source: trunk/include/functions_category.inc.php @ 25425

Last change on this file since 25425 was 25425, checked in by mistic100, 10 years ago

delete replace_space function, modify get_cat_display_name_* functions
  • Property svn:eol-style set to LF
File size: 12.7 KB
Line 
1<?php
2// +-----------------------------------------------------------------------+
3// | Piwigo - a PHP based photo gallery                                    |
4// +-----------------------------------------------------------------------+
5// | Copyright(C) 2008-2013 Piwigo Team                  http://piwigo.org |
6// | Copyright(C) 2003-2008 PhpWebGallery Team    http://phpwebgallery.net |
7// | Copyright(C) 2002-2003 Pierrick LE GALL   http://le-gall.net/pierrick |
8// +-----------------------------------------------------------------------+
9// | This program is free software; you can redistribute it and/or modify  |
10// | it under the terms of the GNU General Public License as published by  |
11// | the Free Software Foundation                                          |
12// |                                                                       |
13// | This program is distributed in the hope that it will be useful, but   |
14// | WITHOUT ANY WARRANTY; without even the implied warranty of            |
15// | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU      |
16// | General Public License for more details.                              |
17// |                                                                       |
18// | You should have received a copy of the GNU General Public License     |
19// | along with this program; if not, write to the Free Software           |
20// | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, |
21// | USA.                                                                  |
22// +-----------------------------------------------------------------------+
23
24/**
25 * Provides functions to handle categories.
26 *
27 *
28 */
29
30/**
31 * Is the category accessible to the connected user ?
32 *
33 * Note : if the user is not authorized to see this category, page creation
34 * ends (exit command in this function)
35 *
36 * @param int category id to verify
37 * @return void
38 */
39function check_restrictions($category_id)
40{
41  global $user;
42
43  // $filter['visible_categories'] and $filter['visible_images']
44  // are not used because it's not necessary (filter <> restriction)
45  if (in_array($category_id, explode(',', $user['forbidden_categories'])))
46  {
47    access_denied();
48  }
49}
50
51function get_categories_menu()
52{
53  global $page, $user, $filter, $conf;
54
55  $query = '
56SELECT ';
57  // From CATEGORIES_TABLE
58  $query.= '
59  id, name, permalink, nb_images, global_rank,';
60  // From USER_CACHE_CATEGORIES_TABLE
61  $query.= '
62  date_last, max_date_last, count_images, count_categories';
63
64  // $user['forbidden_categories'] including with USER_CACHE_CATEGORIES_TABLE
65  $query.= '
66FROM '.CATEGORIES_TABLE.' INNER JOIN '.USER_CACHE_CATEGORIES_TABLE.'
67  ON id = cat_id and user_id = '.$user['id'];
68
69  // Always expand when filter is activated
70  if (!$user['expand'] and !$filter['enabled'])
71  {
72    $where = '
73(id_uppercat is NULL';
74    if (isset($page['category']))
75    {
76      $where .= ' OR id_uppercat IN ('.$page['category']['uppercats'].')';
77    }
78    $where .= ')';
79  }
80  else
81  {
82    $where = '
83  '.get_sql_condition_FandF
84    (
85      array
86        (
87          'visible_categories' => 'id',
88        ),
89      null,
90      true
91    );
92  }
93
94  $where = trigger_event('get_categories_menu_sql_where',
95    $where, $user['expand'], $filter['enabled'] );
96
97  $query.= '
98WHERE '.$where.'
99;';
100
101  $result = pwg_query($query);
102  $cats = array();
103  $selected_category = isset($page['category']) ? $page['category'] : null;
104  while ($row = pwg_db_fetch_assoc($result))
105  {
106    $child_date_last = @$row['max_date_last']> @$row['date_last'];
107    $row = array_merge($row,
108      array(
109        'NAME' => trigger_event(
110          'render_category_name',
111          $row['name'],
112          'get_categories_menu'
113          ),
114        'TITLE' => get_display_images_count(
115          $row['nb_images'],
116          $row['count_images'],
117          $row['count_categories'],
118          false,
119          ' / '
120          ),
121        'URL' => make_index_url(array('category' => $row)),
122        'LEVEL' => substr_count($row['global_rank'], '.') + 1,
123        'SELECTED' => $selected_category['id'] == $row['id'] ? true : false,
124        'IS_UPPERCAT' => $selected_category['id_uppercat'] == $row['id'] ? true : false,
125        )
126      );
127    if ($conf['index_new_icon'])
128    {
129      $row['icon_ts'] = get_icon($row['max_date_last'], $child_date_last);
130    }
131    $cats[] = $row;
132    if ($row['id']==@$page['category']['id']) //save the number of subcats for later optim
133      $page['category']['count_categories'] = $row['count_categories'];
134  }
135  usort($cats, 'global_rank_compare');
136
137  // Update filtered data
138  if (function_exists('update_cats_with_filtered_data'))
139  {
140    update_cats_with_filtered_data($cats);
141  }
142
143  return $cats;
144}
145
146
147/**
148 * Retrieve informations about a category in the database
149 *
150 * Returns an array with following keys :
151 *
152 *  - comment
153 *  - dir : directory, might be empty for virtual categories
154 *  - name : an array with indexes from 0 (lowest cat name) to n (most
155 *           uppercat name findable)
156 *  - nb_images
157 *  - id_uppercat
158 *  - site_id
159 *  -
160 *
161 * @param int category id
162 * @return array
163 */
164function get_cat_info( $id )
165{
166  $query = '
167SELECT *
168  FROM '.CATEGORIES_TABLE.'
169  WHERE id = '.$id.'
170;';
171  $cat = pwg_db_fetch_assoc(pwg_query($query));
172  if (empty($cat))
173    return null;
174
175  foreach ($cat as $k => $v)
176  {
177    // If the field is true or false, the variable is transformed into a
178    // boolean value.
179    if ($cat[$k] == 'true' or $cat[$k] == 'false')
180    {
181      $cat[$k] = get_boolean( $cat[$k] );
182    }
183  }
184
185  $upper_ids = explode(',', $cat['uppercats']);
186  if ( count($upper_ids)==1 )
187  {// no need to make a query for level 1
188    $cat['upper_names'] = array(
189        array(
190          'id' => $cat['id'],
191          'name' => $cat['name'],
192          'permalink' => $cat['permalink'],
193          )
194      );
195  }
196  else
197  {
198    $query = '
199  SELECT id, name, permalink
200    FROM '.CATEGORIES_TABLE.'
201    WHERE id IN ('.$cat['uppercats'].')
202  ;';
203    $names = hash_from_query($query, 'id');
204
205    // category names must be in the same order than uppercats list
206    $cat['upper_names'] = array();
207    foreach ($upper_ids as $cat_id)
208    {
209      $cat['upper_names'][] = $names[$cat_id];
210    }
211  }
212  return $cat;
213}
214
215
216
217// returns an array of image orders available for users/visitors
218function get_category_preferred_image_orders()
219{
220  global $conf, $page;
221
222  return trigger_event('get_category_preferred_image_orders', array(
223    array(l10n('Default'),                        '',                     true),
224    array(l10n('Photo title, A &rarr; Z'),        'name ASC',             true),
225    array(l10n('Photo title, Z &rarr; A'),        'name DESC',            true),
226    array(l10n('Date created, new &rarr; old'),   'date_creation DESC',   true),
227    array(l10n('Date created, old &rarr; new'),   'date_creation ASC',    true),
228    array(l10n('Date posted, new &rarr; old'),    'date_available DESC',  true),
229    array(l10n('Date posted, old &rarr; new'),    'date_available ASC',   true),
230    array(l10n('Rating score, high &rarr; low'),  'rating_score DESC',    $conf['rate']),
231    array(l10n('Rating score, low &rarr; high'),  'rating_score ASC',     $conf['rate']),
232    array(l10n('Visits, high &rarr; low'),        'hit DESC',             true),
233    array(l10n('Visits, low &rarr; high'),        'hit ASC',              true),
234    array(l10n('Permissions'),                    'level DESC',           is_admin()),
235    ));
236}
237
238function display_select_categories($categories,
239                                   $selecteds,
240                                   $blockname,
241                                   $fullname = true)
242{
243  global $template;
244
245  $tpl_cats = array();
246  foreach ($categories as $category)
247  {
248    if ($fullname)
249    {
250      $option = strip_tags(
251        get_cat_display_name_cache(
252          $category['uppercats'],
253          null
254          )
255        );
256    }
257    else
258    {
259      $option = str_repeat('&nbsp;',
260                           (3 * substr_count($category['global_rank'], '.')));
261      $option.= '- ';
262      $option.= strip_tags(
263        trigger_event(
264          'render_category_name',
265          $category['name'],
266          'display_select_categories'
267          )
268        );
269    }
270    $tpl_cats[ $category['id'] ] = $option;
271  }
272
273  $template->assign( $blockname, $tpl_cats);
274  $template->assign( $blockname.'_selected', $selecteds);
275}
276
277function display_select_cat_wrapper($query, $selecteds, $blockname,
278                                    $fullname = true)
279{
280  $categories = array_from_query($query);
281  usort($categories, 'global_rank_compare');
282  display_select_categories($categories, $selecteds, $blockname, $fullname);
283}
284
285/**
286 * returns all subcategory identifiers of given category ids
287 *
288 * @param array ids
289 * @return array
290 */
291function get_subcat_ids($ids)
292{
293  $query = '
294SELECT DISTINCT(id)
295  FROM '.CATEGORIES_TABLE.'
296  WHERE ';
297  foreach ($ids as $num => $category_id)
298  {
299    is_numeric($category_id)
300      or trigger_error(
301        'get_subcat_ids expecting numeric, not '.gettype($category_id),
302        E_USER_WARNING
303      );
304    if ($num > 0)
305    {
306      $query.= '
307    OR ';
308    }
309    $query.= 'uppercats '.DB_REGEX_OPERATOR.' \'(^|,)'.$category_id.'(,|$)\'';
310  }
311  $query.= '
312;';
313  return array_from_query($query, 'id');
314}
315
316/** finds a matching category id from a potential list of permalinks
317 * @param array permalinks example: holiday holiday/france holiday/france/paris
318 * @param int idx - output of the index in $permalinks that matches
319 * return category id or null if no match
320 */
321function get_cat_id_from_permalinks( $permalinks, &$idx )
322{
323  $in = '';
324  foreach($permalinks as $permalink)
325  {
326    if ( !empty($in) ) $in.=', ';
327    $in .= '\''.$permalink.'\'';
328  }
329  $query ='
330SELECT cat_id AS id, permalink, 1 AS is_old
331  FROM '.OLD_PERMALINKS_TABLE.'
332  WHERE permalink IN ('.$in.')
333UNION
334SELECT id, permalink, 0 AS is_old
335  FROM '.CATEGORIES_TABLE.'
336  WHERE permalink IN ('.$in.')
337;';
338  $perma_hash = hash_from_query($query, 'permalink');
339
340  if ( empty($perma_hash) )
341    return null;
342  for ($i=count($permalinks)-1; $i>=0; $i--)
343  {
344    if ( isset( $perma_hash[ $permalinks[$i] ] ) )
345    {
346      $idx = $i;
347      $cat_id = $perma_hash[ $permalinks[$i] ]['id'];
348      if ($perma_hash[ $permalinks[$i] ]['is_old'])
349      {
350        $query='
351UPDATE '.OLD_PERMALINKS_TABLE.' SET last_hit=NOW(), hit=hit+1
352  WHERE permalink=\''.$permalinks[$i].'\' AND cat_id='.$cat_id.'
353  LIMIT 1';
354        pwg_query($query);
355      }
356      return $cat_id;
357    }
358  }
359  return null;
360}
361
362function global_rank_compare($a, $b)
363{
364  return strnatcasecmp($a['global_rank'], $b['global_rank']);
365}
366
367function rank_compare($a, $b)
368{
369  return $a['rank'] - $b['rank'];
370}
371
372/**
373 * returns display text for information images of category
374 *
375 * @param array categories
376 * @return string
377 */
378function get_display_images_count($cat_nb_images, $cat_count_images, $cat_count_categories, $short_message = true, $Separator = '\n')
379{
380  $display_text = '';
381
382  if ($cat_count_images > 0)
383  {
384    if ($cat_nb_images > 0 and $cat_nb_images < $cat_count_images)
385    {
386      $display_text.= get_display_images_count($cat_nb_images, $cat_nb_images, 0, $short_message, $Separator).$Separator;
387      $cat_count_images-= $cat_nb_images;
388      $cat_nb_images = 0;
389    }
390
391    //at least one image direct or indirect
392    $display_text.= l10n_dec('%d photo', '%d photos', $cat_count_images);
393
394    if ($cat_count_categories == 0 or $cat_nb_images == $cat_count_images)
395    {
396      //no descendant categories or descendants do not contain images
397      if (! $short_message)
398      {
399        $display_text.= ' '.l10n('in this album');
400      }
401    }
402    else
403    {
404      $display_text.= ' '.l10n_dec('in %d sub-album', 'in %d sub-albums', $cat_count_categories);
405    }
406  }
407
408  return $display_text;
409}
410
411/**
412 * Find a random photo among all photos below a given album in the tree (not
413 * only photo directly associated to the album but also to sub-albums)
414 *
415 * we need $category['uppercats'], $category['id'], $category['count_images']
416 */
417function get_random_image_in_category($category, $recursive=true)
418{
419  $image_id = null;
420  if ($category['count_images']>0)
421  {
422    $query = '
423SELECT image_id
424  FROM '.CATEGORIES_TABLE.' AS c
425    INNER JOIN '.IMAGE_CATEGORY_TABLE.' AS ic ON ic.category_id = c.id
426  WHERE ';
427    if ($recursive)
428    {
429      $query.= '
430    (c.id='.$category['id'].' OR uppercats LIKE \''.$category['uppercats'].',%\')';
431    }
432    else
433    {
434      $query.= '
435    c.id='.$category['id'];
436    }
437    $query.= '
438    '.get_sql_condition_FandF
439    (
440      array
441        (
442          'forbidden_categories' => 'c.id',
443          'visible_categories' => 'c.id',
444          'visible_images' => 'image_id',
445        ),
446      "\n  AND"
447    ).'
448  ORDER BY '.DB_RANDOM_FUNCTION.'()
449  LIMIT 1
450;';
451    $result = pwg_query($query);
452    if (pwg_db_num_rows($result) > 0)
453    {
454      list($image_id) = pwg_db_fetch_row($result);
455    }
456  }
457
458  return $image_id;
459}
460
461
462?>
Note: See TracBrowser for help on using the repository browser.