gnu-social/plugins/Directory/actions/groupdirectory.php

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<?php
/**
* StatusNet, the distributed open-source microblogging tool
*
* Output a group directory
*
* PHP version 5
*
* LICENCE: This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* @category Public
* @package StatusNet
* @author Zach Copley <zach@status.net>
* @copyright 2011 StatusNet, Inc.
* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
* @link http://status.net/
*/
if (!defined('STATUSNET'))
{
exit(1);
}
require_once INSTALLDIR . '/lib/publicgroupnav.php';
/**
* Group directory
*
* @category Directory
* @package StatusNet
* @author Zach Copley <zach@status.net>
* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
* @link http://status.net/
*/
class GroupdirectoryAction extends Action
{
/**
* The page we're on
*
* @var integer
*/
public $page;
/**
* What to filter the search results by
*
* @var string
*/
public $filter;
/**
* Column to sort by
*
* @var string
*/
public $sort;
/**
* How to order search results, ascending or descending
*
* @var string
*/
public $reverse;
/**
* Query
*
* @var string
*/
public $q;
/**
* Title of the page
*
* @return string Title of the page
*/
function title()
{
// @fixme: This looks kinda gross
if ($this->filter == 'all') {
if ($this->page != 1) {
return(sprintf(_m('Group Directory, page %d'), $this->page));
}
return _m('Group directory');
} else if ($this->page == 1) {
return sprintf(
_m('Group directory - %s'),
strtoupper($this->filter)
);
} else {
return sprintf(
_m('Group directory - %s, page %d'),
strtoupper($this->filter),
$this->page
);
}
}
/**
* Instructions for use
*
* @return instructions for use
*/
function getInstructions()
{
// TRANS: %%site.name%% is the name of the StatusNet site.
return _m(
'Search for groups on %%site.name%% by their name, '
. 'location, or interests. Separate the terms by spaces; '
. ' they must be 3 characters or more.'
);
}
/**
* Is this page read-only?
*
* @return boolean true
*/
function isReadOnly($args)
{
return true;
}
/**
* Take arguments for running
*
* @param array $args $_REQUEST args
*
* @return boolean success flag
*/
function prepare($args)
{
parent::prepare($args);
$this->page = ($this->arg('page')) ? ($this->arg('page') + 0) : 1;
$this->filter = $this->arg('filter', 'all');
$this->reverse = $this->boolean('reverse');
$this->q = $this->trimmed('q');
$this->sort = $this->arg('sort', 'nickname');
common_set_returnto($this->selfUrl());
return true;
}
/**
* Handle request
*
* Shows the page
*
* @param array $args $_REQUEST args; handled in prepare()
*
* @return void
*/
function handle($args)
{
parent::handle($args);
$this->showPage();
}
/**
* Show the page notice
*
* Shows instructions for the page
*
* @return void
*/
function showPageNotice()
{
$instr = $this->getInstructions();
$output = common_markup_to_html($instr);
$this->elementStart('div', 'instructions');
$this->raw($output);
$this->elementEnd('div');
}
/**
* Content area
*
* Shows the list of popular notices
*
* @return void
*/
function showContent()
{
$this->showForm();
$this->elementStart('div', array('id' => 'group_directory'));
$alphaNav = new AlphaNav($this, false, false, array('0-9', 'All'));
$alphaNav->show();
$group = null;
$group = $this->getGroups();
$cnt = 0;
if (!empty($group)) {
$groupList = new SortableGroupList(
$group,
common_current_user(),
$this
);
$cnt = $groupList->show();
$group->free();
if (0 == $cnt) {
$this->showEmptyListMessage();
}
}
$args = array();
if (isset($this->q)) {
$args['q'] = $this->q;
} else {
$args['filter'] = $this->filter;
}
$this->pagination(
$this->page > 1,
$cnt > GROUPS_PER_PAGE,
$this->page,
'groupdirectory',
$args
);
$this->elementEnd('div');
}
function showForm($error=null)
{
$this->elementStart(
'form',
array(
'method' => 'get',
'id' => 'form_search',
'class' => 'form_settings',
'action' => common_local_url('groupdirectory')
)
);
$this->elementStart('fieldset');
$this->element('legend', null, _m('Search groups'));
$this->elementStart('ul', 'form_data');
$this->elementStart('li');
$this->input('q', _m('Keyword(s)'), $this->q);
$this->submit('search', _m('BUTTON','Search'));
$this->elementEnd('li');
$this->elementEnd('ul');
$this->elementEnd('fieldset');
$this->elementEnd('form');
}
/*
* Get groups filtered by the current filter, sort key,
* sort order, and page
*/
function getGroups()
{
$group = new User_group();
$offset = ($this->page-1) * GROUPS_PER_PAGE;
$limit = GROUPS_PER_PAGE + 1;
if (isset($this->q)) {
$order = 'user_group.created ASC';
if ($this->sort == 'nickname') {
if ($this->reverse) {
$order = 'user_group.nickname DESC';
} else {
$order = 'user_group.nickname ASC';
}
} else {
if ($this->reverse) {
$order = 'user_group.created DESC';
}
}
$sql = <<< GROUP_QUERY_END
SELECT user_group.*
FROM user_group
JOIN local_group ON user_group.id = local_group.group_id
ORDER BY %s
LIMIT %d, %d
GROUP_QUERY_END;
$cnt = 0;
$group->query(sprintf($sql, $order, $limit, $offset));
$group->find();
} else {
// User is browsing via AlphaNav
$sort = $this->getSortKey();
$sql = <<< GROUP_QUERY_END
SELECT user_group.*
FROM user_group
JOIN local_group ON user_group.id = local_group.group_id
GROUP_QUERY_END;
switch($this->filter)
{
case 'all':
// NOOP
break;
case '0-9':
$sql .=
' AND LEFT(user_group.nickname, 1) BETWEEN \'0\' AND \'9\'';
break;
default:
$sql .= sprintf(
' AND LEFT(LOWER(user_group.nickname), 1) = \'%s\'',
$this->filter
);
}
$sql .= sprintf(
' ORDER BY user_group.%s %s, user_group.nickname ASC LIMIT %d, %d',
$sort,
$this->reverse ? 'DESC' : 'ASC',
$offset,
$limit
);
$group->query($sql);
}
return $group;
}
/**
* Filter the sort parameter
*
* @return string a column name for sorting
*/
function getSortKey()
{
switch ($this->sort) {
case 'nickname':
return $this->sort;
break;
case 'created':
return $this->sort;
break;
default:
return 'nickname';
}
}
/**
* Show a nice message when there's no search results
*/
function showEmptyListMessage()
{
if (!empty($this->filter) && ($this->filter != 'all')) {
$this->element(
'p',
'error',
sprintf(
_m('No groups starting with %s'),
$this->filter
)
);
} else {
$this->element('p', 'error', _m('No results.'));
$message = _m(<<<E_O_T
* Make sure all words are spelled correctly.
* Try different keywords.
* Try more general keywords.
* Try fewer keywords.
E_O_T
);
$this->elementStart('div', 'help instructions');
$this->raw(common_markup_to_html($message));
$this->elementEnd('div');
}
}
// XXX This needs some adjustment
/*
function showSections()
{
$gbp = new GroupsByPostsSection($this);
$gbp->show();
$gbm = new GroupsByMembersSection($this);
$gbm->show();
}
*/
}