $vocabulary['nodes'];
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}
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function gradebookapi_get_vid() {
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$vid = variable_get('gradebookapi_nav_vocabulary', '');
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if (empty($vid)) {
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// Check to see if a forum vocabulary exists
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$vid = db_result(db_query("SELECT vid FROM {vocabulary} WHERE module = '%s'", 'gradebook'));
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if (!$vid) {
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$edit = array(
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'name' => 'Gradebook',
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'multiple' => 0,
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'required' => 1,
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'hierarchy' => 1,
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'relations' => 0,
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'module' => 'gradebook',
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'nodes' => array('assignment' => 1)
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);
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taxonomy_save_vocabulary($edit);
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$vid = $edit['vid'];
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}
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variable_set('gradebookapi_nav_vocabulary', $vid);
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}
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return $vid;
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}
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function gradebookapi_gradebook_load($tid) {
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if (_gradebookapi_is_root_term($tid)) {
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return taxonomy_get_term($tid);
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}
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return FALSE;
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}
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function _gradebookapi_is_root_term($tid) {
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$parents = taxonomy_get_parents($tid);
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foreach ($parents as $parent) {
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return FALSE;
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}
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return TRUE;
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}
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// returns the gradebook for a child tid
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function gradebookapi_get_tid_gradebook($tid) {
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$parents = taxonomy_get_parents_all($tid);
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return array_pop($parents);
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}
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function gradebookapi_select_nodes($gradebook, $tids = array(), $operator = 'or', $depth = 0, $pager = TRUE, $order = 'n.sticky DESC, n.created DESC') {
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$vid = gradebookapi_get_vid();
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$tree = taxonomy_get_tree($vid, $gradebook->tid);
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$allowed_tids = array_map('_taxonomy_get_tid_from_term', $tree);
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$allowed_tids[] = $gradebook->tid;
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$use_tids = array();
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if (!count($tids)) {
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// use all tids in gradebook
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$use_tids = $allowed_tids;
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}
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else {
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// make sure tids are only in gradebook
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foreach ($tids as $tid) {
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if (in_array($tid, $allowed_tids)) {
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$use_tids[] = $tid;
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}
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}
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}
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//$tids[] = $gradebook->tid; // add in gradebook tid
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// taxonomy_select_nodes($tids = array(), $operator = 'or', $depth = 0, $pager = TRUE, $order = 'n.sticky DESC, n.created DESC')
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return _gradebookapi_select_nodes($use_tids, $operator, $depth, $pager, $order);
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}
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function _gradebookapi_select_nodes($tids = array(), $operator = 'or', $depth = 0, $pager = TRUE, $order = 'n.sticky DESC, n.created DESC') {
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if (count($tids) > 0) {
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// For each term ID, generate an array of descendant term IDs to the right depth.
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$descendant_tids = array();
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if ($depth === 'all') {
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$depth = NULL;
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}
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foreach ($tids as $index => $tid) {
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$term = taxonomy_get_term($tid);
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$tree = taxonomy_get_tree($term->vid, $tid, -1, $depth);
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$descendant_tids[] = array_merge(array($tid), array_map('_taxonomy_get_tid_from_term', $tree));
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}
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if ($operator == 'or') {
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$str_tids = implode(',', call_user_func_array('array_merge', $descendant_tids));
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$sql = 'SELECT DISTINCT(n.nid), n.sticky, n.title, n.created FROM {node} n INNER JOIN {term_node} tn ON n.nid = tn.nid INNER JOIN {term_data} td ON tn.tid = td.tid INNER JOIN {gradebookapi_assignment} a ON n.nid = a.nid WHERE tn.tid IN ('. $str_tids .') AND n.status = 1 ORDER BY '. $order;
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$sql_count = 'SELECT COUNT(DISTINCT(n.nid)) FROM {node} n INNER JOIN {term_node} tn ON n.nid = tn.nid INNER JOIN {term_data} td ON tn.tid = td.tid INNER JOIN {gradebookapi_assignment} a ON n.nid = a.nid WHERE tn.tid IN ('. $str_tids .') AND n.status = 1';
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}
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else {
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$joins = 'INNER JOIN {gradebookapi_assignment} a ON n.nid = a.nid';
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$wheres = '';
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foreach ($descendant_tids as $index => $tids) {
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$joins .= ' INNER JOIN {term_node} tn'. $index .' ON n.nid = tn'. $index .'.nid INNER JOIN {term_data} td ON tn'. $index .'.tid = td.tid';
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$wheres .= ' AND tn'. $index .'.tid IN ('. implode(',', $tids) .')';
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}
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$sql = 'SELECT DISTINCT(n.nid), n.sticky, n.title, n.created FROM {node} n '. $joins .' WHERE n.status = 1 '. $wheres .' ORDER BY '. $order;
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$sql_count = 'SELECT COUNT(DISTINCT(n.nid)) FROM {node} n ' . $joins . ' WHERE n.status = 1 ' . $wheres;
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}
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$sql = db_rewrite_sql($sql);
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$sql_count = db_rewrite_sql($sql_count);
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if ($pager) {
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$result = pager_query($sql, variable_get('default_nodes_main', 10), 0, $sql_count);
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}
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else {
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$result = db_query_range($sql, 0, variable_get('feed_default_items', 10));
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}
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}
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return $result;
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}
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function gradebookapi_get_grade($uid, $nid) {
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$grades = gradebookapi_get_grades(array('uid' => $uid, 'nid' => $nid));
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if (count($grades)) {
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return array_pop($grades);
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}
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// if no grade exists, return grade with possible value
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else {
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$result = db_query(
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'SELECT a.possible '.
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'FROM {gradebookapi_assignment} a '.
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'WHERE a.nid=%d', $nid);
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$grade = db_fetch_object($result);
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$grade->uid = $uid;
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$grade->nid = $nid;
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//gradebookapi_invoke_gradebookapi('load', 'grade', $grade);
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return $grade;
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}
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}
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function gradebookapi_get_grades($param = array()) {
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$grades = array();
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foreach ($param as $key => $value) {
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$cond[] = 'g.'. db_escape_string($key) ." = '%s'";
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$arguments[] = $value;
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}
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$cond = implode(' AND ', $cond);
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$result = db_query('SELECT g.uid, g.nid, g.earned, g.exempt, a.possible, g.timestamp, g.note FROM {gradebookapi_grade} g INNER JOIN {gradebookapi_assignment} a ON g.nid = a.nid WHERE '. $cond, $arguments);
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while ($grade = db_fetch_object($result)) {
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//gradebookapi_invoke_gradebookapi('load', 'grade', $grade);
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$grades[] = $grade;
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}
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return $grades;
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}
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function gradebookapi_get_term_grade($uid, $tid) {
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$result = db_query("SELECT uid, tid, earned, possible FROM {gradebookapi_cache} WHERE tid=%d AND uid=%d", $tid, $uid);
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$grade = db_fetch_object($result);
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//gradebookapi_invoke_gradebookapi('load', 'grade', $grade);
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return $grade;
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}
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function gradebookapi_set_grade($grade) {
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$old = gradebookapi_get_grade($grade->uid, $grade->nid);
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$grade->timestamp = time();
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if ($old->timestamp) {
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db_query("UPDATE {gradebookapi_grade} SET earned=%d, exempt=%d, timestamp=%d, note='%s' WHERE uid=%d AND nid=%d", $grade->earned, $grade->exempt, $grade->timestamp, $grade->note, $grade->uid, $grade->nid);
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//gradebookapi_invoke_gradebookapi('update', 'grade', $grade);
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}
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else {
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db_query("INSERT INTO {gradebookapi_grade} (uid, nid, earned, exempt, timestamp, note) VALUES (%d, %d, %d, %d, %d, '%s')", $grade->uid, $grade->nid, $grade->earned, $grade->exempt, $grade->timestamp, $grade->note);
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//gradebookapi_invoke_gradebookapi('insert', 'grade', $grade);
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}
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$terms = taxonomy_node_get_terms_by_vocabulary($grade->nid, gradebookapi_get_vid());
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foreach ($terms as $term) {
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gradebookapi_calc_grades($grade->uid, $term->tid);
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}
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}
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function gradebookapi_rebuild_grades($tid) {
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$children = taxonomy_get_children($tid, gradebookapi_get_vid());
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if ($children) {
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foreach ($children as $child) {
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gradebookapi_rebuild_grades($child->tid);
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}
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}
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else {
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gradebookapi_calc_term_grades($tid);
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}
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}
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function gradebookapi_clear_term_grades($tid, $recursive=TRUE, $start=TRUE) {
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db_query("DELETE FROM {gradebookapi_cache} WHERE tid=%d", $tid);
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// do a recursive delete?
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if ($recursive) {
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$children = taxonomy_get_children($tid, gradebookapi_get_vid());
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foreach ($children as $child) {
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gradebookapi_clear_term_grades($child->tid, $recursive, FALSE);
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}
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}
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// tell parents to recalc cache
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if ($start) {
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$parents = taxonomy_get_parents($tid);
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foreach ($parents as $parent) {
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gradebookapi_calc_term_grades($parent->tid);
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}
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}
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}
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function gradebookapi_calc_grades($uid, $tid, $recursive=TRUE) {
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$earned = 0;
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$possible = 0;
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$gradebook = gradebookapi_get_tid_gradebook($tid);
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//watchdog('gradebook', "_gradebook_calc_grades($uid, $tid, $recursive)");
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//print_r(debug_backtrace());
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// if UID is < 1, calc grades for ALL users
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if ($uid<=0) {
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return gradebookapi_calc_term_grades(taxonomy_get_term($tid));
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}
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// clear cache
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db_query("DELETE FROM {gradebookapi_cache} WHERE tid=%d AND uid=%d", $tid, $uid);
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// get grades from child terms
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$children = taxonomy_get_children($tid, gradebookapi_get_vid());
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foreach ($children as $child) {
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$grade = gradebookapi_get_term_grade($uid, $child->tid);
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if ($grade) {
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$earned += $grade->earned;
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$possible += $grade->possible;
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}
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}
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// get grades from nodes at this term
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$result = gradebookapi_select_nodes($gradebook, array($tid), 'or', 0, FALSE);
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while ($assignment = db_fetch_object($result)) {
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$grade = gradebookapi_get_grade($uid, $assignment->nid);
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if ($grade && !$grade->exempt) {
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$earned += $grade->earned;
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$possible += $grade->possible;
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}
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}
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// cache grade
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db_query("INSERT INTO {gradebookapi_cache} (uid, tid, earned, possible) VALUES (%d, %d, %d, %d)", $uid, $tid, $earned, $possible);
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if ($recursive) {
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// recalc parents
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$parents = taxonomy_get_parents($tid);
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foreach ($parents as $parent) {
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gradebookapi_calc_grades($uid, $parent->tid, $recursive);
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}
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}
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}
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function gradebookapi_calc_term_grades($term, $recursive=TRUE) {
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$gradebook = gradebookapi_get_tid_gradebook($term->tid);
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$students = gradebookapi_get_students($gradebook);
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if ( $str_uids = implode(',', $students) )
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$result = db_query("SELECT u.uid FROM {users} u WHERE u.status != 0 AND u.uid IN (". $str_uids .") ORDER BY u.name ASC");
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else {
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$result = FALSE;
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}
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if ($result) {
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while ($account = db_fetch_object($result)) {
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gradebookapi_calc_grades($account->uid, $term->tid, $recursive);
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}
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}
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}
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function gradebookapi_calc_assignment_grades($node) {
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$terms = taxonomy_node_get_terms_by_vocabulary($node->nid, gradebookapi_get_vid());
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foreach ($terms as $term) {
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gradebookapi_calc_term_grades($term);
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}
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}
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/**
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* hook_taxonomy
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*
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* @return NONE
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*/
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function gradebookapi_taxonomy($op, $type, $obj = NULL) {
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if ($obj['vid'] == gradebookapi_get_vid()) {
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switch ($op) {
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case 'insert':
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case 'update':
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switch ($type) {
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case 'term':
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// TODO: can this code be removed?
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// update grade cache
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| 389 |
//if ($obj['parent_old'] && ($obj['parent_old'] != $obj['parent'])) {
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// update old parent, but exclude 'tid' as hierarchy is not updated yet
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//gradebookapi_calc_term_grades($obj['parent_old'], array('tid'=>array($obj['tid'])));
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//}
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| 393 |
//gradebookapi_calc_term_grades($obj['tid']);
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// at this point, the term has been saved, but the hierarchy table has not been updated
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| 396 |
// delete the term grades from cache and force cleaning up OLD tree branch
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| 397 |
//gradebookapi_clear_term_grades($obj['tid']);
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// update new parent, forcing inclusion of 'tid'
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//gradebookapi_calc_term_grades($obj['tid'], array('parents'=>arra($obj['parent'])), array('parents'=>array($obj['parent_old'])));
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// recalc old parent, excluding current 'tid'
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| 402 |
//if ($obj['parent_old']) {
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// gradebookapi_calc_term_grades($obj['parent_old'], array('children'=>array($obj['tid'])));
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| 404 |
//}
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| 405 |
// recalc new parent, including current 'tid' and excluding old parent
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| 406 |
//gradebookapi_calc_term_grades($obj['parent'][0], array('parents'=>array($obj['parent_old'])), array('children'=>array($obj['tid'])));
|
| 407 |
break;
|
| 408 |
}
|
| 409 |
break;
|
| 410 |
case 'delete':
|
| 411 |
switch ($type) {
|
| 412 |
case 'term':
|
| 413 |
// TODO: by the time we get here, the hierarchy has already been cleaned.
|
| 414 |
// how do we tell the parent to recalc?
|
| 415 |
gradebookapi_clear_term_grades($obj['tid']);
|
| 416 |
// TODO: delete nodes associated with this term and it's children
|
| 417 |
break;
|
| 418 |
case 'vocabulary':
|
| 419 |
variable_del('gradebookapi_nav_vocabulary');
|
| 420 |
break;
|
| 421 |
}
|
| 422 |
break;
|
| 423 |
}
|
| 424 |
}
|
| 425 |
}
|
| 426 |
|
| 427 |
function gradebookapi_assignment_terms($node) {
|
| 428 |
$terms = array();
|
| 429 |
$vid = gradebookapi_get_vid();
|
| 430 |
$allterms = taxonomy_node_get_terms($node->nid);
|
| 431 |
|
| 432 |
foreach ($allterms as $term) {
|
| 433 |
// make sure we only look in the gradebook vocabulary
|
| 434 |
if ($term->vid == $vid) {
|
| 435 |
$terms[] = $term;
|
| 436 |
}
|
| 437 |
}
|
| 438 |
|
| 439 |
return $terms;
|
| 440 |
}
|
| 441 |
|
| 442 |
function gradebookapi_assignment_load($node) {
|
| 443 |
$additions = db_fetch_array(db_query('SELECT possible FROM {gradebookapi_assignment} WHERE nid = %d', $node->nid));
|
| 444 |
return $additions;
|
| 445 |
}
|
| 446 |
|
| 447 |
function gradebookapi_assignment_insert($node) {
|
| 448 |
db_query("INSERT INTO {gradebookapi_assignment} (nid, possible) VALUES (%d, %d)", $node->nid, $node->possible);
|
| 449 |
|
| 450 |
// we have to manually update terms as we can't control module order
|
| 451 |
taxonomy_node_save($node->nid, $node->taxonomy);
|
| 452 |
|
| 453 |
gradebookapi_calc_assignment_grades($node);
|
| 454 |
}
|
| 455 |
|
| 456 |
function gradebookapi_assignment_update($node) {
|
| 457 |
db_query("UPDATE {gradebookapi_assignment} SET possible = '%s' WHERE nid = %d", $node->possible, $node->nid);
|
| 458 |
|
| 459 |
// we have to manually update terms as we can't control module order
|
| 460 |
taxonomy_node_save($node->nid, $node->taxonomy);
|
| 461 |
|
| 462 |
gradebookapi_calc_assignment_grades($node);
|
| 463 |
}
|
| 464 |
|
| 465 |
function gradebookapi_assignment_delete($node) {
|
| 466 |
db_query('DELETE FROM {gradebookapi_assignment} WHERE nid = %d', $node->nid);
|
| 467 |
db_query('DELETE FROM {gradebookapi_grade} WHERE nid = %d', $node->nid);
|
| 468 |
|
| 469 |
gradebookapi_calc_assignment_grades($node);
|
| 470 |
}
|
| 471 |
|
| 472 |
function gradebookapi_assignment_view(&$node) {
|
| 473 |
// TODO: why is this not working?
|
| 474 |
$node->body = 'Possible: ' . $node->possible . '<br />' . $node->body;
|
| 475 |
$node->teaser = 'Possible: ' . $node->possible . '<br />' . $node->teaser;
|
| 476 |
}
|
| 477 |
|
| 478 |
function gradebookapi_assignment_form_elements($node) {
|
| 479 |
$form = array();
|
| 480 |
|
| 481 |
$form['gradebookapi'] = array(
|
| 482 |
'#type' => 'fieldset',
|
| 483 |
'#title' => t('Assignment Settings'),
|
| 484 |
'#tree' => FALSE,
|
| 485 |
//'#validate' => array('gradebookapi_assignment_validate' => array()),
|
| 486 |
);
|
| 487 |
$form['gradebookapi']['possible'] = array(
|
| 488 |
'#type' => 'textfield',
|
| 489 |
'#title' => t('Possible'),
|
| 490 |
'#default_value' => ($node->possible?$node->possible:'0'),
|
| 491 |
'#size' => 10,
|
| 492 |
'#maxlength' => 10,
|
| 493 |
'#required' => TRUE,
|
| 494 |
);
|
| 495 |
|
| 496 |
return $form;
|
| 497 |
}
|
| 498 |
|
| 499 |
function gradebookapi_assignment_validate($form) {
|
| 500 |
// safe int check
|
| 501 |
if (is_numeric($form->possible) ? intval($form->possible) != $form->possible : TRUE) {
|
| 502 |
form_set_error('possible', t('The possible value for the assignment must be an integer.'));
|
| 503 |
}
|
| 504 |
}
|
| 505 |
|
| 506 |
function gradebookapi_form_alter($form_id, &$form) {
|
| 507 |
if (isset($form['type']) && $form['type']['#value'] .'_node_form' == $form_id) {
|
| 508 |
$node = $form['#node'];
|
| 509 |
$types = gradebookapi_get_assignment_types();
|
| 510 |
|
| 511 |
// are we an assignment type?
|
| 512 |
if (in_array($node->type, $types)) {
|
| 513 |
$form = array_merge($form, gradebookapi_assignment_form_elements($node));
|
| 514 |
}
|
| 515 |
}
|
| 516 |
}
|
| 517 |
|
| 518 |
function gradebookapi_nodeapi($node, $op, $arg = 0) {
|
| 519 |
if (in_array($node->type, gradebookapi_get_assignment_types())) {
|
| 520 |
switch ($op) {
|
| 521 |
case 'load':
|
| 522 |
return gradebookapi_assignment_load($node);
|
| 523 |
case 'insert':
|
| 524 |
gradebookapi_assignment_insert($node);
|
| 525 |
break;
|
| 526 |
case 'update':
|
| 527 |
gradebookapi_assignment_update($node);
|
| 528 |
break;
|
| 529 |
case 'delete':
|
| 530 |
gradebookapi_assignment_delete($node);
|
| 531 |
break;
|
| 532 |
case 'view':
|
| 533 |
gradebookapi_assignment_view($node);
|
| 534 |
break;
|
| 535 |
case 'validate':
|
| 536 |
gradebookapi_assignment_validate($node);
|
| 537 |
break;
|
| 538 |
}
|
| 539 |
}
|
| 540 |
}
|
| 541 |
|
| 542 |
/*
|
| 543 |
*
|
| 544 |
* module_invoke_all('gradebookapi', $op, $type, &$obj);
|
| 545 |
* hook_gradebookapi($op, $type, &$obj);
|
| 546 |
*/
|
| 547 |
// custom module_invoke_all due to obj reference
|
| 548 |
// TODO: This needs to be reviewed and reimplemented if needed
|
| 549 |
/*
|
| 550 |
function gradebookapi_invoke_gradebookapi($op, $type, &$obj) {
|
| 551 |
$return = array();
|
| 552 |
foreach (module_implements('gradebookapi') as $name) {
|
| 553 |
$function = $name .'_gradebookapi';
|
| 554 |
$result = $function($op, $type, $obj);
|
| 555 |
if (isset($result) && is_array($result)) {
|
| 556 |
$return = array_merge($return, $result);
|
| 557 |
}
|
| 558 |
else if (isset($result)) {
|
| 559 |
$return[] = $result;
|
| 560 |
}
|
| 561 |
}
|
| 562 |
return $return;
|
| 563 |
}
|
| 564 |
*/
|
| 565 |
|
| 566 |
function gradebookapi_is_student($gradebook, $account = NULL) {
|
| 567 |
global $user;
|
| 568 |
|
| 569 |
if (is_null($account)) {
|
| 570 |
$account = $user;
|
| 571 |
}
|
| 572 |
|
| 573 |
// User #1 has all privileges:
|
| 574 |
if ($account->uid == 1) {
|
| 575 |
return TRUE;
|
| 576 |
}
|
| 577 |
|
| 578 |
$students = gradebookapi_get_students($gradebook);
|
| 579 |
if (in_array($account->uid, $students)) {
|
| 580 |
return TRUE;
|
| 581 |
}
|
| 582 |
|
| 583 |
return FALSE;
|
| 584 |
}
|
| 585 |
|
| 586 |
function gradebookapi_is_teacher($gradebook, $account = NULL) {
|
| 587 |
global $user;
|
| 588 |
|
| 589 |
if (is_null($account)) {
|
| 590 |
$account = $user;
|
| 591 |
}
|
| 592 |
|
| 593 |
// User #1 has all privileges:
|
| 594 |
if ($account->uid == 1) {
|
| 595 |
return TRUE;
|
| 596 |
}
|
| 597 |
|
| 598 |
$teachers = gradebookapi_get_teachers($gradebook);
|
| 599 |
if (in_array($account->uid, $teachers)) {
|
| 600 |
return TRUE;
|
| 601 |
}
|
| 602 |
|
| 603 |
return FALSE;
|
| 604 |
}
|
| 605 |
|
| 606 |
function gradebookapi_get_students($gradebook) {
|
| 607 |
return module_invoke_all('gradebookapi_students', $gradebook);
|
| 608 |
}
|
| 609 |
|
| 610 |
function gradebookapi_get_teachers($gradebook) {
|
| 611 |
return module_invoke_all('gradebookapi_teachers', $gradebook);
|
| 612 |
}
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