dfb0b9d1fa
higher privacy level than user privacy level. For an acceptable solution at performance level, I have implemented a cache: for a given user, each album has a representative_picture_id. This cache also avoids to perform numerous "order by rand()" SQL queries which is the case when $conf['allow_random_representative'] = true; git-svn-id: http://piwigo.org/svn/trunk@8802 68402e56-0260-453c-a942-63ccdbb3a9ee
536 lines
No EOL
14 KiB
PHP
536 lines
No EOL
14 KiB
PHP
<?php
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// +-----------------------------------------------------------------------+
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// | Piwigo - a PHP based photo gallery |
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// +-----------------------------------------------------------------------+
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// | Copyright(C) 2008-2011 Piwigo Team http://piwigo.org |
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// | Copyright(C) 2003-2008 PhpWebGallery Team http://phpwebgallery.net |
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// | Copyright(C) 2002-2003 Pierrick LE GALL http://le-gall.net/pierrick |
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// +-----------------------------------------------------------------------+
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// | This program is free software; you can redistribute it and/or modify |
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// | it under the terms of the GNU General Public License as published by |
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// | the Free Software Foundation |
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// | |
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// | This program is distributed in the hope that it will be useful, but |
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// | WITHOUT ANY WARRANTY; without even the implied warranty of |
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// | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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// | General Public License for more details. |
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// | |
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// | You should have received a copy of the GNU General Public License |
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// | along with this program; if not, write to the Free Software |
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// | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, |
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// | USA. |
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// +-----------------------------------------------------------------------+
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/**
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* Provides functions to handle categories.
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*
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*
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*/
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/**
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* Is the category accessible to the connected user ?
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*
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* Note : if the user is not authorized to see this category, page creation
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* ends (exit command in this function)
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*
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* @param int category id to verify
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* @return void
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*/
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function check_restrictions($category_id)
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{
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global $user;
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// $filter['visible_categories'] and $filter['visible_images']
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// are not used because it's not necessary (filter <> restriction)
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if (in_array($category_id, explode(',', $user['forbidden_categories'])))
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{
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access_denied();
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}
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}
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function get_categories_menu()
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{
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global $page, $user, $filter;
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$query = '
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SELECT ';
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// From CATEGORIES_TABLE
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$query.= '
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id, name, permalink, nb_images, global_rank,';
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// From USER_CACHE_CATEGORIES_TABLE
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$query.= '
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date_last, max_date_last, count_images, count_categories';
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// $user['forbidden_categories'] including with USER_CACHE_CATEGORIES_TABLE
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$query.= '
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FROM '.CATEGORIES_TABLE.' INNER JOIN '.USER_CACHE_CATEGORIES_TABLE.'
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ON id = cat_id and user_id = '.$user['id'];
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// Always expand when filter is activated
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if (!$user['expand'] and !$filter['enabled'])
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{
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$where = '
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(id_uppercat is NULL';
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if (isset($page['category']))
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{
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$where .= ' OR id_uppercat IN ('.$page['category']['uppercats'].')';
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}
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$where .= ')';
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}
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else
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{
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$where = '
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'.get_sql_condition_FandF
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(
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array
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(
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'visible_categories' => 'id',
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),
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null,
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true
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);
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}
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$where = trigger_event('get_categories_menu_sql_where',
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$where, $user['expand'], $filter['enabled'] );
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$query.= '
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WHERE '.$where.'
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;';
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$result = pwg_query($query);
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$cats = array();
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$selected_category = isset($page['category']) ? $page['category'] : null;
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while ($row = pwg_db_fetch_assoc($result))
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{
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$child_date_last = @$row['max_date_last']> @$row['date_last'];
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$row = array_merge($row,
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array(
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'NAME' => trigger_event(
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'render_category_name',
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$row['name'],
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'get_categories_menu'
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),
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'TITLE' => get_display_images_count(
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$row['nb_images'],
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$row['count_images'],
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$row['count_categories'],
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false,
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' / '
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),
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'URL' => make_index_url(array('category' => $row)),
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'LEVEL' => substr_count($row['global_rank'], '.') + 1,
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'icon_ts' => get_icon($row['max_date_last'], $child_date_last),
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'SELECTED' => $selected_category['id'] == $row['id'] ? true : false,
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'IS_UPPERCAT' => $selected_category['id_uppercat'] == $row['id'] ? true : false,
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)
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);
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array_push($cats, $row);
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if ($row['id']==@$page['category']['id']) //save the number of subcats for later optim
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$page['category']['count_categories'] = $row['count_categories'];
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}
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usort($cats, 'global_rank_compare');
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// Update filtered data
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if (function_exists('update_cats_with_filtered_data'))
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{
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update_cats_with_filtered_data($cats);
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}
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return $cats;
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}
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/**
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* Retrieve informations about a category in the database
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*
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* Returns an array with following keys :
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*
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* - comment
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* - dir : directory, might be empty for virtual categories
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* - name : an array with indexes from 0 (lowest cat name) to n (most
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* uppercat name findable)
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* - nb_images
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* - id_uppercat
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* - site_id
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* -
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*
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* @param int category id
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* @return array
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*/
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function get_cat_info( $id )
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{
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$query = '
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SELECT *
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FROM '.CATEGORIES_TABLE.'
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WHERE id = '.$id.'
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;';
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$cat = pwg_db_fetch_assoc(pwg_query($query));
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if (empty($cat))
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return null;
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foreach ($cat as $k => $v)
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{
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// If the field is true or false, the variable is transformed into a
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// boolean value.
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if ($cat[$k] == 'true' or $cat[$k] == 'false')
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{
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$cat[$k] = get_boolean( $cat[$k] );
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}
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}
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$upper_ids = explode(',', $cat['uppercats']);
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if ( count($upper_ids)==1 )
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{// no need to make a query for level 1
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$cat['upper_names'] = array(
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array(
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'id' => $cat['id'],
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'name' => $cat['name'],
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'permalink' => $cat['permalink'],
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)
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);
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}
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else
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{
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$names = array();
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$query = '
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SELECT id, name, permalink
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FROM '.CATEGORIES_TABLE.'
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WHERE id IN ('.$cat['uppercats'].')
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;';
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$names = hash_from_query($query, 'id');
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// category names must be in the same order than uppercats list
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$cat['upper_names'] = array();
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foreach ($upper_ids as $cat_id)
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{
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array_push( $cat['upper_names'], $names[$cat_id]);
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}
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}
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return $cat;
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}
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// get_complete_dir returns the concatenation of get_site_url and
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// get_local_dir
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// Example : "pets > rex > 1_year_old" is on the the same site as the
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// Piwigo files and this category has 22 for identifier
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// get_complete_dir(22) returns "./galleries/pets/rex/1_year_old/"
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function get_complete_dir( $category_id )
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{
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return get_site_url($category_id).get_local_dir($category_id);
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}
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// get_local_dir returns an array with complete path without the site url
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// Example : "pets > rex > 1_year_old" is on the the same site as the
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// Piwigo files and this category has 22 for identifier
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// get_local_dir(22) returns "pets/rex/1_year_old/"
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function get_local_dir( $category_id )
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{
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global $page;
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$uppercats = '';
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$local_dir = '';
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if ( isset( $page['plain_structure'][$category_id]['uppercats'] ) )
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{
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$uppercats = $page['plain_structure'][$category_id]['uppercats'];
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}
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else
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{
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$query = 'SELECT uppercats';
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$query.= ' FROM '.CATEGORIES_TABLE.' WHERE id = '.$category_id;
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$query.= ';';
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$row = pwg_db_fetch_assoc( pwg_query( $query ) );
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$uppercats = $row['uppercats'];
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}
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$upper_array = explode( ',', $uppercats );
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$database_dirs = array();
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$query = 'SELECT id,dir';
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$query.= ' FROM '.CATEGORIES_TABLE.' WHERE id IN ('.$uppercats.')';
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$query.= ';';
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$result = pwg_query( $query );
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while( $row = pwg_db_fetch_assoc( $result ) )
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{
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$database_dirs[$row['id']] = $row['dir'];
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}
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foreach ($upper_array as $id)
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{
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$local_dir.= $database_dirs[$id].'/';
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}
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return $local_dir;
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}
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// retrieving the site url : "http://domain.com/gallery/" or
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// simply "./galleries/"
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function get_site_url($category_id)
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{
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global $page;
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$query = '
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SELECT galleries_url
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FROM '.SITES_TABLE.' AS s,'.CATEGORIES_TABLE.' AS c
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WHERE s.id = c.site_id
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AND c.id = '.$category_id.'
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;';
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$row = pwg_db_fetch_assoc(pwg_query($query));
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return $row['galleries_url'];
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}
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// returns an array of image orders available for users/visitors
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function get_category_preferred_image_orders()
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{
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global $conf, $page;
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return trigger_event('get_category_preferred_image_orders',
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array(
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array(l10n('Default'), '', true),
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array(l10n('Average rate'), 'average_rate DESC', $conf['rate']),
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array(l10n('Most visited'), 'hit DESC', true),
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array(l10n('Creation date'), 'date_creation DESC', true),
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array(l10n('Post date'), 'date_available DESC', true),
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array(l10n('File name'), 'file ASC', true),
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array(
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l10n('Rank'),
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'rank ASC',
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('categories' == @$page['section'] and !isset($page['flat']) and !isset($page['chronology_field']) )
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),
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array( l10n('Permissions'), 'level DESC', is_admin() )
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));
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}
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function display_select_categories($categories,
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$selecteds,
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$blockname,
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$fullname = true)
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{
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global $template;
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$tpl_cats = array();
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foreach ($categories as $category)
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{
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if (!empty($category['permalink']))
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{
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$category['name'] .= ' √';
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}
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if ($fullname)
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{
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$option = get_cat_display_name_cache($category['uppercats'],
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null,
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false);
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}
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else
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{
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$option = str_repeat(' ',
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(3 * substr_count($category['global_rank'], '.')));
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$option.= '- ';
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$option.= strip_tags(
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trigger_event(
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'render_category_name',
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$category['name'],
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'display_select_categories'
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)
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);
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}
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$tpl_cats[ $category['id'] ] = $option;
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}
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$template->assign( $blockname, $tpl_cats);
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$template->assign( $blockname.'_selected', $selecteds);
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}
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function display_select_cat_wrapper($query, $selecteds, $blockname,
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$fullname = true)
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{
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$result = pwg_query($query);
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$categories = array();
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if (!empty($result))
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{
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while ($row = pwg_db_fetch_assoc($result))
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{
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array_push($categories, $row);
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}
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}
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usort($categories, 'global_rank_compare');
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display_select_categories($categories, $selecteds, $blockname, $fullname);
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}
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/**
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* returns all subcategory identifiers of given category ids
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*
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* @param array ids
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* @return array
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*/
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function get_subcat_ids($ids)
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{
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$query = '
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SELECT DISTINCT(id)
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FROM '.CATEGORIES_TABLE.'
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WHERE ';
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foreach ($ids as $num => $category_id)
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{
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is_numeric($category_id)
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or trigger_error(
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'get_subcat_ids expecting numeric, not '.gettype($category_id),
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E_USER_WARNING
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);
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if ($num > 0)
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{
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$query.= '
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OR ';
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}
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$query.= 'uppercats '.DB_REGEX_OPERATOR.' \'(^|,)'.$category_id.'(,|$)\'';
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}
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$query.= '
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;';
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$result = pwg_query($query);
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$subcats = array();
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while ($row = pwg_db_fetch_assoc($result))
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{
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array_push($subcats, $row['id']);
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}
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return $subcats;
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}
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/** finds a matching category id from a potential list of permalinks
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* @param array permalinks example: holiday holiday/france holiday/france/paris
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* @param int idx - output of the index in $permalinks that matches
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* return category id or null if no match
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*/
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function get_cat_id_from_permalinks( $permalinks, &$idx )
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{
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$in = '';
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foreach($permalinks as $permalink)
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{
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if ( !empty($in) ) $in.=', ';
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$in .= '\''.$permalink.'\'';
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}
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$query ='
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SELECT cat_id AS id, permalink, 1 AS is_old
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FROM '.OLD_PERMALINKS_TABLE.'
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WHERE permalink IN ('.$in.')
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UNION
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SELECT id, permalink, 0 AS is_old
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FROM '.CATEGORIES_TABLE.'
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WHERE permalink IN ('.$in.')
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;';
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$perma_hash = hash_from_query($query, 'permalink');
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if ( empty($perma_hash) )
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return null;
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for ($i=count($permalinks)-1; $i>=0; $i--)
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{
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if ( isset( $perma_hash[ $permalinks[$i] ] ) )
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{
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$idx = $i;
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$cat_id = $perma_hash[ $permalinks[$i] ]['id'];
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if ($perma_hash[ $permalinks[$i] ]['is_old'])
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{
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$query='
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UPDATE '.OLD_PERMALINKS_TABLE.' SET last_hit=NOW(), hit=hit+1
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WHERE permalink=\''.$permalinks[$i].'\' AND cat_id='.$cat_id.'
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LIMIT 1';
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pwg_query($query);
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}
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return $cat_id;
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}
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}
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return null;
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}
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function global_rank_compare($a, $b)
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{
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return strnatcasecmp($a['global_rank'], $b['global_rank']);
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}
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function rank_compare($a, $b)
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{
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if ($a['rank'] == $b['rank'])
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{
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return 0;
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}
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return ($a['rank'] < $b['rank']) ? -1 : 1;
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}
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/**
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* returns display text for information images of category
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*
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* @param array categories
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* @return string
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*/
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function get_display_images_count($cat_nb_images, $cat_count_images, $cat_count_categories, $short_message = true, $Separator = '\n')
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{
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$display_text = '';
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if ($cat_count_images > 0)
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{
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if ($cat_nb_images > 0 and $cat_nb_images < $cat_count_images)
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{
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$display_text.= get_display_images_count($cat_nb_images, $cat_nb_images, 0, $short_message, $Separator).$Separator;
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$cat_count_images-= $cat_nb_images;
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$cat_nb_images = 0;
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}
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//at least one image direct or indirect
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$display_text.= l10n_dec('%d photo', '%d photos', $cat_count_images);
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if ($cat_count_categories == 0 or $cat_nb_images == $cat_count_images)
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{
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//no descendant categories or descendants do not contain images
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if (! $short_message)
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{
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$display_text.= ' '.l10n('in this album');
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}
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}
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else
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{
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$display_text.= ' '.l10n_dec('in %d sub-album', 'in %d sub-albums', $cat_count_categories);
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}
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}
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return $display_text;
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}
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/**
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* Find a random photo among all photos below a given album in the tree (not
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* only photo directly associated to the album but also to sub-albums)
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*
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* we need $category['uppercats'], $category['id'], $category['count_images']
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*/
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function get_random_image_in_category($category)
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{
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$image_id = null;
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if ($category['count_images']>0)
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{
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$query = '
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SELECT image_id
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FROM '.CATEGORIES_TABLE.' AS c
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INNER JOIN '.IMAGE_CATEGORY_TABLE.' AS ic ON ic.category_id = c.id
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WHERE (c.id='.$category['id'].' OR uppercats LIKE \''.$category['uppercats'].',%\')'
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.get_sql_condition_FandF
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(
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array
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(
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'forbidden_categories' => 'c.id',
|
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'visible_categories' => 'c.id',
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'visible_images' => 'image_id',
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),
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"\n AND"
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).'
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ORDER BY '.DB_RANDOM_FUNCTION.'()
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|
LIMIT 1
|
|
;';
|
|
$result = pwg_query($query);
|
|
if (pwg_db_num_rows($result) > 0)
|
|
{
|
|
list($image_id) = pwg_db_fetch_row($result);
|
|
}
|
|
}
|
|
|
|
return $image_id;
|
|
}
|
|
?>
|