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<?php
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// $Id: node_form.inc,v 1.5 2009/01/08 19:36:08 dww Exp $
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/**
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* @file
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* Signup-related code needed while editing a node.
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*/
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/**
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* Save signup-related information when a node is created or edited.
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*
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* This is a helper function invoked via signup_nodeapi(). If signups are
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* disabled, the record from {signup} (if any) is cleared. If the signup
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* administrator editing the node decided to remove all signup data, all the
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* records from the {signup_log} table for this node are also removed. This
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* function is also responsible for testing if the node has a start time and
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* if the autoclose period has already begun, in which case signups are
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* closed. If a new node is being saved, or an existing node is updated and is
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* newly-enabled for signups, the site-wide default signup settings are copied
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* into a record in the {signup} table for this node so that the node is
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* properly signup-enabled (these settings can be changed by visiting the
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* "Settings" subtab under the "Signups" tab at node/N/signups/settings).
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*
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* @param $node
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* The node object given to signup_nodeapi().
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* @param $op
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* The hook_nodeapi() operation, either 'insert' or 'update'.
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*
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* @return
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* Nothing, this function is expected to update the database.
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*
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* @see signup_nodeapi()
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*/
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function signup_save_node($node, $op) {
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// See if a user is editing a node and disables signups for it.
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if ($op == 'update' && isset($node->signup_enabled)) {
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switch ($node->signup_enabled) {
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case 2: // Disabled, and delete {signup_log}, too
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db_query("DELETE FROM {signup_log} WHERE nid = %d", $node->nid);
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// No break, fall through and remove from {signup} too.
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case 0: // Disabled, but leave {signup_log} alone
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db_query("DELETE FROM {signup} WHERE nid = %d", $node->nid);
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// We're done.
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return;
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}
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}
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// If the form is configured to have signups enabled, or the form doesn't
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// include that information at all but the node type defaults to have
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// signups enabled (which would happen if a user without signup admin
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// permission created a node that defaulted to have signups enabled based on
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// the node type), see if we need to insert a new record into the {signup}
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// table for this node using the site-wide defaults.
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$needs_defaults = FALSE;
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if ((isset($node->signup_enabled) && $node->signup_enabled == 1) || (!isset($node->signup_enabled) && variable_get('signup_node_default_state_'. $node->type, 'disabled') == 'enabled_on')) {
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if ($op == 'insert') {
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$needs_defaults = TRUE;
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}
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else {
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// Updating -- see if we already have a record for this node.
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$has_record = db_result(db_query("SELECT nid FROM {signup} WHERE nid = %d", $node->nid));
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$needs_defaults = empty($has_record);
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}
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}
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if ($needs_defaults) {
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$values = db_fetch_array(db_query("SELECT forwarding_email, send_confirmation, confirmation_email, close_signup_limit, send_reminder, reminder_days_before, reminder_email FROM {signup} WHERE nid = 0"));
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$values[] = $node->nid;
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db_query("INSERT INTO {signup} (forwarding_email, send_confirmation, confirmation_email, close_signup_limit, send_reminder, reminder_days_before, reminder_email, nid) VALUES ('%s', %d, '%s', %d, %d, %d, '%s', %d)", $values);
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}
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$node = node_load($node->nid);
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if (_signup_node_completed($node) && !empty($node->signup_status)) {
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// If this is an time-based node, and it's already past the close in
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// advance time (e.g. someone just changed the node start time), and
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// signups are still open, close them now.
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signup_close_signup($node->nid);
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drupal_set_message(t('%node_type start time is already past the signup close-in-advance time, signups now closed.', array('%node_type' => node_get_types('name', $node->type))));
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}
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}
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/**
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* Alters the node form to inject the appropriate per-node signup settings.
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*/
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function signup_alter_node_form(&$form, &$form_state, $form_id) {
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global $user;
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// Node is not saved but previewed (nid is empty).
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if (isset($form['#node']->build_mode) && $form['#node']->build_mode == NODE_BUILD_PREVIEW) {
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$node = $form['#node'];
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}
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// Load the node if it already exists.
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elseif (!empty($form['nid']['#value'])) {
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$node = node_load($form['nid']['#value']);
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}
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else {
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$node = NULL;
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}
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$node_type = $form['type']['#value'];
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$signup_type_default = variable_get('signup_node_default_state_'. $node_type, 'disabled');
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// If signups are possible, and the current user either has the global
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// 'administer all signups' permission or has the 'administer signups
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// for own content' permission and is creating new content or editing
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// their own content, add a fieldset for signup-related settings.
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// Signups are possible if they're not explicitly disallowed for this
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// node type, or if this node is already signup-enabled (in case an
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// admin erroneously marks a node-type to disallow signups when there
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// are already nodes of that type with signups enabled).
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$signups_possible = $signup_type_default != 'disabled' || (!empty($node) && !empty($node->nid) && !empty($node->signup));
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$admin_all = user_access('administer all signups');
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$admin_own = user_access('administer signups for own content') && (empty($node) || ($node->uid == $user->uid));
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if ($signups_possible && ($admin_all || $admin_own)) {
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$form['signup'] = array(
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'#type' => 'fieldset',
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'#title' => t('Signup settings'),
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'#collapsible' => TRUE,
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'#collapsed' => TRUE,
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'#weight' => 30,
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);
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// Figure out what the options should be. If there are already
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// people signed-up for this node, we need a 3rd choice: disable
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// signups and remove all signup data.
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$has_signups = !empty($node) && db_result(db_query("SELECT COUNT(*) from {signup_log} WHERE nid = %d", $node->nid));
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$radio_options[1] = t('Enabled');
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if ($has_signups) {
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$radio_options[0] = t('Disabled, but save existing signup information');
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$radio_options[2] = t('Disabled, and remove all signup information') .' <strong>('. t('This can not be undone, use with extreme caution!') .')</strong>';
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}
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else {
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$radio_options[0] = t('Disabled');
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}
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// Figure out what the default selection for signups should be.
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if (isset($node->signup)) {
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$default_option = $node->signup;
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}
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else {
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$default_option = $signup_type_default == 'enabled_on' ? 1 : 0;
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}
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// Add the form element to toggle if signups are allowed.
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$form['signup']['signup_enabled'] = array(
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'#type' => 'radios',
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'#options' => $radio_options,
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'#default_value' => $default_option,
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'#description' => t('If enabled, you can control whether users may sign up by visiting the !signup_admin tab and toggling if signups are %open or %closed for this %node_type. Other signup-related settings can be defined at the !signup_settings tab.', array('!signup_admin' => !empty($node->signup) ? l(t('Signups: Administer'), 'node/'. $node->nid .'/signups/admin') : theme('placeholder', t('Signups: Administer')), '!signup_settings' => !empty($node->signup) ? l(t('Signups: Settings'), 'node/'. $node->nid .'/signups/settings') : theme('placeholder', t('Signups: Settings')), '%open' => t('open'), '%closed' => t('closed'), '%node_type' => node_get_types('name', $node_type))),
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);
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}
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}
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