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Developer Documentation
- Bug fixes for general core bugs in 3.11.x will end 14 Nov 2022 (12 months plus 6 months extension).
- Bug fixes for security issues in 3.11.x will end 13 Nov 2023 (18 months plus 12 months extension).
- PHP version: minimum PHP 7.3.0 Note: minimum PHP version has increased since Moodle 3.10. PHP 7.4.x is supported too.
/mod/wiki/ -> locallib.php (source)
Differences Between: [Versions 311 and 402] [Versions 311 and 403]
1 <?php 2 3 // This file is part of Moodle - http://moodle.org/ 4 // 5 // Moodle is free software: you can redistribute it and/or modify 6 // it under the terms of the GNU General Public License as published by 7 // the Free Software Foundation, either version 3 of the License, or 8 // (at your option) any later version. 9 // 10 // Moodle is distributed in the hope that it will be useful, 11 // but WITHOUT ANY WARRANTY; without even the implied warranty of 12 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13 // GNU General Public License for more details. 14 // 15 // You should have received a copy of the GNU General Public License 16 // along with Moodle. If not, see <http://www.gnu.org/licenses/>. 17 18 /** 19 * This contains functions and classes that will be used by scripts in wiki module 20 * 21 * @package mod_wiki 22 * @copyright 2009 Marc Alier, Jordi Piguillem marc.alier@upc.edu 23 * @copyright 2009 Universitat Politecnica de Catalunya http://www.upc.edu 24 * 25 * @author Jordi Piguillem 26 * @author Marc Alier 27 * @author David Jimenez 28 * @author Josep Arus 29 * @author Daniel Serrano 30 * @author Kenneth Riba 31 * 32 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later 33 */ 34 35 defined('MOODLE_INTERNAL') || die(); 36 37 require_once($CFG->dirroot . '/mod/wiki/lib.php'); 38 require_once($CFG->dirroot . '/mod/wiki/parser/parser.php'); 39 require_once($CFG->libdir . '/filelib.php'); 40 41 define('WIKI_REFRESH_CACHE_TIME', 30); // @TODO: To be deleted. 42 define('FORMAT_CREOLE', '37'); 43 define('FORMAT_NWIKI', '38'); 44 define('NO_VALID_RATE', '-999'); 45 define('IMPROVEMENT', '+'); 46 define('EQUAL', '='); 47 define('WORST', '-'); 48 49 define('LOCK_TIMEOUT', 30); 50 51 /** 52 * Get a wiki instance 53 * @param int $wikiid the instance id of wiki 54 */ 55 function wiki_get_wiki($wikiid) { 56 global $DB; 57 58 return $DB->get_record('wiki', array('id' => $wikiid)); 59 } 60 61 /** 62 * Get sub wiki instances with same wiki id 63 * @param int $wikiid 64 */ 65 function wiki_get_subwikis($wikiid) { 66 global $DB; 67 return $DB->get_records('wiki_subwikis', array('wikiid' => $wikiid)); 68 } 69 70 /** 71 * Get a sub wiki instance by wiki id and group id 72 * @param int $wikiid 73 * @param int $groupid 74 * @return object 75 */ 76 function wiki_get_subwiki_by_group($wikiid, $groupid, $userid = 0) { 77 global $DB; 78 return $DB->get_record('wiki_subwikis', array('wikiid' => $wikiid, 'groupid' => $groupid, 'userid' => $userid)); 79 } 80 81 /** 82 * Get a sub wiki instace by instance id 83 * @param int $subwikiid 84 * @return object 85 */ 86 function wiki_get_subwiki($subwikiid) { 87 global $DB; 88 return $DB->get_record('wiki_subwikis', array('id' => $subwikiid)); 89 90 } 91 92 /** 93 * Add a new sub wiki instance 94 * @param int $wikiid 95 * @param int $groupid 96 * @return int $insertid 97 */ 98 function wiki_add_subwiki($wikiid, $groupid, $userid = 0) { 99 global $DB; 100 101 $record = new StdClass(); 102 $record->wikiid = $wikiid; 103 $record->groupid = $groupid; 104 $record->userid = $userid; 105 106 $insertid = $DB->insert_record('wiki_subwikis', $record); 107 return $insertid; 108 } 109 110 /** 111 * Get a wiki instance by pageid 112 * @param int $pageid 113 * @return object 114 */ 115 function wiki_get_wiki_from_pageid($pageid) { 116 global $DB; 117 118 $sql = "SELECT w.* 119 FROM {wiki} w, {wiki_subwikis} s, {wiki_pages} p 120 WHERE p.id = ? AND 121 p.subwikiid = s.id AND 122 s.wikiid = w.id"; 123 124 return $DB->get_record_sql($sql, array($pageid)); 125 } 126 127 /** 128 * Get a wiki page by pageid 129 * @param int $pageid 130 * @return object 131 */ 132 function wiki_get_page($pageid) { 133 global $DB; 134 return $DB->get_record('wiki_pages', array('id' => $pageid)); 135 } 136 137 /** 138 * Get latest version of wiki page 139 * @param int $pageid 140 * @return object 141 */ 142 function wiki_get_current_version($pageid) { 143 global $DB; 144 145 // @TODO: Fix this query 146 $sql = "SELECT * 147 FROM {wiki_versions} 148 WHERE pageid = ? 149 ORDER BY version DESC"; 150 $records = $DB->get_records_sql($sql, array($pageid), 0, 1); 151 return array_pop($records); 152 153 } 154 155 /** 156 * Alias of wiki_get_current_version 157 * @TODO, does the exactly same thing as wiki_get_current_version, should be removed 158 * @param int $pageid 159 * @return object 160 */ 161 function wiki_get_last_version($pageid) { 162 return wiki_get_current_version($pageid); 163 } 164 165 /** 166 * Get page section 167 * @param int $pageid 168 * @param string $section 169 */ 170 function wiki_get_section_page($page, $section) { 171 172 $version = wiki_get_current_version($page->id); 173 return wiki_parser_proxy::get_section($version->content, $version->contentformat, $section); 174 } 175 176 /** 177 * Get a wiki page by page title 178 * @param int $swid, sub wiki id 179 * @param string $title 180 * @return object 181 */ 182 function wiki_get_page_by_title($swid, $title) { 183 global $DB; 184 return $DB->get_record('wiki_pages', array('subwikiid' => $swid, 'title' => $title)); 185 } 186 187 /** 188 * Get a version record by record id 189 * @param int $versionid, the version id 190 * @return object 191 */ 192 function wiki_get_version($versionid) { 193 global $DB; 194 return $DB->get_record('wiki_versions', array('id' => $versionid)); 195 } 196 197 /** 198 * Get first page of wiki instace 199 * @param int $subwikiid 200 * @param int $module, wiki instance object 201 */ 202 function wiki_get_first_page($subwikid, $module = null) { 203 global $DB, $USER; 204 205 $sql = "SELECT p.* 206 FROM {wiki} w, {wiki_subwikis} s, {wiki_pages} p 207 WHERE s.id = ? AND 208 s.wikiid = w.id AND 209 w.firstpagetitle = p.title AND 210 p.subwikiid = s.id"; 211 return $DB->get_record_sql($sql, array($subwikid)); 212 } 213 214 function wiki_save_section($wikipage, $sectiontitle, $sectioncontent, $userid) { 215 216 $wiki = wiki_get_wiki_from_pageid($wikipage->id); 217 $cm = get_coursemodule_from_instance('wiki', $wiki->id); 218 $context = context_module::instance($cm->id); 219 220 if (has_capability('mod/wiki:editpage', $context)) { 221 $version = wiki_get_current_version($wikipage->id); 222 $content = wiki_parser_proxy::get_section($version->content, $version->contentformat, $sectiontitle, true); 223 224 $newcontent = $content[0] . $sectioncontent . $content[2]; 225 226 return wiki_save_page($wikipage, $newcontent, $userid); 227 } else { 228 return false; 229 } 230 } 231 232 /** 233 * Save page content 234 * @param object $wikipage 235 * @param string $newcontent 236 * @param int $userid 237 */ 238 function wiki_save_page($wikipage, $newcontent, $userid) { 239 global $DB; 240 241 $wiki = wiki_get_wiki_from_pageid($wikipage->id); 242 $cm = get_coursemodule_from_instance('wiki', $wiki->id); 243 $context = context_module::instance($cm->id); 244 245 if (has_capability('mod/wiki:editpage', $context)) { 246 $version = wiki_get_current_version($wikipage->id); 247 248 $version->content = $newcontent; 249 $version->userid = $userid; 250 $version->version++; 251 $version->timecreated = time(); 252 $version->id = $DB->insert_record('wiki_versions', $version); 253 254 $wikipage->timemodified = $version->timecreated; 255 $wikipage->userid = $userid; 256 $return = wiki_refresh_cachedcontent($wikipage, $newcontent); 257 $event = \mod_wiki\event\page_updated::create( 258 array( 259 'context' => $context, 260 'objectid' => $wikipage->id, 261 'relateduserid' => $userid, 262 'other' => array( 263 'newcontent' => $newcontent 264 ) 265 )); 266 $event->add_record_snapshot('wiki', $wiki); 267 $event->add_record_snapshot('wiki_pages', $wikipage); 268 $event->add_record_snapshot('wiki_versions', $version); 269 $event->trigger(); 270 return $return; 271 } else { 272 return false; 273 } 274 } 275 276 function wiki_refresh_cachedcontent($page, $newcontent = null) { 277 global $DB; 278 279 $version = wiki_get_current_version($page->id); 280 if (empty($version)) { 281 return null; 282 } 283 if (!isset($newcontent)) { 284 $newcontent = $version->content; 285 } 286 287 $options = array('swid' => $page->subwikiid, 'pageid' => $page->id); 288 $parseroutput = wiki_parse_content($version->contentformat, $newcontent, $options); 289 $page->cachedcontent = $parseroutput['toc'] . $parseroutput['parsed_text']; 290 $page->timerendered = time(); 291 $DB->update_record('wiki_pages', $page); 292 293 wiki_refresh_page_links($page, $parseroutput['link_count']); 294 295 return array('page' => $page, 'sections' => $parseroutput['repeated_sections'], 'version' => $version->version); 296 } 297 298 /** 299 * Restore a page with specified version. 300 * 301 * @param stdClass $wikipage wiki page record 302 * @param stdClass $version wiki page version to restore 303 * @param context_module $context context of wiki module 304 * @return stdClass restored page 305 */ 306 function wiki_restore_page($wikipage, $version, $context) { 307 $return = wiki_save_page($wikipage, $version->content, $version->userid); 308 $event = \mod_wiki\event\page_version_restored::create( 309 array( 310 'context' => $context, 311 'objectid' => $version->id, 312 'other' => array( 313 'pageid' => $wikipage->id 314 ) 315 )); 316 $event->add_record_snapshot('wiki_versions', $version); 317 $event->trigger(); 318 return $return['page']; 319 } 320 321 function wiki_refresh_page_links($page, $links) { 322 global $DB; 323 324 $DB->delete_records('wiki_links', array('frompageid' => $page->id)); 325 foreach ($links as $linkname => $linkinfo) { 326 327 $newlink = new stdClass(); 328 $newlink->subwikiid = $page->subwikiid; 329 $newlink->frompageid = $page->id; 330 331 if ($linkinfo['new']) { 332 $newlink->tomissingpage = $linkname; 333 } else { 334 $newlink->topageid = $linkinfo['pageid']; 335 } 336 337 try { 338 $DB->insert_record('wiki_links', $newlink); 339 } catch (dml_exception $e) { 340 debugging($e->getMessage()); 341 } 342 343 } 344 } 345 346 /** 347 * Create a new wiki page, if the page exists, return existing pageid 348 * @param int $swid 349 * @param string $title 350 * @param string $format 351 * @param int $userid 352 */ 353 function wiki_create_page($swid, $title, $format, $userid) { 354 global $DB; 355 $subwiki = wiki_get_subwiki($swid); 356 $cm = get_coursemodule_from_instance('wiki', $subwiki->wikiid); 357 $context = context_module::instance($cm->id); 358 require_capability('mod/wiki:editpage', $context); 359 // if page exists 360 if ($page = wiki_get_page_by_title($swid, $title)) { 361 return $page->id; 362 } 363 364 // Creating a new empty version 365 $version = new stdClass(); 366 $version->content = ''; 367 $version->contentformat = $format; 368 $version->version = 0; 369 $version->timecreated = time(); 370 $version->userid = $userid; 371 372 $versionid = null; 373 $versionid = $DB->insert_record('wiki_versions', $version); 374 375 // Createing a new empty page 376 $page = new stdClass(); 377 $page->subwikiid = $swid; 378 $page->title = $title; 379 $page->cachedcontent = ''; 380 $page->timecreated = $version->timecreated; 381 $page->timemodified = $version->timecreated; 382 $page->timerendered = $version->timecreated; 383 $page->userid = $userid; 384 $page->pageviews = 0; 385 $page->readonly = 0; 386 387 $pageid = $DB->insert_record('wiki_pages', $page); 388 389 // Setting the pageid 390 $version->id = $versionid; 391 $version->pageid = $pageid; 392 $DB->update_record('wiki_versions', $version); 393 394 $event = \mod_wiki\event\page_created::create( 395 array( 396 'context' => $context, 397 'objectid' => $pageid 398 ) 399 ); 400 $event->trigger(); 401 402 wiki_make_cache_expire($page->title); 403 return $pageid; 404 } 405 406 function wiki_make_cache_expire($pagename) { 407 global $DB; 408 409 $sql = "UPDATE {wiki_pages} 410 SET timerendered = 0 411 WHERE id IN ( SELECT l.frompageid 412 FROM {wiki_links} l 413 WHERE l.tomissingpage = ? 414 )"; 415 $DB->execute ($sql, array($pagename)); 416 } 417 418 /** 419 * Get a specific version of page 420 * @param int $pageid 421 * @param int $version 422 */ 423 function wiki_get_wiki_page_version($pageid, $version) { 424 global $DB; 425 return $DB->get_record('wiki_versions', array('pageid' => $pageid, 'version' => $version)); 426 } 427 428 /** 429 * Get version list 430 * @param int $pageid 431 * @param int $limitfrom 432 * @param int $limitnum 433 */ 434 function wiki_get_wiki_page_versions($pageid, $limitfrom, $limitnum) { 435 global $DB; 436 return $DB->get_records('wiki_versions', array('pageid' => $pageid), 'version DESC', '*', $limitfrom, $limitnum); 437 } 438 439 /** 440 * Count the number of page version 441 * @param int $pageid 442 */ 443 function wiki_count_wiki_page_versions($pageid) { 444 global $DB; 445 return $DB->count_records('wiki_versions', array('pageid' => $pageid)); 446 } 447 448 /** 449 * Get linked from page 450 * @param int $pageid 451 */ 452 function wiki_get_linked_to_pages($pageid) { 453 global $DB; 454 return $DB->get_records('wiki_links', array('frompageid' => $pageid)); 455 } 456 457 /** 458 * Get linked from page 459 * @param int $pageid 460 */ 461 function wiki_get_linked_from_pages($pageid) { 462 global $DB; 463 return $DB->get_records('wiki_links', array('topageid' => $pageid)); 464 } 465 466 /** 467 * Get pages which user have been edited 468 * @param int $swid 469 * @param int $userid 470 */ 471 function wiki_get_contributions($swid, $userid) { 472 global $DB; 473 474 $sql = "SELECT v.* 475 FROM {wiki_versions} v, {wiki_pages} p 476 WHERE p.subwikiid = ? AND 477 v.pageid = p.id AND 478 v.userid = ?"; 479 480 return $DB->get_records_sql($sql, array($swid, $userid)); 481 } 482 483 /** 484 * Get missing or empty pages in wiki 485 * @param int $swid sub wiki id 486 */ 487 function wiki_get_missing_or_empty_pages($swid) { 488 global $DB; 489 490 $sql = "SELECT DISTINCT p.title, p.id, p.subwikiid 491 FROM {wiki} w, {wiki_subwikis} s, {wiki_pages} p 492 WHERE s.wikiid = w.id and 493 s.id = ? and 494 w.firstpagetitle != p.title and 495 p.subwikiid = ? and 496 1 = (SELECT count(*) 497 FROM {wiki_versions} v 498 WHERE v.pageid = p.id) 499 UNION 500 SELECT DISTINCT l.tomissingpage as title, 0 as id, l.subwikiid 501 FROM {wiki_links} l 502 WHERE l.subwikiid = ? and 503 l.topageid = 0"; 504 505 return $DB->get_records_sql($sql, array($swid, $swid, $swid)); 506 } 507 508 /** 509 * Get pages list in wiki 510 * @param int $swid sub wiki id 511 * @param string $sort How to sort the pages. By default, title ASC. 512 */ 513 function wiki_get_page_list($swid, $sort = 'title ASC') { 514 global $DB; 515 $records = $DB->get_records('wiki_pages', array('subwikiid' => $swid), $sort); 516 return $records; 517 } 518 519 /** 520 * Return a list of orphaned wikis for one specific subwiki 521 * @global object 522 * @param int $swid sub wiki id 523 */ 524 function wiki_get_orphaned_pages($swid) { 525 global $DB; 526 527 $sql = "SELECT p.id, p.title 528 FROM {wiki_pages} p, {wiki} w , {wiki_subwikis} s 529 WHERE p.subwikiid = ? 530 AND s.id = ? 531 AND w.id = s.wikiid 532 AND p.title != w.firstpagetitle 533 AND p.id NOT IN (SELECT topageid FROM {wiki_links} WHERE subwikiid = ?)"; 534 535 return $DB->get_records_sql($sql, array($swid, $swid, $swid)); 536 } 537 538 /** 539 * Search wiki title 540 * @param int $swid sub wiki id 541 * @param string $search 542 */ 543 function wiki_search_title($swid, $search) { 544 global $DB; 545 546 return $DB->get_records_select('wiki_pages', "subwikiid = ? AND title LIKE ?", array($swid, '%'.$search.'%')); 547 } 548 549 /** 550 * Search wiki content 551 * @param int $swid sub wiki id 552 * @param string $search 553 */ 554 function wiki_search_content($swid, $search) { 555 global $DB; 556 557 return $DB->get_records_select('wiki_pages', "subwikiid = ? AND cachedcontent LIKE ?", array($swid, '%'.$search.'%')); 558 } 559 560 /** 561 * Search wiki title and content 562 * @param int $swid sub wiki id 563 * @param string $search 564 */ 565 function wiki_search_all($swid, $search) { 566 global $DB; 567 568 return $DB->get_records_select('wiki_pages', "subwikiid = ? AND (cachedcontent LIKE ? OR title LIKE ?)", array($swid, '%'.$search.'%', '%'.$search.'%')); 569 } 570 571 /** 572 * Get user data 573 */ 574 function wiki_get_user_info($userid) { 575 global $DB; 576 return $DB->get_record('user', array('id' => $userid)); 577 } 578 579 /** 580 * Increase page view nubmer 581 * @param int $page, database record 582 */ 583 function wiki_increment_pageviews($page) { 584 global $DB; 585 586 $page->pageviews++; 587 $DB->update_record('wiki_pages', $page); 588 } 589 590 //---------------------------------------------------------- 591 //---------------------------------------------------------- 592 593 /** 594 * Text format supported by wiki module 595 */ 596 function wiki_get_formats() { 597 return array('html', 'creole', 'nwiki'); 598 } 599 600 /** 601 * Parses a string with the wiki markup language in $markup. 602 * 603 * @return Array or false when something wrong has happened. 604 * 605 * Returned array contains the following fields: 606 * 'parsed_text' => String. Contains the parsed wiki content. 607 * 'unparsed_text' => String. Constains the original wiki content. 608 * 'link_count' => Array of array('destination' => ..., 'new' => "is new?"). Contains the internal wiki links found in the wiki content. 609 * 'deleted_sections' => the list of deleted sections. 610 * '' => 611 * 612 * @author Josep Arús Pous 613 **/ 614 function wiki_parse_content($markup, $pagecontent, $options = array()) { 615 global $PAGE; 616 617 $subwiki = wiki_get_subwiki($options['swid']); 618 $cm = get_coursemodule_from_instance("wiki", $subwiki->wikiid); 619 $context = context_module::instance($cm->id); 620 621 $parser_options = array( 622 'link_callback' => '/mod/wiki/locallib.php:wiki_parser_link', 623 'link_callback_args' => array('swid' => $options['swid']), 624 'table_callback' => '/mod/wiki/locallib.php:wiki_parser_table', 625 'real_path_callback' => '/mod/wiki/locallib.php:wiki_parser_real_path', 626 'real_path_callback_args' => array( 627 'context' => $context, 628 'component' => 'mod_wiki', 629 'filearea' => 'attachments', 630 'subwikiid'=> $subwiki->id, 631 'pageid' => $options['pageid'] 632 ), 633 'pageid' => $options['pageid'], 634 'pretty_print' => (isset($options['pretty_print']) && $options['pretty_print']), 635 'printable' => (isset($options['printable']) && $options['printable']) 636 ); 637 638 return wiki_parser_proxy::parse($pagecontent, $markup, $parser_options); 639 } 640 641 /** 642 * This function is the parser callback to parse wiki links. 643 * 644 * It returns the necesary information to print a link. 645 * 646 * NOTE: Empty pages and non-existent pages must be print in red color. 647 * 648 * !!!!!! IMPORTANT !!!!!! 649 * It is critical that you call format_string on the content before it is used. 650 * 651 * @param string|page_wiki $link name of a page 652 * @param array $options 653 * @return array Array('content' => string, 'url' => string, 'new' => bool, 'link_info' => array) 654 * 655 * @TODO Doc return and options 656 */ 657 function wiki_parser_link($link, $options = null) { 658 global $CFG; 659 660 if (is_object($link)) { 661 $parsedlink = array('content' => $link->title, 'url' => $CFG->wwwroot . '/mod/wiki/view.php?pageid=' . $link->id, 'new' => false, 'link_info' => array('link' => $link->title, 'pageid' => $link->id, 'new' => false)); 662 663 $version = wiki_get_current_version($link->id); 664 if ($version->version == 0) { 665 $parsedlink['new'] = true; 666 } 667 return $parsedlink; 668 } else { 669 $swid = $options['swid']; 670 671 if ($page = wiki_get_page_by_title($swid, $link)) { 672 $parsedlink = array('content' => $link, 'url' => $CFG->wwwroot . '/mod/wiki/view.php?pageid=' . $page->id, 'new' => false, 'link_info' => array('link' => $link, 'pageid' => $page->id, 'new' => false)); 673 674 $version = wiki_get_current_version($page->id); 675 if ($version->version == 0) { 676 $parsedlink['new'] = true; 677 } 678 679 return $parsedlink; 680 681 } else { 682 return array('content' => $link, 'url' => $CFG->wwwroot . '/mod/wiki/create.php?swid=' . $swid . '&title=' . urlencode($link) . '&action=new', 'new' => true, 'link_info' => array('link' => $link, 'new' => true, 'pageid' => 0)); 683 } 684 } 685 } 686 687 /** 688 * Returns the table fully parsed (HTML) 689 * 690 * @return HTML for the table $table 691 * @author Josep Arús Pous 692 * 693 **/ 694 function wiki_parser_table($table) { 695 global $OUTPUT; 696 697 $htmltable = new html_table(); 698 699 $headers = $table[0]; 700 $htmltable->head = array(); 701 foreach ($headers as $h) { 702 $htmltable->head[] = $h[1]; 703 } 704 705 array_shift($table); 706 $htmltable->data = array(); 707 foreach ($table as $row) { 708 $row_data = array(); 709 foreach ($row as $r) { 710 $row_data[] = $r[1]; 711 } 712 $htmltable->data[] = $row_data; 713 } 714 715 return html_writer::table($htmltable); 716 } 717 718 /** 719 * Returns an absolute path link, unless there is no such link. 720 * 721 * @param string $url Link's URL or filename 722 * @param stdClass $context filearea params 723 * @param string $component The component the file is associated with 724 * @param string $filearea The filearea the file is stored in 725 * @param int $swid Sub wiki id 726 * 727 * @return string URL for files full path 728 */ 729 730 function wiki_parser_real_path($url, $context, $component, $filearea, $swid) { 731 global $CFG; 732 733 if (preg_match("/^(?:http|ftp)s?\:\/\//", $url)) { 734 return $url; 735 } else { 736 737 $file = 'pluginfile.php'; 738 if (!$CFG->slasharguments) { 739 $file = $file . '?file='; 740 } 741 $baseurl = "$CFG->wwwroot/$file/{$context->id}/$component/$filearea/$swid/"; 742 // it is a file in current file area 743 return $baseurl . $url; 744 } 745 } 746 747 /** 748 * Returns the token used by a wiki language to represent a given tag or "object" (bold -> **) 749 * 750 * @return A string when it has only one token at the beginning (f. ex. lists). An array composed by 2 strings when it has 2 tokens, one at the beginning and one at the end (f. ex. italics). Returns false otherwise. 751 * @author Josep Arús Pous 752 **/ 753 function wiki_parser_get_token($markup, $name) { 754 755 return wiki_parser_proxy::get_token($name, $markup); 756 } 757 758 /** 759 * Checks if current user can view a subwiki 760 * 761 * @param stdClass $subwiki usually record from {wiki_subwikis}. Must contain fields 'wikiid', 'groupid', 'userid'. 762 * If it also contains fields 'course' and 'groupmode' from table {wiki} it will save extra DB query. 763 * @param stdClass $wiki optional wiki object if known 764 * @return bool 765 */ 766 function wiki_user_can_view($subwiki, $wiki = null) { 767 global $USER; 768 769 if (empty($wiki) || $wiki->id != $subwiki->wikiid) { 770 $wiki = wiki_get_wiki($subwiki->wikiid); 771 } 772 $modinfo = get_fast_modinfo($wiki->course); 773 if (!isset($modinfo->instances['wiki'][$subwiki->wikiid])) { 774 // Module does not exist. 775 return false; 776 } 777 $cm = $modinfo->instances['wiki'][$subwiki->wikiid]; 778 if (!$cm->uservisible) { 779 // The whole module is not visible to the current user. 780 return false; 781 } 782 $context = context_module::instance($cm->id); 783 784 // Working depending on activity groupmode 785 switch (groups_get_activity_groupmode($cm)) { 786 case NOGROUPS: 787 788 if ($wiki->wikimode == 'collaborative') { 789 // Collaborative Mode: 790 // There is one wiki for all the class. 791 // 792 // Only view capbility needed 793 return has_capability('mod/wiki:viewpage', $context); 794 } else if ($wiki->wikimode == 'individual') { 795 // Individual Mode: 796 // Each person owns a wiki. 797 if ($subwiki->userid == $USER->id) { 798 // Only the owner of the wiki can view it 799 return has_capability('mod/wiki:viewpage', $context); 800 } else { // User has special capabilities 801 // User must have: 802 // mod/wiki:viewpage capability 803 // and 804 // mod/wiki:managewiki capability 805 $view = has_capability('mod/wiki:viewpage', $context); 806 $manage = has_capability('mod/wiki:managewiki', $context); 807 808 return $view && $manage; 809 } 810 } else { 811 //Error 812 return false; 813 } 814 case SEPARATEGROUPS: 815 // Collaborative and Individual Mode 816 // 817 // Collaborative Mode: 818 // There is one wiki per group. 819 // Individual Mode: 820 // Each person owns a wiki. 821 if ($wiki->wikimode == 'collaborative' || $wiki->wikimode == 'individual') { 822 // Only members of subwiki group could view that wiki 823 if (in_array($subwiki->groupid, $modinfo->get_groups($cm->groupingid))) { 824 // Only view capability needed 825 return has_capability('mod/wiki:viewpage', $context); 826 827 } else { // User is not part of that group 828 // User must have: 829 // mod/wiki:managewiki capability 830 // or 831 // moodle/site:accessallgroups capability 832 // and 833 // mod/wiki:viewpage capability 834 $view = has_capability('mod/wiki:viewpage', $context); 835 $manage = has_capability('mod/wiki:managewiki', $context); 836 $access = has_capability('moodle/site:accessallgroups', $context); 837 return ($manage || $access) && $view; 838 } 839 } else { 840 //Error 841 return false; 842 } 843 case VISIBLEGROUPS: 844 // Collaborative and Individual Mode 845 // 846 // Collaborative Mode: 847 // There is one wiki per group. 848 // Individual Mode: 849 // Each person owns a wiki. 850 if ($wiki->wikimode == 'collaborative' || $wiki->wikimode == 'individual') { 851 // Everybody can read all wikis 852 // 853 // Only view capability needed 854 return has_capability('mod/wiki:viewpage', $context); 855 } else { 856 //Error 857 return false; 858 } 859 default: // Error 860 return false; 861 } 862 } 863 864 /** 865 * Checks if current user can edit a subwiki 866 * 867 * @param $subwiki 868 */ 869 function wiki_user_can_edit($subwiki) { 870 global $USER; 871 872 $wiki = wiki_get_wiki($subwiki->wikiid); 873 $cm = get_coursemodule_from_instance('wiki', $wiki->id); 874 $context = context_module::instance($cm->id); 875 876 // Working depending on activity groupmode 877 switch (groups_get_activity_groupmode($cm)) { 878 case NOGROUPS: 879 880 if ($wiki->wikimode == 'collaborative') { 881 // Collaborative Mode: 882 // There is a wiki for all the class. 883 // 884 // Only edit capbility needed 885 return has_capability('mod/wiki:editpage', $context); 886 } else if ($wiki->wikimode == 'individual') { 887 // Individual Mode 888 // There is a wiki per user 889 890 // Only the owner of that wiki can edit it 891 if ($subwiki->userid == $USER->id) { 892 return has_capability('mod/wiki:editpage', $context); 893 } else { // Current user is not the owner of that wiki. 894 895 // User must have: 896 // mod/wiki:editpage capability 897 // and 898 // mod/wiki:managewiki capability 899 $edit = has_capability('mod/wiki:editpage', $context); 900 $manage = has_capability('mod/wiki:managewiki', $context); 901 902 return $edit && $manage; 903 } 904 } else { 905 //Error 906 return false; 907 } 908 case SEPARATEGROUPS: 909 if ($wiki->wikimode == 'collaborative') { 910 // Collaborative Mode: 911 // There is one wiki per group. 912 // 913 // Only members of subwiki group could edit that wiki 914 if (groups_is_member($subwiki->groupid)) { 915 // Only edit capability needed 916 return has_capability('mod/wiki:editpage', $context); 917 } else { // User is not part of that group 918 // User must have: 919 // mod/wiki:managewiki capability 920 // and 921 // moodle/site:accessallgroups capability 922 // and 923 // mod/wiki:editpage capability 924 $manage = has_capability('mod/wiki:managewiki', $context); 925 $access = has_capability('moodle/site:accessallgroups', $context); 926 $edit = has_capability('mod/wiki:editpage', $context); 927 return $manage && $access && $edit; 928 } 929 } else if ($wiki->wikimode == 'individual') { 930 // Individual Mode: 931 // Each person owns a wiki. 932 // 933 // Only the owner of that wiki can edit it 934 if ($subwiki->userid == $USER->id) { 935 return has_capability('mod/wiki:editpage', $context); 936 } else { // Current user is not the owner of that wiki. 937 // User must have: 938 // mod/wiki:managewiki capability 939 // and 940 // moodle/site:accessallgroups capability 941 // and 942 // mod/wiki:editpage capability 943 $manage = has_capability('mod/wiki:managewiki', $context); 944 $access = has_capability('moodle/site:accessallgroups', $context); 945 $edit = has_capability('mod/wiki:editpage', $context); 946 return $manage && $access && $edit; 947 } 948 } else { 949 //Error 950 return false; 951 } 952 case VISIBLEGROUPS: 953 if ($wiki->wikimode == 'collaborative') { 954 // Collaborative Mode: 955 // There is one wiki per group. 956 // 957 // Only members of subwiki group could edit that wiki 958 if (groups_is_member($subwiki->groupid)) { 959 // Only edit capability needed 960 return has_capability('mod/wiki:editpage', $context); 961 } else { // User is not part of that group 962 // User must have: 963 // mod/wiki:managewiki capability 964 // and 965 // mod/wiki:editpage capability 966 $manage = has_capability('mod/wiki:managewiki', $context); 967 $edit = has_capability('mod/wiki:editpage', $context); 968 return $manage && $edit; 969 } 970 } else if ($wiki->wikimode == 'individual') { 971 // Individual Mode: 972 // Each person owns a wiki. 973 // 974 // Only the owner of that wiki can edit it 975 if ($subwiki->userid == $USER->id) { 976 return has_capability('mod/wiki:editpage', $context); 977 } else { // Current user is not the owner of that wiki. 978 // User must have: 979 // mod/wiki:managewiki capability 980 // and 981 // mod/wiki:editpage capability 982 $manage = has_capability('mod/wiki:managewiki', $context); 983 $edit = has_capability('mod/wiki:editpage', $context); 984 return $manage && $edit; 985 } 986 } else { 987 //Error 988 return false; 989 } 990 default: // Error 991 return false; 992 } 993 } 994 995 //---------------- 996 // Locks 997 //---------------- 998 999 /** 1000 * Checks if a page-section is locked. 1001 * 1002 * @return true if the combination of section and page is locked, FALSE otherwise. 1003 */ 1004 function wiki_is_page_section_locked($pageid, $userid, $section = null) { 1005 global $DB; 1006 1007 $sql = "pageid = ? AND lockedat > ? AND userid != ?"; 1008 $params = array($pageid, time(), $userid); 1009 1010 if (!empty($section)) { 1011 $sql .= " AND (sectionname = ? OR sectionname IS null)"; 1012 $params[] = $section; 1013 } 1014 1015 return $DB->record_exists_select('wiki_locks', $sql, $params); 1016 } 1017 1018 /** 1019 * Inserts or updates a wiki_locks record. 1020 */ 1021 function wiki_set_lock($pageid, $userid, $section = null, $insert = false) { 1022 global $DB; 1023 1024 if (wiki_is_page_section_locked($pageid, $userid, $section)) { 1025 return false; 1026 } 1027 1028 $params = array('pageid' => $pageid, 'userid' => $userid, 'sectionname' => $section); 1029 1030 $lock = $DB->get_record('wiki_locks', $params); 1031 1032 if (!empty($lock)) { 1033 $DB->update_record('wiki_locks', array('id' => $lock->id, 'lockedat' => time() + LOCK_TIMEOUT)); 1034 } else if ($insert) { 1035 $DB->insert_record('wiki_locks', 1036 array('pageid' => $pageid, 'sectionname' => $section, 'userid' => $userid, 'lockedat' => time() + LOCK_TIMEOUT)); 1037 } 1038 1039 return true; 1040 } 1041 1042 /** 1043 * Deletes wiki_locks that are not in use. (F.Ex. after submitting the changes). If no userid is present, it deletes ALL the wiki_locks of a specific page. 1044 * 1045 * @param int $pageid page id. 1046 * @param int $userid id of user for which lock is deleted. 1047 * @param string $section section to be deleted. 1048 * @param bool $delete_from_db deleted from db. 1049 * @param bool $delete_section_and_page delete section and page version. 1050 */ 1051 function wiki_delete_locks($pageid, $userid = null, $section = null, $delete_from_db = true, $delete_section_and_page = false) { 1052 global $DB; 1053 1054 $wiki = wiki_get_wiki_from_pageid($pageid); 1055 $cm = get_coursemodule_from_instance('wiki', $wiki->id); 1056 $context = context_module::instance($cm->id); 1057 1058 $params = array('pageid' => $pageid); 1059 1060 if (!empty($userid)) { 1061 $params['userid'] = $userid; 1062 } 1063 1064 if (!empty($section)) { 1065 $params['sectionname'] = $section; 1066 } 1067 1068 if ($delete_from_db) { 1069 $DB->delete_records('wiki_locks', $params); 1070 if ($delete_section_and_page && !empty($section)) { 1071 $params['sectionname'] = null; 1072 $DB->delete_records('wiki_locks', $params); 1073 } 1074 $event = \mod_wiki\event\page_locks_deleted::create( 1075 array( 1076 'context' => $context, 1077 'objectid' => $pageid, 1078 'relateduserid' => $userid, 1079 'other' => array( 1080 'section' => $section 1081 ) 1082 )); 1083 // No need to add snapshot, as important data is section, userid and pageid, which is part of event. 1084 $event->trigger(); 1085 } else { 1086 $DB->set_field('wiki_locks', 'lockedat', time(), $params); 1087 } 1088 } 1089 1090 /** 1091 * Deletes wiki_locks that expired 1 hour ago. 1092 */ 1093 function wiki_delete_old_locks() { 1094 global $DB; 1095 1096 $DB->delete_records_select('wiki_locks', "lockedat < ?", array(time() - 3600)); 1097 } 1098 1099 /** 1100 * Deletes wiki_links. It can be sepecific link or links attached in subwiki 1101 * 1102 * @global mixed $DB database object 1103 * @param int $linkid id of the link to be deleted 1104 * @param int $topageid links to the specific page 1105 * @param int $frompageid links from specific page 1106 * @param int $subwikiid links to subwiki 1107 */ 1108 function wiki_delete_links($linkid = null, $topageid = null, $frompageid = null, $subwikiid = null) { 1109 global $DB; 1110 $params = array(); 1111 1112 // if link id is givien then don't check for anything else 1113 if (!empty($linkid)) { 1114 $params['id'] = $linkid; 1115 } else { 1116 if (!empty($topageid)) { 1117 $params['topageid'] = $topageid; 1118 } 1119 if (!empty($frompageid)) { 1120 $params['frompageid'] = $frompageid; 1121 } 1122 if (!empty($subwikiid)) { 1123 $params['subwikiid'] = $subwikiid; 1124 } 1125 } 1126 1127 //Delete links if any params are passed, else nothing to delete. 1128 if (!empty($params)) { 1129 $DB->delete_records('wiki_links', $params); 1130 } 1131 } 1132 1133 /** 1134 * Delete wiki synonyms related to subwikiid or page 1135 * 1136 * @param int $subwikiid id of sunbwiki 1137 * @param int $pageid id of page 1138 */ 1139 function wiki_delete_synonym($subwikiid, $pageid = null) { 1140 global $DB; 1141 1142 $params = array('subwikiid' => $subwikiid); 1143 if (!is_null($pageid)) { 1144 $params['pageid'] = $pageid; 1145 } 1146 $DB->delete_records('wiki_synonyms', $params, IGNORE_MISSING); 1147 } 1148 1149 /** 1150 * Delete pages and all related data 1151 * 1152 * @param mixed $context context in which page needs to be deleted. 1153 * @param mixed $pageids id's of pages to be deleted 1154 * @param int $subwikiid id of the subwiki for which all pages should be deleted 1155 */ 1156 function wiki_delete_pages($context, $pageids = null, $subwikiid = null) { 1157 global $DB, $CFG; 1158 1159 if (!empty($pageids) && is_int($pageids)) { 1160 $pageids = array($pageids); 1161 } else if (!empty($subwikiid)) { 1162 $pageids = wiki_get_page_list($subwikiid); 1163 } 1164 1165 //If there is no pageid then return as we can't delete anything. 1166 if (empty($pageids)) { 1167 return; 1168 } 1169 1170 /// Delete page and all it's relevent data 1171 foreach ($pageids as $pageid) { 1172 if (is_object($pageid)) { 1173 $pageid = $pageid->id; 1174 } 1175 1176 //Delete page comments 1177 $comments = wiki_get_comments($context->id, $pageid); 1178 foreach ($comments as $commentid => $commentvalue) { 1179 wiki_delete_comment($commentid, $context, $pageid); 1180 } 1181 1182 //Delete page tags 1183 core_tag_tag::remove_all_item_tags('mod_wiki', 'wiki_pages', $pageid); 1184 1185 //Delete Synonym 1186 wiki_delete_synonym($subwikiid, $pageid); 1187 1188 //Delete all page versions 1189 wiki_delete_page_versions(array($pageid=>array(0)), $context); 1190 1191 //Delete all page locks 1192 wiki_delete_locks($pageid); 1193 1194 //Delete all page links 1195 wiki_delete_links(null, $pageid); 1196 1197 $params = array('id' => $pageid); 1198 1199 // Get page before deleting. 1200 $page = $DB->get_record('wiki_pages', $params); 1201 1202 //Delete page 1203 $DB->delete_records('wiki_pages', $params); 1204 1205 // Trigger page_deleted event. 1206 $event = \mod_wiki\event\page_deleted::create( 1207 array( 1208 'context' => $context, 1209 'objectid' => $pageid, 1210 'other' => array('subwikiid' => $subwikiid) 1211 )); 1212 $event->add_record_snapshot('wiki_pages', $page); 1213 $event->trigger(); 1214 } 1215 } 1216 1217 /** 1218 * Delete specificed versions of a page or versions created by users 1219 * if version is 0 then it will remove all versions of the page 1220 * 1221 * @param array $deleteversions delete versions for a page 1222 * @param context_module $context module context 1223 */ 1224 function wiki_delete_page_versions($deleteversions, $context = null) { 1225 global $DB; 1226 1227 /// delete page-versions 1228 foreach ($deleteversions as $id => $versions) { 1229 $params = array('pageid' => $id); 1230 if (is_null($context)) { 1231 $wiki = wiki_get_wiki_from_pageid($id); 1232 $cm = get_coursemodule_from_instance('wiki', $wiki->id); 1233 $context = context_module::instance($cm->id); 1234 } 1235 // Delete all versions, if version specified is 0. 1236 if (in_array(0, $versions)) { 1237 $oldversions = $DB->get_records('wiki_versions', $params); 1238 $DB->delete_records('wiki_versions', $params, IGNORE_MISSING); 1239 } else { 1240 list($insql, $param) = $DB->get_in_or_equal($versions); 1241 $insql .= ' AND pageid = ?'; 1242 array_push($param, $params['pageid']); 1243 $oldversions = $DB->get_records_select('wiki_versions', 'version ' . $insql, $param); 1244 $DB->delete_records_select('wiki_versions', 'version ' . $insql, $param); 1245 } 1246 foreach ($oldversions as $version) { 1247 // Trigger page version deleted event. 1248 $event = \mod_wiki\event\page_version_deleted::create( 1249 array( 1250 'context' => $context, 1251 'objectid' => $version->id, 1252 'other' => array( 1253 'pageid' => $id 1254 ) 1255 )); 1256 $event->add_record_snapshot('wiki_versions', $version); 1257 $event->trigger(); 1258 } 1259 } 1260 } 1261 1262 function wiki_get_comment($commentid){ 1263 global $DB; 1264 return $DB->get_record('comments', array('id' => $commentid)); 1265 } 1266 1267 /** 1268 * Returns all comments by context and pageid 1269 * 1270 * @param int $contextid Current context id 1271 * @param int $pageid Current pageid 1272 **/ 1273 function wiki_get_comments($contextid, $pageid) { 1274 global $DB; 1275 1276 return $DB->get_records('comments', array('contextid' => $contextid, 'itemid' => $pageid, 'commentarea' => 'wiki_page'), 'timecreated ASC'); 1277 } 1278 1279 /** 1280 * Add comments ro database 1281 * 1282 * @param object $context. Current context 1283 * @param int $pageid. Current pageid 1284 * @param string $content. Content of the comment 1285 * @param string editor. Version of editor we are using. 1286 **/ 1287 function wiki_add_comment($context, $pageid, $content, $editor) { 1288 global $CFG; 1289 require_once($CFG->dirroot . '/comment/lib.php'); 1290 1291 list($context, $course, $cm) = get_context_info_array($context->id); 1292 $cmt = new stdclass(); 1293 $cmt->context = $context; 1294 $cmt->itemid = $pageid; 1295 $cmt->area = 'wiki_page'; 1296 $cmt->course = $course; 1297 $cmt->component = 'mod_wiki'; 1298 1299 $manager = new comment($cmt); 1300 1301 if ($editor == 'creole') { 1302 $manager->add($content, FORMAT_CREOLE); 1303 } else if ($editor == 'html') { 1304 $manager->add($content, FORMAT_HTML); 1305 } else if ($editor == 'nwiki') { 1306 $manager->add($content, FORMAT_NWIKI); 1307 } 1308 1309 } 1310 1311 /** 1312 * Delete comments from database 1313 * 1314 * @param $idcomment. Id of comment which will be deleted 1315 * @param $context. Current context 1316 * @param $pageid. Current pageid 1317 **/ 1318 function wiki_delete_comment($idcomment, $context, $pageid) { 1319 global $CFG; 1320 require_once($CFG->dirroot . '/comment/lib.php'); 1321 1322 list($context, $course, $cm) = get_context_info_array($context->id); 1323 $cmt = new stdClass(); 1324 $cmt->context = $context; 1325 $cmt->itemid = $pageid; 1326 $cmt->area = 'wiki_page'; 1327 $cmt->course = $course; 1328 $cmt->component = 'mod_wiki'; 1329 1330 $manager = new comment($cmt); 1331 $manager->delete($idcomment); 1332 1333 } 1334 1335 /** 1336 * Delete al comments from wiki 1337 * 1338 **/ 1339 function wiki_delete_comments_wiki() { 1340 global $PAGE, $DB; 1341 1342 $cm = $PAGE->cm; 1343 $context = context_module::instance($cm->id); 1344 1345 $table = 'comments'; 1346 $select = 'contextid = ?'; 1347 1348 $DB->delete_records_select($table, $select, array($context->id)); 1349 1350 } 1351 1352 function wiki_add_progress($pageid, $oldversionid, $versionid, $progress) { 1353 global $DB; 1354 for ($v = $oldversionid + 1; $v <= $versionid; $v++) { 1355 $user = wiki_get_wiki_page_id($pageid, $v); 1356 1357 $DB->insert_record('wiki_progress', array('userid' => $user->userid, 'pageid' => $pageid, 'versionid' => $v, 'progress' => $progress)); 1358 } 1359 } 1360 1361 function wiki_get_wiki_page_id($pageid, $id) { 1362 global $DB; 1363 return $DB->get_record('wiki_versions', array('pageid' => $pageid, 'id' => $id)); 1364 } 1365 1366 function wiki_print_page_content($page, $context, $subwikiid) { 1367 global $OUTPUT, $CFG; 1368 1369 if ($page->timerendered + WIKI_REFRESH_CACHE_TIME < time()) { 1370 $content = wiki_refresh_cachedcontent($page); 1371 $page = $content['page']; 1372 } 1373 1374 if (isset($content)) { 1375 $box = ''; 1376 foreach ($content['sections'] as $s) { 1377 $box .= '<p>' . get_string('repeatedsection', 'wiki', $s) . '</p>'; 1378 } 1379 1380 if (!empty($box)) { 1381 echo $OUTPUT->box($box); 1382 } 1383 } 1384 $html = file_rewrite_pluginfile_urls($page->cachedcontent, 'pluginfile.php', $context->id, 'mod_wiki', 'attachments', $subwikiid); 1385 $html = format_text($html, FORMAT_HTML, array('overflowdiv' => true, 'allowid' => true)); 1386 echo $OUTPUT->box($html); 1387 1388 echo $OUTPUT->tag_list(core_tag_tag::get_item_tags('mod_wiki', 'wiki_pages', $page->id), 1389 null, 'wiki-tags'); 1390 1391 wiki_increment_pageviews($page); 1392 } 1393 1394 /** 1395 * This function trims any given text and returns it with some dots at the end 1396 * 1397 * @param string $text 1398 * @param string $limit 1399 * 1400 * @return string 1401 */ 1402 function wiki_trim_string($text, $limit = 25) { 1403 1404 if (core_text::strlen($text) > $limit) { 1405 $text = core_text::substr($text, 0, $limit) . '...'; 1406 } 1407 1408 return $text; 1409 } 1410 1411 /** 1412 * Prints default edit form fields and buttons 1413 * 1414 * @param string $format Edit form format (html, creole...) 1415 * @param integer $version Version number. A negative number means no versioning. 1416 */ 1417 1418 function wiki_print_edit_form_default_fields($format, $pageid, $version = -1, $upload = false, $deleteuploads = array()) { 1419 global $CFG, $PAGE, $OUTPUT; 1420 1421 echo '<input type="hidden" name="sesskey" value="' . sesskey() . '" />'; 1422 1423 if ($version >= 0) { 1424 echo '<input type="hidden" name="version" value="' . $version . '" />'; 1425 } 1426 1427 echo '<input type="hidden" name="format" value="' . $format . '"/>'; 1428 1429 //attachments 1430 require_once($CFG->dirroot . '/lib/form/filemanager.php'); 1431 1432 $filemanager = new MoodleQuickForm_filemanager('attachments', get_string('wikiattachments', 'wiki'), array('id' => 'attachments'), array('subdirs' => false, 'maxfiles' => 99, 'maxbytes' => $CFG->maxbytes)); 1433 1434 $value = file_get_submitted_draft_itemid('attachments'); 1435 if (!empty($value) && !$upload) { 1436 $filemanager->setValue($value); 1437 } 1438 1439 echo "<fieldset class=\"wiki-upload-section clearfix\"><legend class=\"ftoggler\">" . get_string("uploadtitle", 'wiki') . "</legend>"; 1440 1441 echo $OUTPUT->container_start('container'); 1442 print $filemanager->toHtml(); 1443 echo $OUTPUT->container_end(); 1444 1445 $cm = $PAGE->cm; 1446 $context = context_module::instance($cm->id); 1447 1448 echo $OUTPUT->container_start('container wiki-upload-table'); 1449 wiki_print_upload_table($context, 'wiki_upload', $pageid, $deleteuploads); 1450 echo $OUTPUT->container_end(); 1451 1452 echo "</fieldset>"; 1453 1454 echo '<input class="wiki_button btn btn-secondary" type="submit" name="editoption" value="' 1455 . get_string('save', 'wiki') . '" />'; 1456 echo '<input class="wiki_button btn btn-secondary" type="submit" name="editoption" value="' 1457 . get_string('upload', 'wiki') . '" />'; 1458 echo '<input class="wiki_button btn btn-secondary" type="submit" name="editoption" value="' . get_string('preview') . '" />'; 1459 echo '<input class="wiki_button btn btn-secondary" type="submit" name="editoption" value="' . get_string('cancel') . '" />'; 1460 } 1461 1462 /** 1463 * Prints a table with the files attached to a wiki page 1464 * @param object $context 1465 * @param string $filearea 1466 * @param int $fileitemid 1467 * @param array deleteuploads 1468 */ 1469 function wiki_print_upload_table($context, $filearea, $fileitemid, $deleteuploads = array()) { 1470 global $CFG, $OUTPUT; 1471 1472 $htmltable = new html_table(); 1473 1474 $htmltable->head = array(get_string('deleteupload', 'wiki'), get_string('uploadname', 'wiki'), get_string('uploadactions', 'wiki')); 1475 1476 $fs = get_file_storage(); 1477 $files = $fs->get_area_files($context->id, 'mod_wiki', $filearea, $fileitemid); //TODO: this is weird (skodak) 1478 1479 foreach ($files as $file) { 1480 if (!$file->is_directory()) { 1481 $checkbox = '<input type="checkbox" name="deleteupload[]", value="' . $file->get_pathnamehash() . '"'; 1482 1483 if (in_array($file->get_pathnamehash(), $deleteuploads)) { 1484 $checkbox .= ' checked="checked"'; 1485 } 1486 1487 $checkbox .= " />"; 1488 1489 $htmltable->data[] = array($checkbox, '<a href="' . file_encode_url($CFG->wwwroot . '/pluginfile.php', '/' . $context->id . '/wiki_upload/' . $fileitemid . '/' . $file->get_filename()) . '">' . $file->get_filename() . '</a>', ""); 1490 } 1491 } 1492 1493 print '<h3 class="upload-table-title">' . get_string('uploadfiletitle', 'wiki') . "</h3>"; 1494 print html_writer::table($htmltable); 1495 } 1496 1497 /** 1498 * Generate wiki's page tree 1499 * 1500 * @param page_wiki $page. A wiki page object 1501 * @param navigation_node $node. Starting navigation_node 1502 * @param array $keys. An array to store keys 1503 * @return an array with all tree nodes 1504 */ 1505 function wiki_build_tree($page, $node, &$keys) { 1506 $content = array(); 1507 static $icon = null; 1508 if ($icon === null) { 1509 // Substitute the default navigation icon with empty image. 1510 $icon = new pix_icon('spacer', ''); 1511 } 1512 $pages = wiki_get_linked_pages($page->id); 1513 foreach ($pages as $p) { 1514 $key = $page->id . ':' . $p->id; 1515 if (in_array($key, $keys)) { 1516 break; 1517 } 1518 array_push($keys, $key); 1519 $l = wiki_parser_link($p); 1520 $link = new moodle_url('/mod/wiki/view.php', array('pageid' => $p->id)); 1521 // navigation_node::get_content will format the title for us 1522 $nodeaux = $node->add($p->title, $link, null, null, null, $icon); 1523 if ($l['new']) { 1524 $nodeaux->add_class('wiki_newentry'); 1525 } 1526 wiki_build_tree($p, $nodeaux, $keys); 1527 } 1528 $content[] = $node; 1529 return $content; 1530 } 1531 1532 /** 1533 * Get linked pages from page 1534 * @param int $pageid 1535 */ 1536 function wiki_get_linked_pages($pageid) { 1537 global $DB; 1538 1539 $sql = "SELECT p.id, p.title 1540 FROM {wiki_pages} p 1541 JOIN {wiki_links} l ON l.topageid = p.id 1542 WHERE l.frompageid = ? 1543 ORDER BY p.title ASC"; 1544 return $DB->get_records_sql($sql, array($pageid)); 1545 } 1546 1547 /** 1548 * Get updated pages from wiki 1549 * @param int $pageid 1550 */ 1551 function wiki_get_updated_pages_by_subwiki($swid) { 1552 global $DB, $USER; 1553 1554 $sql = "SELECT * 1555 FROM {wiki_pages} 1556 WHERE subwikiid = ? AND timemodified > ? 1557 ORDER BY timemodified DESC"; 1558 return $DB->get_records_sql($sql, array($swid, $USER->lastlogin)); 1559 } 1560 1561 /** 1562 * Check if the user can create pages in a certain wiki. 1563 * @param context $context Wiki's context. 1564 * @param integer|stdClass $user A user id or object. By default (null) checks the permissions of the current user. 1565 * @return bool True if user can create pages, false otherwise. 1566 * @since Moodle 3.1 1567 */ 1568 function wiki_can_create_pages($context, $user = null) { 1569 return has_capability('mod/wiki:createpage', $context, $user); 1570 } 1571 1572 /** 1573 * Get a sub wiki instance by wiki id, group id and user id. 1574 * If the wiki doesn't exist in DB it will return an isntance with id -1. 1575 * 1576 * @param int $wikiid Wiki ID. 1577 * @param int $groupid Group ID. 1578 * @param int $userid User ID. 1579 * @return object Subwiki instance. 1580 * @since Moodle 3.1 1581 */ 1582 function wiki_get_possible_subwiki_by_group($wikiid, $groupid, $userid = 0) { 1583 if (!$subwiki = wiki_get_subwiki_by_group($wikiid, $groupid, $userid)) { 1584 $subwiki = new stdClass(); 1585 $subwiki->id = -1; 1586 $subwiki->wikiid = $wikiid; 1587 $subwiki->groupid = $groupid; 1588 $subwiki->userid = $userid; 1589 } 1590 return $subwiki; 1591 } 1592 1593 /** 1594 * Get all the possible subwikis visible to the user in a wiki. 1595 * It will return all the subwikis that can be created in a wiki, even if they don't exist in DB yet. 1596 * 1597 * @param stdClass $wiki Wiki to get the subwikis from. 1598 * @param cm_info|stdClass $cm Optional. The course module object. 1599 * @param context_module $context Optional. Context of wiki module. 1600 * @return array List of subwikis. 1601 * @since Moodle 3.1 1602 */ 1603 function wiki_get_visible_subwikis($wiki, $cm = null, $context = null) { 1604 global $USER; 1605 1606 $subwikis = array(); 1607 1608 if (empty($wiki) or !is_object($wiki)) { 1609 // Wiki not valid. 1610 return $subwikis; 1611 } 1612 1613 if (empty($cm)) { 1614 $cm = get_coursemodule_from_instance('wiki', $wiki->id); 1615 } 1616 if (empty($context)) { 1617 $context = context_module::instance($cm->id); 1618 } 1619 1620 if (!has_capability('mod/wiki:viewpage', $context)) { 1621 return $subwikis; 1622 } 1623 1624 $manage = has_capability('mod/wiki:managewiki', $context); 1625 1626 if (!$groupmode = groups_get_activity_groupmode($cm)) { 1627 // No groups. 1628 if ($wiki->wikimode == 'collaborative') { 1629 // Only 1 subwiki. 1630 $subwikis[] = wiki_get_possible_subwiki_by_group($wiki->id, 0, 0); 1631 } else if ($wiki->wikimode == 'individual') { 1632 // There's 1 subwiki per user. 1633 if ($manage) { 1634 // User can view all subwikis. 1635 $users = get_enrolled_users($context); 1636 foreach ($users as $user) { 1637 $subwikis[] = wiki_get_possible_subwiki_by_group($wiki->id, 0, $user->id); 1638 } 1639 } else { 1640 // User can only see his subwiki. 1641 $subwikis[] = wiki_get_possible_subwiki_by_group($wiki->id, 0, $USER->id); 1642 } 1643 } 1644 } else { 1645 if ($wiki->wikimode == 'collaborative') { 1646 // 1 subwiki per group. 1647 $aag = has_capability('moodle/site:accessallgroups', $context); 1648 if ($aag || $groupmode == VISIBLEGROUPS) { 1649 // User can see all groups. 1650 $allowedgroups = groups_get_all_groups($cm->course, 0, $cm->groupingid); 1651 $allparticipants = new stdClass(); 1652 $allparticipants->id = 0; 1653 array_unshift($allowedgroups, $allparticipants); // Add all participants. 1654 } else { 1655 // User can only see the groups he belongs to. 1656 $allowedgroups = groups_get_all_groups($cm->course, $USER->id, $cm->groupingid); 1657 } 1658 1659 foreach ($allowedgroups as $group) { 1660 $subwikis[] = wiki_get_possible_subwiki_by_group($wiki->id, $group->id, 0); 1661 } 1662 } else if ($wiki->wikimode == 'individual') { 1663 // 1 subwiki per user and group. 1664 1665 if ($manage || $groupmode == VISIBLEGROUPS) { 1666 // User can view all subwikis. 1667 $users = get_enrolled_users($context); 1668 foreach ($users as $user) { 1669 // Get all the groups this user belongs to. 1670 $groups = groups_get_all_groups($cm->course, $user->id); 1671 if (!empty($groups)) { 1672 foreach ($groups as $group) { 1673 $subwikis[] = wiki_get_possible_subwiki_by_group($wiki->id, $group->id, $user->id); 1674 } 1675 } else { 1676 // User doesn't belong to any group, add it to group 0. 1677 $subwikis[] = wiki_get_possible_subwiki_by_group($wiki->id, 0, $user->id); 1678 } 1679 } 1680 } else { 1681 // The user can only see the subwikis of the groups he belongs. 1682 $allowedgroups = groups_get_all_groups($cm->course, $USER->id, $cm->groupingid); 1683 foreach ($allowedgroups as $group) { 1684 $users = groups_get_members($group->id); 1685 foreach ($users as $user) { 1686 $subwikis[] = wiki_get_possible_subwiki_by_group($wiki->id, $group->id, $user->id); 1687 } 1688 } 1689 } 1690 } 1691 } 1692 1693 return $subwikis; 1694 } 1695 1696 /** 1697 * Utility function for getting a subwiki by group and user, validating that the user can view it. 1698 * If the subwiki doesn't exists in DB yet it'll have id -1. 1699 * 1700 * @param stdClass $wiki The wiki. 1701 * @param int $groupid Group ID. 0 means the subwiki doesn't use groups. 1702 * @param int $userid User ID. 0 means the subwiki doesn't use users. 1703 * @return stdClass Subwiki. If it doesn't exists in DB yet it'll have id -1. If the user can't view the 1704 * subwiki this function will return false. 1705 * @since Moodle 3.1 1706 * @throws moodle_exception 1707 */ 1708 function wiki_get_subwiki_by_group_and_user_with_validation($wiki, $groupid, $userid) { 1709 global $USER, $DB; 1710 1711 // Get subwiki based on group and user. 1712 if (!$subwiki = wiki_get_subwiki_by_group($wiki->id, $groupid, $userid)) { 1713 1714 // The subwiki doesn't exist. 1715 // Validate if user is valid. 1716 if ($userid != 0) { 1717 $user = core_user::get_user($userid, '*', MUST_EXIST); 1718 core_user::require_active_user($user); 1719 } 1720 1721 // Validate that groupid is valid. 1722 if ($groupid != 0 && !groups_group_exists($groupid)) { 1723 throw new moodle_exception('cannotfindgroup', 'error'); 1724 } 1725 1726 // Valid data but subwiki not found. We'll simulate a subwiki object to check if the user would be able to see it 1727 // if it existed. If he's able to see it then we'll return an empty array because the subwiki has no pages. 1728 $subwiki = new stdClass(); 1729 $subwiki->id = -1; 1730 $subwiki->wikiid = $wiki->id; 1731 $subwiki->userid = $userid; 1732 $subwiki->groupid = $groupid; 1733 } 1734 1735 // Check that the user can view the subwiki. This function checks capabilities. 1736 if (!wiki_user_can_view($subwiki, $wiki)) { 1737 return false; 1738 } 1739 1740 return $subwiki; 1741 } 1742 1743 /** 1744 * Returns wiki pages tagged with a specified tag. 1745 * 1746 * This is a callback used by the tag area mod_wiki/wiki_pages to search for wiki pages 1747 * tagged with a specific tag. 1748 * 1749 * @param core_tag_tag $tag 1750 * @param bool $exclusivemode if set to true it means that no other entities tagged with this tag 1751 * are displayed on the page and the per-page limit may be bigger 1752 * @param int $fromctx context id where the link was displayed, may be used by callbacks 1753 * to display items in the same context first 1754 * @param int $ctx context id where to search for records 1755 * @param bool $rec search in subcontexts as well 1756 * @param int $page 0-based number of page being displayed 1757 * @return \core_tag\output\tagindex 1758 */ 1759 function mod_wiki_get_tagged_pages($tag, $exclusivemode = false, $fromctx = 0, $ctx = 0, $rec = 1, $page = 0) { 1760 global $OUTPUT; 1761 $perpage = $exclusivemode ? 20 : 5; 1762 1763 // Build the SQL query. 1764 $ctxselect = context_helper::get_preload_record_columns_sql('ctx'); 1765 $query = "SELECT wp.id, wp.title, ws.userid, ws.wikiid, ws.id AS subwikiid, ws.groupid, w.wikimode, 1766 cm.id AS cmid, c.id AS courseid, c.shortname, c.fullname, $ctxselect 1767 FROM {wiki_pages} wp 1768 JOIN {wiki_subwikis} ws ON wp.subwikiid = ws.id 1769 JOIN {wiki} w ON w.id = ws.wikiid 1770 JOIN {modules} m ON m.name='wiki' 1771 JOIN {course_modules} cm ON cm.module = m.id AND cm.instance = w.id 1772 JOIN {tag_instance} tt ON wp.id = tt.itemid 1773 JOIN {course} c ON cm.course = c.id 1774 JOIN {context} ctx ON ctx.instanceid = cm.id AND ctx.contextlevel = :coursemodulecontextlevel 1775 WHERE tt.itemtype = :itemtype AND tt.tagid = :tagid AND tt.component = :component 1776 AND cm.deletioninprogress = 0 1777 AND wp.id %ITEMFILTER% AND c.id %COURSEFILTER%"; 1778 1779 $params = array('itemtype' => 'wiki_pages', 'tagid' => $tag->id, 'component' => 'mod_wiki', 1780 'coursemodulecontextlevel' => CONTEXT_MODULE); 1781 1782 if ($ctx) { 1783 $context = $ctx ? context::instance_by_id($ctx) : context_system::instance(); 1784 $query .= $rec ? ' AND (ctx.id = :contextid OR ctx.path LIKE :path)' : ' AND ctx.id = :contextid'; 1785 $params['contextid'] = $context->id; 1786 $params['path'] = $context->path.'/%'; 1787 } 1788 1789 $query .= " ORDER BY "; 1790 if ($fromctx) { 1791 // In order-clause specify that modules from inside "fromctx" context should be returned first. 1792 $fromcontext = context::instance_by_id($fromctx); 1793 $query .= ' (CASE WHEN ctx.id = :fromcontextid OR ctx.path LIKE :frompath THEN 0 ELSE 1 END),'; 1794 $params['fromcontextid'] = $fromcontext->id; 1795 $params['frompath'] = $fromcontext->path.'/%'; 1796 } 1797 $query .= ' c.sortorder, cm.id, wp.id'; 1798 1799 $totalpages = $page + 1; 1800 1801 // Use core_tag_index_builder to build and filter the list of items. 1802 $builder = new core_tag_index_builder('mod_wiki', 'wiki_pages', $query, $params, $page * $perpage, $perpage + 1); 1803 while ($item = $builder->has_item_that_needs_access_check()) { 1804 context_helper::preload_from_record($item); 1805 $courseid = $item->courseid; 1806 if (!$builder->can_access_course($courseid)) { 1807 $builder->set_accessible($item, false); 1808 continue; 1809 } 1810 $modinfo = get_fast_modinfo($builder->get_course($courseid)); 1811 // Set accessibility of this item and all other items in the same course. 1812 $builder->walk(function ($taggeditem) use ($courseid, $modinfo, $builder) { 1813 if ($taggeditem->courseid == $courseid) { 1814 $accessible = false; 1815 if (($cm = $modinfo->get_cm($taggeditem->cmid)) && $cm->uservisible) { 1816 $subwiki = (object)array('id' => $taggeditem->subwikiid, 'groupid' => $taggeditem->groupid, 1817 'userid' => $taggeditem->userid, 'wikiid' => $taggeditem->wikiid); 1818 $wiki = (object)array('id' => $taggeditem->wikiid, 'wikimode' => $taggeditem->wikimode, 1819 'course' => $cm->course); 1820 $accessible = wiki_user_can_view($subwiki, $wiki); 1821 } 1822 $builder->set_accessible($taggeditem, $accessible); 1823 } 1824 }); 1825 } 1826 1827 $items = $builder->get_items(); 1828 if (count($items) > $perpage) { 1829 $totalpages = $page + 2; // We don't need exact page count, just indicate that the next page exists. 1830 array_pop($items); 1831 } 1832 1833 // Build the display contents. 1834 if ($items) { 1835 $tagfeed = new core_tag\output\tagfeed(); 1836 foreach ($items as $item) { 1837 context_helper::preload_from_record($item); 1838 $modinfo = get_fast_modinfo($item->courseid); 1839 $cm = $modinfo->get_cm($item->cmid); 1840 $pageurl = new moodle_url('/mod/wiki/view.php', array('pageid' => $item->id)); 1841 $pagename = format_string($item->title, true, array('context' => context_module::instance($item->cmid))); 1842 $pagename = html_writer::link($pageurl, $pagename); 1843 $courseurl = course_get_url($item->courseid, $cm->sectionnum); 1844 $cmname = html_writer::link($cm->url, $cm->get_formatted_name()); 1845 $coursename = format_string($item->fullname, true, array('context' => context_course::instance($item->courseid))); 1846 $coursename = html_writer::link($courseurl, $coursename); 1847 $icon = html_writer::link($pageurl, html_writer::empty_tag('img', array('src' => $cm->get_icon_url()))); 1848 $tagfeed->add($icon, $pagename, $cmname.'<br>'.$coursename); 1849 } 1850 1851 $content = $OUTPUT->render_from_template('core_tag/tagfeed', 1852 $tagfeed->export_for_template($OUTPUT)); 1853 1854 return new core_tag\output\tagindex($tag, 'mod_wiki', 'wiki_pages', $content, 1855 $exclusivemode, $fromctx, $ctx, $rec, $page, $totalpages); 1856 } 1857 }
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