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<?php
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// $Id: og_public_access.module,v 1.3 2007/02/05 03:26:50 davidlesieur Exp $
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/**
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* Implementation of hook_help().
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*/
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function og_public_access_help($section) {
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switch ($section) {
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case 'admin/modules#description':
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return t('Allows group administrators decide what posts are publicly accessible outside their groups.');
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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 og_public_access_perm() {
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return array('moderate public access to content in groups administered by self');
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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 og_public_access_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/og_public_access/moderate',
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'callback' => 'og_public_access_moderate',
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'access' => user_access('moderate public access to content in groups administered by self'),
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'title' => t('moderate public access to group content'),
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);
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}
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return $items;
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}
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/**
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* Implementation of hook_settings().
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*/
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function og_public_access_settings() {
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$form['og_public_access_default_option'] = array(
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'#type' => 'radios',
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'#title' => t('Which action option should be selected by default?'),
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'#options' => array(
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'approve' => t('approve'),
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'reject' => t('reject'),
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'none' => t('no action'),
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),
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'#default_value' => variable_get('og_public_access_default_option', 'none'),
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);
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$form['og_public_access_nodes_per_page'] = array(
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'#type' => 'select',
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'#title' => t('How many nodes should be displayed per page?'),
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'#options' => drupal_map_assoc(array(5, 10, 15, 20, 25, 50, 75, 100, 150, 200)),
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'#default_value' => variable_get('og_public_access_nodes_per_page', 10),
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);
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$form['og_public_access_excluded'] = array(
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'#type' => 'select',
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'#title' => t('Should any group be ignored by public access moderation?'),
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'#description' => t('Private content in all groups will appear in the public access moderation queue, except for groups selected in this list. If content is private in a selected group, it will remain private and never get into the moderation queue.'),
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'#options' => _og_public_access_get_all_groups(),
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'#multiple' => TRUE,
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'#default_value' => variable_get('og_public_access_excluded', array()),
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);
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return $form;
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}
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/**
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* Menu callback. Provide a queue with the latest posts that are private in the
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* groups where the current user is an admin.
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*/
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function og_public_access_moderate() {
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$output = '';
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_og_public_access_check_settings();
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// Retrieve groups where user is admin
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$groups = _og_public_access_get_admin_subscriptions();
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if (count($groups) == 0) {
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return '<p>'. t('You are not an administrator on any group.') .'</p>';
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}
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$gids = array_keys($groups);
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$excluded = variable_get('og_public_access_excluded', array());
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$gids = array_diff($gids, $excluded);
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if (count($gids) == 0) {
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return '<p>'. t('None of your groups needs moderation.') .'</p>';
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}
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// Retrieve nodes that are not publicly accessible in those groups. Using a
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// temporary table avoids complicated joins.
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db_query_temporary("SELECT n.nid, a.gid, n.created FROM {node} n INNER JOIN {node_access} a ON a.nid = n.nid WHERE n.status = 1 AND a.realm = 'og_subscriber' AND a.gid IN (". implode(',', $gids) .") AND a.grant_view = 1 AND NOT EXISTS (SELECT * FROM {node_access} na WHERE na.nid = n.nid AND na.realm = 'og_all' AND na.grant_view = 1)", 'temp_og_public_access');
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foreach ($gids as $gid) {
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// Ignore groups where the nodes are already publicly accessible
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db_query("DELETE n FROM temp_og_public_access n, {node_access} na WHERE na.nid = n.nid AND n.gid = %d AND na.realm = 'og_public' AND na.grant_view = %d", $gid, $gid);
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}
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$node_results = pager_query(db_rewrite_sql("SELECT DISTINCT(n.nid) FROM temp_og_public_access n ORDER BY n.created DESC"), variable_get('og_public_access_nodes_per_page', 10));
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// Build form
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$form = array();
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while ($r = db_fetch_object($node_results)) {
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// Loading the other columns in this separate query for them not to be taken
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// into account by the pager.
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$results = db_query("SELECT * FROM temp_og_public_access WHERE nid = %d", $r->nid);
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while ($r = db_fetch_object($results)) {
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og_public_access_form_update($form, $r->nid, $r->gid, $groups);
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}
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}
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$output = drupal_get_form('og_public_access_form', $form);
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$output .= theme('pager');
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return $output;
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}
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/**
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* Update form for editing public access for node $nid in group $gid.
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*/
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function og_public_access_form_update(&$form, $nid, $gid, $groups) {
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$form['#theme'] = 'og_public_access_form';
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$form['#tree'] = TRUE;
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$node = node_load($nid);
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if ($node && !og_is_group_type($node->type)) {
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$teaser = node_view($node, TRUE, FALSE, FALSE);
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$form[$node->nid]['preview'] = array(
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'#type' => 'markup',
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'#value' => $teaser
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);
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$form[$node->nid]['title'] = array(
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'#type' => 'value',
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'#value' => check_plain($node->title),
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);
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$form[$node->nid]['type'] = array(
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'#type' => 'value',
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'#value' => node_get_name($node),
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);
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$form[$node->nid][$gid]['ops'] = array(
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'#type' => 'radios',
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'#title' => $groups[$gid]['title'],
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'#options' => array(
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'approve' => t('approve'),
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'reject' => t('reject'),
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'none' => t('no action'),
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),
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'#default_value' => variable_get('og_public_access_default_option', 'none'),
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);
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$form[$node->nid][$gid]['group'] = array(
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'#type' => 'value',
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'#value' => check_plain($groups[$gid]['title']),
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);
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$form['submit'] = array(
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'#type' => 'submit',
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'#value' => t('Submit'),
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);
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}
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}
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/**
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* Form submit handler, which approves or rejects the node.
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*/
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function og_public_access_form_submit($form_id, $form_values) {
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foreach ($form_values as $nid => $node_values) {
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if (is_numeric($nid)) {
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foreach ($node_values as $gid => $values) {
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if (is_numeric($gid)) {
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switch ($values['ops']) {
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case 'approve':
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og_public_access_grant($nid, $gid);
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drupal_set_message(t('The %type %title has been approved for public viewing in group %group.', array('%title' => theme('placeholder', $node_values['title']), '%type' => $node_values['type'], '%group' => $values['group'])));
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break;
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case 'reject':
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og_public_access_reject($nid, $gid);
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drupal_set_message(t('The %type %title has been rejected from group %group.', array('%title' => theme('placeholder', $node_values['title']), '%type' => $node_values['type'], '%group' => $values['group'])));
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break;
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}
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}
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}
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}
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}
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}
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/**
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* Updates the node_access table to grant public access to node $nid in group $gid.
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*/
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function og_public_access_grant($nid, $gid) {
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db_query("DELETE FROM {node_access} WHERE nid = %d AND gid = %d AND realm = 'og_subscriber'", $nid, $gid);
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db_query("INSERT INTO {node_access} (nid, gid, realm, grant_view) VALUES (%d, 0, 'og_public', %d)", $nid, $gid);
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db_query("INSERT INTO {node_access} (nid, gid, realm, grant_view, grant_update, grant_delete) VALUES (%d, %d, 'og_subscriber', 1, 1, 1)", $nid, $gid);
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cache_clear_all();
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}
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/**
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* Updates the node_access table to remove node $nid from group $gid.
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*/
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function og_public_access_reject($nid, $gid) {
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db_query("DELETE FROM {node_access} WHERE nid = %d AND gid = %d AND realm = 'og_subscriber'", $nid, $gid);
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cache_clear_all();
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// TODO: what to do when node is neither in any group nor accessible in realm og_all?
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}
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/**
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* Return group subscriptions where the current user is a group admin.
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*/
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function _og_public_access_get_admin_subscriptions() {
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global $user;
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$subscriptions = array();
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foreach ($user->og_groups as $gid => $subscription) {
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if ($subscription['is_admin']) {
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$subscriptions[$gid] = $subscription;
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}
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}
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return $subscriptions;
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}
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/**
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* Check whether visibility can effectively be moderated.
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*/
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function _og_public_access_check_settings() {
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if (variable_get('og_visibility', 0)) {
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drupal_set_message(t('For group administrators to fully control the public visibility of content posted into their groups, the "%vis" option must be selected in the %settings.', array('%vis' => t('Visible only within the targeted groups'), '%settings' => l(t('og settings page'), 'admin/settings/og'))), 'error');
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}
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}
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/**
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* Utility function to retrieve all available groups.
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*/
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function _og_public_access_get_all_groups() {
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$groups = array();
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$results = db_query(db_rewrite_sql("SELECT og.nid, n.title FROM {og} og INNER JOIN {node} n ON og.nid = n.nid WHERE n.status = 1 ORDER BY n.title ASC", 'og', 'nid'));
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while ($g = db_fetch_object($results)) {
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$groups[$g->nid] = $g->title;
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}
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return $groups;
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}
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/**
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* Themes the public access control form.
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*/
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function theme_og_public_access_form(&$form) {
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$headers = array(
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t('content'),
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t('operations'),
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);
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$rows = array();
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foreach (element_children($form) as $nid) {
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// Only do this for nodes; not the submit button.
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if (is_numeric($nid)) {
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$row = array();
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$row[] = array(
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'data' => form_render($form[$nid]['preview']),
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'style' => 'vertical-align:top;',
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);
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$group_ops = '';
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foreach (element_children($form[$nid]) as $gid) {
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// Only do this for group data
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if (is_numeric($gid)) {
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$group_ops .= form_render($form[$nid][$gid]['ops']);
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}
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}
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$row[] = array(
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'data' => $group_ops,
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'style' => 'vertical-align:top;'
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);
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$rows[] = $row;
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}
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}
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$output = theme('table', $headers, $rows);
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$output .= form_render($form);
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return $output;
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}
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