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Developer Documentation
- Bug fixes for general core bugs in 4.2.x will end 22 April 2024 (12 months).
- Bug fixes for security issues in 4.2.x will end 7 October 2024 (18 months).
- PHP version: minimum PHP 8.0.0 Note: minimum PHP version has increased since Moodle 4.1. PHP 8.1.x is supported too.
/mod/wiki/ -> locallib.php (source)
Differences Between: [Versions 310 and 402] [Versions 311 and 402] [Versions 39 and 402] [Versions 400 and 402] [Versions 401 and 402]
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 $sort How to sort the pages. By default, title ASC. 512 * @return stdClass[] 513 */ 514 function wiki_get_page_list($swid, $sort = 'title ASC') { 515 global $DB; 516 $records = $DB->get_records('wiki_pages', array('subwikiid' => $swid), $sort); 517 return $records; 518 } 519 520 /** 521 * Return a list of orphaned wikis for one specific subwiki 522 * @global object 523 * @param int $swid sub wiki id 524 */ 525 function wiki_get_orphaned_pages($swid) { 526 global $DB; 527 528 $sql = "SELECT p.id, p.title 529 FROM {wiki_pages} p, {wiki} w , {wiki_subwikis} s 530 WHERE p.subwikiid = ? 531 AND s.id = ? 532 AND w.id = s.wikiid 533 AND p.title != w.firstpagetitle 534 AND p.id NOT IN (SELECT topageid FROM {wiki_links} WHERE subwikiid = ?)"; 535 536 return $DB->get_records_sql($sql, array($swid, $swid, $swid)); 537 } 538 539 /** 540 * Search wiki title 541 * @param int $swid sub wiki id 542 * @param string $search 543 */ 544 function wiki_search_title($swid, $search) { 545 global $DB; 546 547 return $DB->get_records_select('wiki_pages', "subwikiid = ? AND title LIKE ?", array($swid, '%'.$search.'%')); 548 } 549 550 /** 551 * Search wiki content 552 * @param int $swid sub wiki id 553 * @param string $search 554 */ 555 function wiki_search_content($swid, $search) { 556 global $DB; 557 558 return $DB->get_records_select('wiki_pages', "subwikiid = ? AND cachedcontent LIKE ?", array($swid, '%'.$search.'%')); 559 } 560 561 /** 562 * Search wiki title and content 563 * @param int $swid sub wiki id 564 * @param string $search 565 */ 566 function wiki_search_all($swid, $search) { 567 global $DB; 568 569 return $DB->get_records_select('wiki_pages', "subwikiid = ? AND (cachedcontent LIKE ? OR title LIKE ?)", array($swid, '%'.$search.'%', '%'.$search.'%')); 570 } 571 572 /** 573 * Get user data 574 */ 575 function wiki_get_user_info($userid) { 576 global $DB; 577 return $DB->get_record('user', array('id' => $userid)); 578 } 579 580 /** 581 * Increase page view nubmer 582 * @param int $page, database record 583 */ 584 function wiki_increment_pageviews($page) { 585 global $DB; 586 587 $page->pageviews++; 588 $DB->update_record('wiki_pages', $page); 589 } 590 591 //---------------------------------------------------------- 592 //---------------------------------------------------------- 593 594 /** 595 * Text format supported by wiki module 596 */ 597 function wiki_get_formats() { 598 return array('html', 'creole', 'nwiki'); 599 } 600 601 /** 602 * Parses a string with the wiki markup language in $markup. 603 * 604 * @return Array or false when something wrong has happened. 605 * 606 * Returned array contains the following fields: 607 * 'parsed_text' => String. Contains the parsed wiki content. 608 * 'unparsed_text' => String. Constains the original wiki content. 609 * 'link_count' => Array of array('destination' => ..., 'new' => "is new?"). Contains the internal wiki links found in the wiki content. 610 * 'deleted_sections' => the list of deleted sections. 611 * '' => 612 * 613 * @author Josep Arús Pous 614 **/ 615 function wiki_parse_content($markup, $pagecontent, $options = array()) { 616 global $PAGE; 617 618 $subwiki = wiki_get_subwiki($options['swid']); 619 $cm = get_coursemodule_from_instance("wiki", $subwiki->wikiid); 620 $context = context_module::instance($cm->id); 621 622 $parser_options = array( 623 'link_callback' => '/mod/wiki/locallib.php:wiki_parser_link', 624 'link_callback_args' => array('swid' => $options['swid']), 625 'table_callback' => '/mod/wiki/locallib.php:wiki_parser_table', 626 'real_path_callback' => '/mod/wiki/locallib.php:wiki_parser_real_path', 627 'real_path_callback_args' => array( 628 'context' => $context, 629 'component' => 'mod_wiki', 630 'filearea' => 'attachments', 631 'subwikiid'=> $subwiki->id, 632 'pageid' => $options['pageid'] 633 ), 634 'pageid' => $options['pageid'], 635 'pretty_print' => (isset($options['pretty_print']) && $options['pretty_print']), 636 'printable' => (isset($options['printable']) && $options['printable']) 637 ); 638 639 return wiki_parser_proxy::parse($pagecontent, $markup, $parser_options); 640 } 641 642 /** 643 * This function is the parser callback to parse wiki links. 644 * 645 * It returns the necesary information to print a link. 646 * 647 * NOTE: Empty pages and non-existent pages must be print in red color. 648 * 649 * !!!!!! IMPORTANT !!!!!! 650 * It is critical that you call format_string on the content before it is used. 651 * 652 * @param string|stdClass $link name of a page or page object. 653 * @param array $options 654 * @return array Array('content' => string, 'url' => string, 'new' => bool, 'link_info' => array) 655 * 656 * @TODO Doc return and options 657 */ 658 function wiki_parser_link($link, $options = null) { 659 global $CFG; 660 661 if (is_object($link)) { 662 $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)); 663 664 $version = wiki_get_current_version($link->id); 665 if ($version->version == 0) { 666 $parsedlink['new'] = true; 667 } 668 return $parsedlink; 669 } else { 670 $swid = $options['swid']; 671 672 if ($page = wiki_get_page_by_title($swid, $link)) { 673 $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)); 674 675 $version = wiki_get_current_version($page->id); 676 if ($version->version == 0) { 677 $parsedlink['new'] = true; 678 } 679 680 return $parsedlink; 681 682 } else { 683 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)); 684 } 685 } 686 } 687 688 /** 689 * Returns the table fully parsed (HTML) 690 * 691 * @return HTML for the table $table 692 * @author Josep Arús Pous 693 * 694 **/ 695 function wiki_parser_table($table) { 696 global $OUTPUT; 697 698 $htmltable = new html_table(); 699 700 $headers = $table[0]; 701 $htmltable->head = array(); 702 foreach ($headers as $h) { 703 $htmltable->head[] = $h[1]; 704 } 705 706 array_shift($table); 707 $htmltable->data = array(); 708 foreach ($table as $row) { 709 $row_data = array(); 710 foreach ($row as $r) { 711 $row_data[] = $r[1]; 712 } 713 $htmltable->data[] = $row_data; 714 } 715 716 return html_writer::table($htmltable); 717 } 718 719 /** 720 * Returns an absolute path link, unless there is no such link. 721 * 722 * @param string $url Link's URL or filename 723 * @param stdClass $context filearea params 724 * @param string $component The component the file is associated with 725 * @param string $filearea The filearea the file is stored in 726 * @param int $swid Sub wiki id 727 * 728 * @return string URL for files full path 729 */ 730 731 function wiki_parser_real_path($url, $context, $component, $filearea, $swid) { 732 global $CFG; 733 734 if (preg_match("/^(?:http|ftp)s?\:\/\//", $url)) { 735 return $url; 736 } else { 737 738 $file = 'pluginfile.php'; 739 if (!$CFG->slasharguments) { 740 $file = $file . '?file='; 741 } 742 $baseurl = "$CFG->wwwroot/$file/{$context->id}/$component/$filearea/$swid/"; 743 // it is a file in current file area 744 return $baseurl . $url; 745 } 746 } 747 748 /** 749 * Returns the token used by a wiki language to represent a given tag or "object" (bold -> **) 750 * 751 * @return A string when it has only one token at the beginning (f. ex. lists). An array composed by 2 strings when it has 2 tokens, one at the beginning and one at the end (f. ex. italics). Returns false otherwise. 752 * @author Josep Arús Pous 753 **/ 754 function wiki_parser_get_token($markup, $name) { 755 756 return wiki_parser_proxy::get_token($name, $markup); 757 } 758 759 /** 760 * Checks if current user can view a subwiki 761 * 762 * @param stdClass $subwiki usually record from {wiki_subwikis}. Must contain fields 'wikiid', 'groupid', 'userid'. 763 * If it also contains fields 'course' and 'groupmode' from table {wiki} it will save extra DB query. 764 * @param stdClass $wiki optional wiki object if known 765 * @return bool 766 */ 767 function wiki_user_can_view($subwiki, $wiki = null) { 768 global $USER; 769 770 if (empty($wiki) || $wiki->id != $subwiki->wikiid) { 771 $wiki = wiki_get_wiki($subwiki->wikiid); 772 } 773 $modinfo = get_fast_modinfo($wiki->course); 774 if (!isset($modinfo->instances['wiki'][$subwiki->wikiid])) { 775 // Module does not exist. 776 return false; 777 } 778 $cm = $modinfo->instances['wiki'][$subwiki->wikiid]; 779 if (!$cm->uservisible) { 780 // The whole module is not visible to the current user. 781 return false; 782 } 783 $context = context_module::instance($cm->id); 784 785 // Working depending on activity groupmode 786 switch (groups_get_activity_groupmode($cm)) { 787 case NOGROUPS: 788 789 if ($wiki->wikimode == 'collaborative') { 790 // Collaborative Mode: 791 // There is one wiki for all the class. 792 // 793 // Only view capbility needed 794 return has_capability('mod/wiki:viewpage', $context); 795 } else if ($wiki->wikimode == 'individual') { 796 // Individual Mode: 797 // Each person owns a wiki. 798 if ($subwiki->userid == $USER->id) { 799 // Only the owner of the wiki can view it 800 return has_capability('mod/wiki:viewpage', $context); 801 } else { // User has special capabilities 802 // User must have: 803 // mod/wiki:viewpage capability 804 // and 805 // mod/wiki:managewiki capability 806 $view = has_capability('mod/wiki:viewpage', $context); 807 $manage = has_capability('mod/wiki:managewiki', $context); 808 809 return $view && $manage; 810 } 811 } else { 812 //Error 813 return false; 814 } 815 case SEPARATEGROUPS: 816 // Collaborative and Individual Mode 817 // 818 // Collaborative Mode: 819 // There is one wiki per group. 820 // Individual Mode: 821 // Each person owns a wiki. 822 if ($wiki->wikimode == 'collaborative' || $wiki->wikimode == 'individual') { 823 // Only members of subwiki group could view that wiki 824 if (in_array($subwiki->groupid, $modinfo->get_groups($cm->groupingid))) { 825 // Only view capability needed 826 return has_capability('mod/wiki:viewpage', $context); 827 828 } else { // User is not part of that group 829 // User must have: 830 // mod/wiki:managewiki capability 831 // or 832 // moodle/site:accessallgroups capability 833 // and 834 // mod/wiki:viewpage capability 835 $view = has_capability('mod/wiki:viewpage', $context); 836 $manage = has_capability('mod/wiki:managewiki', $context); 837 $access = has_capability('moodle/site:accessallgroups', $context); 838 return ($manage || $access) && $view; 839 } 840 } else { 841 //Error 842 return false; 843 } 844 case VISIBLEGROUPS: 845 // Collaborative and Individual Mode 846 // 847 // Collaborative Mode: 848 // There is one wiki per group. 849 // Individual Mode: 850 // Each person owns a wiki. 851 if ($wiki->wikimode == 'collaborative' || $wiki->wikimode == 'individual') { 852 // Everybody can read all wikis 853 // 854 // Only view capability needed 855 return has_capability('mod/wiki:viewpage', $context); 856 } else { 857 //Error 858 return false; 859 } 860 default: // Error 861 return false; 862 } 863 } 864 865 /** 866 * Checks if current user can edit a subwiki 867 * 868 * @param $subwiki 869 */ 870 function wiki_user_can_edit($subwiki) { 871 global $USER; 872 873 $wiki = wiki_get_wiki($subwiki->wikiid); 874 $cm = get_coursemodule_from_instance('wiki', $wiki->id); 875 $context = context_module::instance($cm->id); 876 877 // Working depending on activity groupmode 878 switch (groups_get_activity_groupmode($cm)) { 879 case NOGROUPS: 880 881 if ($wiki->wikimode == 'collaborative') { 882 // Collaborative Mode: 883 // There is a wiki for all the class. 884 // 885 // Only edit capbility needed 886 return has_capability('mod/wiki:editpage', $context); 887 } else if ($wiki->wikimode == 'individual') { 888 // Individual Mode 889 // There is a wiki per user 890 891 // Only the owner of that wiki can edit it 892 if ($subwiki->userid == $USER->id) { 893 return has_capability('mod/wiki:editpage', $context); 894 } else { // Current user is not the owner of that wiki. 895 896 // User must have: 897 // mod/wiki:editpage capability 898 // and 899 // mod/wiki:managewiki capability 900 $edit = has_capability('mod/wiki:editpage', $context); 901 $manage = has_capability('mod/wiki:managewiki', $context); 902 903 return $edit && $manage; 904 } 905 } else { 906 //Error 907 return false; 908 } 909 case SEPARATEGROUPS: 910 if ($wiki->wikimode == 'collaborative') { 911 // Collaborative Mode: 912 // There is one wiki per group. 913 // 914 // Only members of subwiki group could edit that wiki 915 if (groups_is_member($subwiki->groupid)) { 916 // Only edit capability needed 917 return has_capability('mod/wiki:editpage', $context); 918 } else { // User is not part of that group 919 // User must have: 920 // mod/wiki:managewiki capability 921 // and 922 // moodle/site:accessallgroups capability 923 // and 924 // mod/wiki:editpage capability 925 $manage = has_capability('mod/wiki:managewiki', $context); 926 $access = has_capability('moodle/site:accessallgroups', $context); 927 $edit = has_capability('mod/wiki:editpage', $context); 928 return $manage && $access && $edit; 929 } 930 } else if ($wiki->wikimode == 'individual') { 931 // Individual Mode: 932 // Each person owns a wiki. 933 // 934 // Only the owner of that wiki can edit it 935 if ($subwiki->userid == $USER->id) { 936 return has_capability('mod/wiki:editpage', $context); 937 } else { // Current user is not the owner of that wiki. 938 // User must have: 939 // mod/wiki:managewiki capability 940 // and 941 // moodle/site:accessallgroups capability 942 // and 943 // mod/wiki:editpage capability 944 $manage = has_capability('mod/wiki:managewiki', $context); 945 $access = has_capability('moodle/site:accessallgroups', $context); 946 $edit = has_capability('mod/wiki:editpage', $context); 947 return $manage && $access && $edit; 948 } 949 } else { 950 //Error 951 return false; 952 } 953 case VISIBLEGROUPS: 954 if ($wiki->wikimode == 'collaborative') { 955 // Collaborative Mode: 956 // There is one wiki per group. 957 // 958 // Only members of subwiki group could edit that wiki 959 if (groups_is_member($subwiki->groupid)) { 960 // Only edit capability needed 961 return has_capability('mod/wiki:editpage', $context); 962 } else { // User is not part of that group 963 // User must have: 964 // mod/wiki:managewiki capability 965 // and 966 // mod/wiki:editpage capability 967 $manage = has_capability('mod/wiki:managewiki', $context); 968 $edit = has_capability('mod/wiki:editpage', $context); 969 return $manage && $edit; 970 } 971 } else if ($wiki->wikimode == 'individual') { 972 // Individual Mode: 973 // Each person owns a wiki. 974 // 975 // Only the owner of that wiki can edit it 976 if ($subwiki->userid == $USER->id) { 977 return has_capability('mod/wiki:editpage', $context); 978 } else { // Current user is not the owner of that wiki. 979 // User must have: 980 // mod/wiki:managewiki capability 981 // and 982 // mod/wiki:editpage capability 983 $manage = has_capability('mod/wiki:managewiki', $context); 984 $edit = has_capability('mod/wiki:editpage', $context); 985 return $manage && $edit; 986 } 987 } else { 988 //Error 989 return false; 990 } 991 default: // Error 992 return false; 993 } 994 } 995 996 //---------------- 997 // Locks 998 //---------------- 999 1000 /** 1001 * Checks if a page-section is locked. 1002 * 1003 * @return true if the combination of section and page is locked, FALSE otherwise. 1004 */ 1005 function wiki_is_page_section_locked($pageid, $userid, $section = null) { 1006 global $DB; 1007 1008 $sql = "pageid = ? AND lockedat > ? AND userid != ?"; 1009 $params = array($pageid, time(), $userid); 1010 1011 if (!empty($section)) { 1012 $sql .= " AND (sectionname = ? OR sectionname IS null)"; 1013 $params[] = $section; 1014 } 1015 1016 return $DB->record_exists_select('wiki_locks', $sql, $params); 1017 } 1018 1019 /** 1020 * Inserts or updates a wiki_locks record. 1021 */ 1022 function wiki_set_lock($pageid, $userid, $section = null, $insert = false) { 1023 global $DB; 1024 1025 if (wiki_is_page_section_locked($pageid, $userid, $section)) { 1026 return false; 1027 } 1028 1029 $params = array('pageid' => $pageid, 'userid' => $userid, 'sectionname' => $section); 1030 1031 $lock = $DB->get_record('wiki_locks', $params); 1032 1033 if (!empty($lock)) { 1034 $DB->update_record('wiki_locks', array('id' => $lock->id, 'lockedat' => time() + LOCK_TIMEOUT)); 1035 } else if ($insert) { 1036 $DB->insert_record('wiki_locks', 1037 array('pageid' => $pageid, 'sectionname' => $section, 'userid' => $userid, 'lockedat' => time() + LOCK_TIMEOUT)); 1038 } 1039 1040 return true; 1041 } 1042 1043 /** 1044 * 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. 1045 * 1046 * @param int $pageid page id. 1047 * @param int $userid id of user for which lock is deleted. 1048 * @param string $section section to be deleted. 1049 * @param bool $delete_from_db deleted from db. 1050 * @param bool $delete_section_and_page delete section and page version. 1051 */ 1052 function wiki_delete_locks($pageid, $userid = null, $section = null, $delete_from_db = true, $delete_section_and_page = false) { 1053 global $DB; 1054 1055 $wiki = wiki_get_wiki_from_pageid($pageid); 1056 $cm = get_coursemodule_from_instance('wiki', $wiki->id); 1057 $context = context_module::instance($cm->id); 1058 1059 $params = array('pageid' => $pageid); 1060 1061 if (!empty($userid)) { 1062 $params['userid'] = $userid; 1063 } 1064 1065 if (!empty($section)) { 1066 $params['sectionname'] = $section; 1067 } 1068 1069 if ($delete_from_db) { 1070 $DB->delete_records('wiki_locks', $params); 1071 if ($delete_section_and_page && !empty($section)) { 1072 $params['sectionname'] = null; 1073 $DB->delete_records('wiki_locks', $params); 1074 } 1075 $event = \mod_wiki\event\page_locks_deleted::create( 1076 array( 1077 'context' => $context, 1078 'objectid' => $pageid, 1079 'relateduserid' => $userid, 1080 'other' => array( 1081 'section' => $section 1082 ) 1083 )); 1084 // No need to add snapshot, as important data is section, userid and pageid, which is part of event. 1085 $event->trigger(); 1086 } else { 1087 $DB->set_field('wiki_locks', 'lockedat', time(), $params); 1088 } 1089 } 1090 1091 /** 1092 * Deletes wiki_locks that expired 1 hour ago. 1093 */ 1094 function wiki_delete_old_locks() { 1095 global $DB; 1096 1097 $DB->delete_records_select('wiki_locks', "lockedat < ?", array(time() - 3600)); 1098 } 1099 1100 /** 1101 * Deletes wiki_links. It can be sepecific link or links attached in subwiki 1102 * 1103 * @global mixed $DB database object 1104 * @param int $linkid id of the link to be deleted 1105 * @param int $topageid links to the specific page 1106 * @param int $frompageid links from specific page 1107 * @param int $subwikiid links to subwiki 1108 */ 1109 function wiki_delete_links($linkid = null, $topageid = null, $frompageid = null, $subwikiid = null) { 1110 global $DB; 1111 $params = array(); 1112 1113 // if link id is givien then don't check for anything else 1114 if (!empty($linkid)) { 1115 $params['id'] = $linkid; 1116 } else { 1117 if (!empty($topageid)) { 1118 $params['topageid'] = $topageid; 1119 } 1120 if (!empty($frompageid)) { 1121 $params['frompageid'] = $frompageid; 1122 } 1123 if (!empty($subwikiid)) { 1124 $params['subwikiid'] = $subwikiid; 1125 } 1126 } 1127 1128 //Delete links if any params are passed, else nothing to delete. 1129 if (!empty($params)) { 1130 $DB->delete_records('wiki_links', $params); 1131 } 1132 } 1133 1134 /** 1135 * Delete wiki synonyms related to subwikiid or page 1136 * 1137 * @param int $subwikiid id of sunbwiki 1138 * @param int $pageid id of page 1139 */ 1140 function wiki_delete_synonym($subwikiid, $pageid = null) { 1141 global $DB; 1142 1143 $params = array('subwikiid' => $subwikiid); 1144 if (!is_null($pageid)) { 1145 $params['pageid'] = $pageid; 1146 } 1147 $DB->delete_records('wiki_synonyms', $params, IGNORE_MISSING); 1148 } 1149 1150 /** 1151 * Delete pages and all related data 1152 * 1153 * @param mixed $context context in which page needs to be deleted. 1154 * @param mixed $pageids id's of pages to be deleted 1155 * @param int $subwikiid id of the subwiki for which all pages should be deleted 1156 */ 1157 function wiki_delete_pages($context, $pageids = null, $subwikiid = null) { 1158 global $DB, $CFG; 1159 1160 if (!empty($pageids) && is_int($pageids)) { 1161 $pageids = array($pageids); 1162 } else if (!empty($subwikiid)) { 1163 $pageids = wiki_get_page_list($subwikiid); 1164 } 1165 1166 //If there is no pageid then return as we can't delete anything. 1167 if (empty($pageids)) { 1168 return; 1169 } 1170 1171 /// Delete page and all it's relevent data 1172 foreach ($pageids as $pageid) { 1173 if (is_object($pageid)) { 1174 $pageid = $pageid->id; 1175 } 1176 1177 //Delete page comments 1178 $comments = wiki_get_comments($context->id, $pageid); 1179 foreach ($comments as $commentid => $commentvalue) { 1180 wiki_delete_comment($commentid, $context, $pageid); 1181 } 1182 1183 //Delete page tags 1184 core_tag_tag::remove_all_item_tags('mod_wiki', 'wiki_pages', $pageid); 1185 1186 //Delete Synonym 1187 wiki_delete_synonym($subwikiid, $pageid); 1188 1189 //Delete all page versions 1190 wiki_delete_page_versions(array($pageid=>array(0)), $context); 1191 1192 //Delete all page locks 1193 wiki_delete_locks($pageid); 1194 1195 //Delete all page links 1196 wiki_delete_links(null, $pageid); 1197 1198 $params = array('id' => $pageid); 1199 1200 // Get page before deleting. 1201 $page = $DB->get_record('wiki_pages', $params); 1202 1203 //Delete page 1204 $DB->delete_records('wiki_pages', $params); 1205 1206 // Trigger page_deleted event. 1207 $event = \mod_wiki\event\page_deleted::create( 1208 array( 1209 'context' => $context, 1210 'objectid' => $pageid, 1211 'other' => array('subwikiid' => $subwikiid) 1212 )); 1213 $event->add_record_snapshot('wiki_pages', $page); 1214 $event->trigger(); 1215 } 1216 } 1217 1218 /** 1219 * Delete specificed versions of a page or versions created by users 1220 * if version is 0 then it will remove all versions of the page 1221 * 1222 * @param array $deleteversions delete versions for a page 1223 * @param context_module $context module context 1224 */ 1225 function wiki_delete_page_versions($deleteversions, $context = null) { 1226 global $DB; 1227 1228 /// delete page-versions 1229 foreach ($deleteversions as $id => $versions) { 1230 $params = array('pageid' => $id); 1231 if (is_null($context)) { 1232 $wiki = wiki_get_wiki_from_pageid($id); 1233 $cm = get_coursemodule_from_instance('wiki', $wiki->id); 1234 $context = context_module::instance($cm->id); 1235 } 1236 // Delete all versions, if version specified is 0. 1237 if (in_array(0, $versions)) { 1238 $oldversions = $DB->get_records('wiki_versions', $params); 1239 $DB->delete_records('wiki_versions', $params, IGNORE_MISSING); 1240 } else { 1241 list($insql, $param) = $DB->get_in_or_equal($versions); 1242 $insql .= ' AND pageid = ?'; 1243 array_push($param, $params['pageid']); 1244 $oldversions = $DB->get_records_select('wiki_versions', 'version ' . $insql, $param); 1245 $DB->delete_records_select('wiki_versions', 'version ' . $insql, $param); 1246 } 1247 foreach ($oldversions as $version) { 1248 // Trigger page version deleted event. 1249 $event = \mod_wiki\event\page_version_deleted::create( 1250 array( 1251 'context' => $context, 1252 'objectid' => $version->id, 1253 'other' => array( 1254 'pageid' => $id 1255 ) 1256 )); 1257 $event->add_record_snapshot('wiki_versions', $version); 1258 $event->trigger(); 1259 } 1260 } 1261 } 1262 1263 function wiki_get_comment($commentid){ 1264 global $DB; 1265 return $DB->get_record('comments', array('id' => $commentid)); 1266 } 1267 1268 /** 1269 * Returns all comments by context and pageid 1270 * 1271 * @param int $contextid Current context id 1272 * @param int $pageid Current pageid 1273 **/ 1274 function wiki_get_comments($contextid, $pageid) { 1275 global $DB; 1276 1277 return $DB->get_records('comments', array('contextid' => $contextid, 'itemid' => $pageid, 'commentarea' => 'wiki_page'), 'timecreated ASC'); 1278 } 1279 1280 /** 1281 * Add comments ro database 1282 * 1283 * @param object $context. Current context 1284 * @param int $pageid. Current pageid 1285 * @param string $content. Content of the comment 1286 * @param string editor. Version of editor we are using. 1287 **/ 1288 function wiki_add_comment($context, $pageid, $content, $editor) { 1289 global $CFG; 1290 require_once($CFG->dirroot . '/comment/lib.php'); 1291 1292 list($context, $course, $cm) = get_context_info_array($context->id); 1293 $cmt = new stdclass(); 1294 $cmt->context = $context; 1295 $cmt->itemid = $pageid; 1296 $cmt->area = 'wiki_page'; 1297 $cmt->course = $course; 1298 $cmt->component = 'mod_wiki'; 1299 1300 $manager = new comment($cmt); 1301 1302 if ($editor == 'creole') { 1303 $manager->add($content, FORMAT_CREOLE); 1304 } else if ($editor == 'html') { 1305 $manager->add($content, FORMAT_HTML); 1306 } else if ($editor == 'nwiki') { 1307 $manager->add($content, FORMAT_NWIKI); 1308 } 1309 1310 } 1311 1312 /** 1313 * Delete comments from database 1314 * 1315 * @param $idcomment. Id of comment which will be deleted 1316 * @param $context. Current context 1317 * @param $pageid. Current pageid 1318 **/ 1319 function wiki_delete_comment($idcomment, $context, $pageid) { 1320 global $CFG; 1321 require_once($CFG->dirroot . '/comment/lib.php'); 1322 1323 list($context, $course, $cm) = get_context_info_array($context->id); 1324 $cmt = new stdClass(); 1325 $cmt->context = $context; 1326 $cmt->itemid = $pageid; 1327 $cmt->area = 'wiki_page'; 1328 $cmt->course = $course; 1329 $cmt->component = 'mod_wiki'; 1330 1331 $manager = new comment($cmt); 1332 $manager->delete($idcomment); 1333 1334 } 1335 1336 /** 1337 * Delete al comments from wiki 1338 * 1339 **/ 1340 function wiki_delete_comments_wiki() { 1341 global $PAGE, $DB; 1342 1343 $cm = $PAGE->cm; 1344 $context = context_module::instance($cm->id); 1345 1346 $table = 'comments'; 1347 $select = 'contextid = ?'; 1348 1349 $DB->delete_records_select($table, $select, array($context->id)); 1350 1351 } 1352 1353 function wiki_add_progress($pageid, $oldversionid, $versionid, $progress) { 1354 global $DB; 1355 for ($v = $oldversionid + 1; $v <= $versionid; $v++) { 1356 $user = wiki_get_wiki_page_id($pageid, $v); 1357 1358 $DB->insert_record('wiki_progress', array('userid' => $user->userid, 'pageid' => $pageid, 'versionid' => $v, 'progress' => $progress)); 1359 } 1360 } 1361 1362 function wiki_get_wiki_page_id($pageid, $id) { 1363 global $DB; 1364 return $DB->get_record('wiki_versions', array('pageid' => $pageid, 'id' => $id)); 1365 } 1366 1367 function wiki_print_page_content($page, $context, $subwikiid) { 1368 global $OUTPUT, $CFG; 1369 1370 if ($page->timerendered + WIKI_REFRESH_CACHE_TIME < time()) { 1371 $content = wiki_refresh_cachedcontent($page); 1372 $page = $content['page']; 1373 } 1374 1375 if (isset($content)) { 1376 $box = ''; 1377 foreach ($content['sections'] as $s) { 1378 $box .= '<p>' . get_string('repeatedsection', 'wiki', $s) . '</p>'; 1379 } 1380 1381 if (!empty($box)) { 1382 echo $OUTPUT->box($box); 1383 } 1384 } 1385 $html = file_rewrite_pluginfile_urls($page->cachedcontent, 'pluginfile.php', $context->id, 'mod_wiki', 'attachments', $subwikiid); 1386 $html = format_text($html, FORMAT_HTML, array('overflowdiv' => true, 'allowid' => true)); 1387 echo $OUTPUT->box($html); 1388 1389 echo $OUTPUT->tag_list(core_tag_tag::get_item_tags('mod_wiki', 'wiki_pages', $page->id), 1390 null, 'wiki-tags'); 1391 1392 wiki_increment_pageviews($page); 1393 } 1394 1395 /** 1396 * This function trims any given text and returns it with some dots at the end 1397 * 1398 * @param string $text 1399 * @param string $limit 1400 * 1401 * @return string 1402 */ 1403 function wiki_trim_string($text, $limit = 25) { 1404 1405 if (core_text::strlen($text) > $limit) { 1406 $text = core_text::substr($text, 0, $limit) . '...'; 1407 } 1408 1409 return $text; 1410 } 1411 1412 /** 1413 * Prints default edit form fields and buttons 1414 * 1415 * @param string $format Edit form format (html, creole...) 1416 * @param integer $version Version number. A negative number means no versioning. 1417 */ 1418 1419 function wiki_print_edit_form_default_fields($format, $pageid, $version = -1, $upload = false, $deleteuploads = array()) { 1420 global $CFG, $PAGE, $OUTPUT; 1421 1422 echo '<input type="hidden" name="sesskey" value="' . sesskey() . '" />'; 1423 1424 if ($version >= 0) { 1425 echo '<input type="hidden" name="version" value="' . $version . '" />'; 1426 } 1427 1428 echo '<input type="hidden" name="format" value="' . $format . '"/>'; 1429 1430 //attachments 1431 require_once($CFG->dirroot . '/lib/form/filemanager.php'); 1432 1433 $filemanager = new MoodleQuickForm_filemanager('attachments', get_string('wikiattachments', 'wiki'), array('id' => 'attachments'), array('subdirs' => false, 'maxfiles' => 99, 'maxbytes' => $CFG->maxbytes)); 1434 1435 $value = file_get_submitted_draft_itemid('attachments'); 1436 if (!empty($value) && !$upload) { 1437 $filemanager->setValue($value); 1438 } 1439 1440 echo "<fieldset class=\"wiki-upload-section clearfix\"><legend class=\"ftoggler\">" . get_string("uploadtitle", 'wiki') . "</legend>"; 1441 1442 echo $OUTPUT->container_start('container'); 1443 print $filemanager->toHtml(); 1444 echo $OUTPUT->container_end(); 1445 1446 $cm = $PAGE->cm; 1447 $context = context_module::instance($cm->id); 1448 1449 echo $OUTPUT->container_start('container wiki-upload-table'); 1450 wiki_print_upload_table($context, 'wiki_upload', $pageid, $deleteuploads); 1451 echo $OUTPUT->container_end(); 1452 1453 echo "</fieldset>"; 1454 1455 echo '<input class="wiki_button btn btn-secondary" type="submit" name="editoption" value="' 1456 . get_string('save', 'wiki') . '" />'; 1457 echo '<input class="wiki_button btn btn-secondary" type="submit" name="editoption" value="' 1458 . get_string('upload', 'wiki') . '" />'; 1459 echo '<input class="wiki_button btn btn-secondary" type="submit" name="editoption" value="' . get_string('preview') . '" />'; 1460 echo '<input class="wiki_button btn btn-secondary" type="submit" name="editoption" value="' . get_string('cancel') . '" />'; 1461 } 1462 1463 /** 1464 * Prints a table with the files attached to a wiki page 1465 * @param object $context 1466 * @param string $filearea 1467 * @param int $fileitemid 1468 * @param array deleteuploads 1469 */ 1470 function wiki_print_upload_table($context, $filearea, $fileitemid, $deleteuploads = array()) { 1471 global $CFG, $OUTPUT; 1472 1473 $htmltable = new html_table(); 1474 1475 $htmltable->head = array(get_string('deleteupload', 'wiki'), get_string('uploadname', 'wiki'), get_string('uploadactions', 'wiki')); 1476 1477 $fs = get_file_storage(); 1478 $files = $fs->get_area_files($context->id, 'mod_wiki', $filearea, $fileitemid); //TODO: this is weird (skodak) 1479 1480 foreach ($files as $file) { 1481 if (!$file->is_directory()) { 1482 $checkbox = '<input type="checkbox" name="deleteupload[]", value="' . $file->get_pathnamehash() . '"'; 1483 1484 if (in_array($file->get_pathnamehash(), $deleteuploads)) { 1485 $checkbox .= ' checked="checked"'; 1486 } 1487 1488 $checkbox .= " />"; 1489 1490 $htmltable->data[] = array($checkbox, '<a href="' . file_encode_url($CFG->wwwroot . '/pluginfile.php', '/' . $context->id . '/wiki_upload/' . $fileitemid . '/' . $file->get_filename()) . '">' . $file->get_filename() . '</a>', ""); 1491 } 1492 } 1493 1494 print '<h3 class="upload-table-title">' . get_string('uploadfiletitle', 'wiki') . "</h3>"; 1495 print html_writer::table($htmltable); 1496 } 1497 1498 /** 1499 * Generate wiki's page tree 1500 * 1501 * @param page_wiki $page. A wiki page object 1502 * @param navigation_node $node. Starting navigation_node 1503 * @param array $keys. An array to store keys 1504 * @return an array with all tree nodes 1505 */ 1506 function wiki_build_tree($page, $node, &$keys) { 1507 $content = array(); 1508 static $icon = null; 1509 if ($icon === null) { 1510 // Substitute the default navigation icon with empty image. 1511 $icon = new pix_icon('spacer', ''); 1512 } 1513 $pages = wiki_get_linked_pages($page->id); 1514 foreach ($pages as $p) { 1515 $key = $page->id . ':' . $p->id; 1516 if (in_array($key, $keys)) { 1517 break; 1518 } 1519 array_push($keys, $key); 1520 $l = wiki_parser_link($p); 1521 $link = new moodle_url('/mod/wiki/view.php', array('pageid' => $p->id)); 1522 // navigation_node::get_content will format the title for us 1523 $nodeaux = $node->add($p->title, $link, null, null, null, $icon); 1524 if ($l['new']) { 1525 $nodeaux->add_class('wiki_newentry'); 1526 } 1527 wiki_build_tree($p, $nodeaux, $keys); 1528 } 1529 $content[] = $node; 1530 return $content; 1531 } 1532 1533 /** 1534 * Get linked pages from page 1535 * @param int $pageid 1536 */ 1537 function wiki_get_linked_pages($pageid) { 1538 global $DB; 1539 1540 $sql = "SELECT p.id, p.title 1541 FROM {wiki_pages} p 1542 JOIN {wiki_links} l ON l.topageid = p.id 1543 WHERE l.frompageid = ? 1544 ORDER BY p.title ASC"; 1545 return $DB->get_records_sql($sql, array($pageid)); 1546 } 1547 1548 /** 1549 * Get updated pages from wiki 1550 * @param int $pageid 1551 */ 1552 function wiki_get_updated_pages_by_subwiki($swid) { 1553 global $DB, $USER; 1554 1555 $sql = "SELECT * 1556 FROM {wiki_pages} 1557 WHERE subwikiid = ? AND timemodified > ? 1558 ORDER BY timemodified DESC"; 1559 return $DB->get_records_sql($sql, array($swid, $USER->lastlogin)); 1560 } 1561 1562 /** 1563 * Check if the user can create pages in a certain wiki. 1564 * @param context $context Wiki's context. 1565 * @param integer|stdClass $user A user id or object. By default (null) checks the permissions of the current user. 1566 * @return bool True if user can create pages, false otherwise. 1567 * @since Moodle 3.1 1568 */ 1569 function wiki_can_create_pages($context, $user = null) { 1570 return has_capability('mod/wiki:createpage', $context, $user); 1571 } 1572 1573 /** 1574 * Get a sub wiki instance by wiki id, group id and user id. 1575 * If the wiki doesn't exist in DB it will return an isntance with id -1. 1576 * 1577 * @param int $wikiid Wiki ID. 1578 * @param int $groupid Group ID. 1579 * @param int $userid User ID. 1580 * @return object Subwiki instance. 1581 * @since Moodle 3.1 1582 */ 1583 function wiki_get_possible_subwiki_by_group($wikiid, $groupid, $userid = 0) { 1584 if (!$subwiki = wiki_get_subwiki_by_group($wikiid, $groupid, $userid)) { 1585 $subwiki = new stdClass(); 1586 $subwiki->id = -1; 1587 $subwiki->wikiid = $wikiid; 1588 $subwiki->groupid = $groupid; 1589 $subwiki->userid = $userid; 1590 } 1591 return $subwiki; 1592 } 1593 1594 /** 1595 * Get all the possible subwikis visible to the user in a wiki. 1596 * It will return all the subwikis that can be created in a wiki, even if they don't exist in DB yet. 1597 * 1598 * @param stdClass $wiki Wiki to get the subwikis from. 1599 * @param cm_info|stdClass $cm Optional. The course module object. 1600 * @param context_module $context Optional. Context of wiki module. 1601 * @return array List of subwikis. 1602 * @since Moodle 3.1 1603 */ 1604 function wiki_get_visible_subwikis($wiki, $cm = null, $context = null) { 1605 global $USER; 1606 1607 $subwikis = array(); 1608 1609 if (empty($wiki) or !is_object($wiki)) { 1610 // Wiki not valid. 1611 return $subwikis; 1612 } 1613 1614 if (empty($cm)) { 1615 $cm = get_coursemodule_from_instance('wiki', $wiki->id); 1616 } 1617 if (empty($context)) { 1618 $context = context_module::instance($cm->id); 1619 } 1620 1621 if (!has_capability('mod/wiki:viewpage', $context)) { 1622 return $subwikis; 1623 } 1624 1625 $manage = has_capability('mod/wiki:managewiki', $context); 1626 1627 if (!$groupmode = groups_get_activity_groupmode($cm)) { 1628 // No groups. 1629 if ($wiki->wikimode == 'collaborative') { 1630 // Only 1 subwiki. 1631 $subwikis[] = wiki_get_possible_subwiki_by_group($wiki->id, 0, 0); 1632 } else if ($wiki->wikimode == 'individual') { 1633 // There's 1 subwiki per user. 1634 if ($manage) { 1635 // User can view all subwikis. 1636 $users = get_enrolled_users($context); 1637 foreach ($users as $user) { 1638 $subwikis[] = wiki_get_possible_subwiki_by_group($wiki->id, 0, $user->id); 1639 } 1640 } else { 1641 // User can only see his subwiki. 1642 $subwikis[] = wiki_get_possible_subwiki_by_group($wiki->id, 0, $USER->id); 1643 } 1644 } 1645 } else { 1646 if ($wiki->wikimode == 'collaborative') { 1647 // 1 subwiki per group. 1648 $aag = has_capability('moodle/site:accessallgroups', $context); 1649 if ($aag || $groupmode == VISIBLEGROUPS) { 1650 // User can see all groups. 1651 $allowedgroups = groups_get_all_groups($cm->course, 0, $cm->groupingid); 1652 $allparticipants = new stdClass(); 1653 $allparticipants->id = 0; 1654 array_unshift($allowedgroups, $allparticipants); // Add all participants. 1655 } else { 1656 // User can only see the groups he belongs to. 1657 $allowedgroups = groups_get_all_groups($cm->course, $USER->id, $cm->groupingid); 1658 } 1659 1660 foreach ($allowedgroups as $group) { 1661 $subwikis[] = wiki_get_possible_subwiki_by_group($wiki->id, $group->id, 0); 1662 } 1663 } else if ($wiki->wikimode == 'individual') { 1664 // 1 subwiki per user and group. 1665 1666 if ($manage || $groupmode == VISIBLEGROUPS) { 1667 // User can view all subwikis. 1668 $users = get_enrolled_users($context); 1669 foreach ($users as $user) { 1670 // Get all the groups this user belongs to. 1671 $groups = groups_get_all_groups($cm->course, $user->id); 1672 if (!empty($groups)) { 1673 foreach ($groups as $group) { 1674 $subwikis[] = wiki_get_possible_subwiki_by_group($wiki->id, $group->id, $user->id); 1675 } 1676 } else { 1677 // User doesn't belong to any group, add it to group 0. 1678 $subwikis[] = wiki_get_possible_subwiki_by_group($wiki->id, 0, $user->id); 1679 } 1680 } 1681 } else { 1682 // The user can only see the subwikis of the groups he belongs. 1683 $allowedgroups = groups_get_all_groups($cm->course, $USER->id, $cm->groupingid); 1684 foreach ($allowedgroups as $group) { 1685 $users = groups_get_members($group->id); 1686 foreach ($users as $user) { 1687 $subwikis[] = wiki_get_possible_subwiki_by_group($wiki->id, $group->id, $user->id); 1688 } 1689 } 1690 } 1691 } 1692 } 1693 1694 return $subwikis; 1695 } 1696 1697 /** 1698 * Utility function for getting a subwiki by group and user, validating that the user can view it. 1699 * If the subwiki doesn't exists in DB yet it'll have id -1. 1700 * 1701 * @param stdClass $wiki The wiki. 1702 * @param int $groupid Group ID. 0 means the subwiki doesn't use groups. 1703 * @param int $userid User ID. 0 means the subwiki doesn't use users. 1704 * @return stdClass Subwiki. If it doesn't exists in DB yet it'll have id -1. If the user can't view the 1705 * subwiki this function will return false. 1706 * @since Moodle 3.1 1707 * @throws moodle_exception 1708 */ 1709 function wiki_get_subwiki_by_group_and_user_with_validation($wiki, $groupid, $userid) { 1710 global $USER, $DB; 1711 1712 // Get subwiki based on group and user. 1713 if (!$subwiki = wiki_get_subwiki_by_group($wiki->id, $groupid, $userid)) { 1714 1715 // The subwiki doesn't exist. 1716 // Validate if user is valid. 1717 if ($userid != 0) { 1718 $user = core_user::get_user($userid, '*', MUST_EXIST); 1719 core_user::require_active_user($user); 1720 } 1721 1722 // Validate that groupid is valid. 1723 if ($groupid != 0 && !groups_group_exists($groupid)) { 1724 throw new moodle_exception('cannotfindgroup', 'error'); 1725 } 1726 1727 // Valid data but subwiki not found. We'll simulate a subwiki object to check if the user would be able to see it 1728 // if it existed. If he's able to see it then we'll return an empty array because the subwiki has no pages. 1729 $subwiki = new stdClass(); 1730 $subwiki->id = -1; 1731 $subwiki->wikiid = $wiki->id; 1732 $subwiki->userid = $userid; 1733 $subwiki->groupid = $groupid; 1734 } 1735 1736 // Check that the user can view the subwiki. This function checks capabilities. 1737 if (!wiki_user_can_view($subwiki, $wiki)) { 1738 return false; 1739 } 1740 1741 return $subwiki; 1742 } 1743 1744 /** 1745 * Returns wiki pages tagged with a specified tag. 1746 * 1747 * This is a callback used by the tag area mod_wiki/wiki_pages to search for wiki pages 1748 * tagged with a specific tag. 1749 * 1750 * @param core_tag_tag $tag 1751 * @param bool $exclusivemode if set to true it means that no other entities tagged with this tag 1752 * are displayed on the page and the per-page limit may be bigger 1753 * @param int $fromctx context id where the link was displayed, may be used by callbacks 1754 * to display items in the same context first 1755 * @param int $ctx context id where to search for records 1756 * @param bool $rec search in subcontexts as well 1757 * @param int $page 0-based number of page being displayed 1758 * @return \core_tag\output\tagindex 1759 */ 1760 function mod_wiki_get_tagged_pages($tag, $exclusivemode = false, $fromctx = 0, $ctx = 0, $rec = 1, $page = 0) { 1761 global $OUTPUT; 1762 $perpage = $exclusivemode ? 20 : 5; 1763 1764 // Build the SQL query. 1765 $ctxselect = context_helper::get_preload_record_columns_sql('ctx'); 1766 $query = "SELECT wp.id, wp.title, ws.userid, ws.wikiid, ws.id AS subwikiid, ws.groupid, w.wikimode, 1767 cm.id AS cmid, c.id AS courseid, c.shortname, c.fullname, $ctxselect 1768 FROM {wiki_pages} wp 1769 JOIN {wiki_subwikis} ws ON wp.subwikiid = ws.id 1770 JOIN {wiki} w ON w.id = ws.wikiid 1771 JOIN {modules} m ON m.name='wiki' 1772 JOIN {course_modules} cm ON cm.module = m.id AND cm.instance = w.id 1773 JOIN {tag_instance} tt ON wp.id = tt.itemid 1774 JOIN {course} c ON cm.course = c.id 1775 JOIN {context} ctx ON ctx.instanceid = cm.id AND ctx.contextlevel = :coursemodulecontextlevel 1776 WHERE tt.itemtype = :itemtype AND tt.tagid = :tagid AND tt.component = :component 1777 AND cm.deletioninprogress = 0 1778 AND wp.id %ITEMFILTER% AND c.id %COURSEFILTER%"; 1779 1780 $params = array('itemtype' => 'wiki_pages', 'tagid' => $tag->id, 'component' => 'mod_wiki', 1781 'coursemodulecontextlevel' => CONTEXT_MODULE); 1782 1783 if ($ctx) { 1784 $context = $ctx ? context::instance_by_id($ctx) : context_system::instance(); 1785 $query .= $rec ? ' AND (ctx.id = :contextid OR ctx.path LIKE :path)' : ' AND ctx.id = :contextid'; 1786 $params['contextid'] = $context->id; 1787 $params['path'] = $context->path.'/%'; 1788 } 1789 1790 $query .= " ORDER BY "; 1791 if ($fromctx) { 1792 // In order-clause specify that modules from inside "fromctx" context should be returned first. 1793 $fromcontext = context::instance_by_id($fromctx); 1794 $query .= ' (CASE WHEN ctx.id = :fromcontextid OR ctx.path LIKE :frompath THEN 0 ELSE 1 END),'; 1795 $params['fromcontextid'] = $fromcontext->id; 1796 $params['frompath'] = $fromcontext->path.'/%'; 1797 } 1798 $query .= ' c.sortorder, cm.id, wp.id'; 1799 1800 $totalpages = $page + 1; 1801 1802 // Use core_tag_index_builder to build and filter the list of items. 1803 $builder = new core_tag_index_builder('mod_wiki', 'wiki_pages', $query, $params, $page * $perpage, $perpage + 1); 1804 while ($item = $builder->has_item_that_needs_access_check()) { 1805 context_helper::preload_from_record($item); 1806 $courseid = $item->courseid; 1807 if (!$builder->can_access_course($courseid)) { 1808 $builder->set_accessible($item, false); 1809 continue; 1810 } 1811 $modinfo = get_fast_modinfo($builder->get_course($courseid)); 1812 // Set accessibility of this item and all other items in the same course. 1813 $builder->walk(function ($taggeditem) use ($courseid, $modinfo, $builder) { 1814 if ($taggeditem->courseid == $courseid) { 1815 $accessible = false; 1816 if (($cm = $modinfo->get_cm($taggeditem->cmid)) && $cm->uservisible) { 1817 $subwiki = (object)array('id' => $taggeditem->subwikiid, 'groupid' => $taggeditem->groupid, 1818 'userid' => $taggeditem->userid, 'wikiid' => $taggeditem->wikiid); 1819 $wiki = (object)array('id' => $taggeditem->wikiid, 'wikimode' => $taggeditem->wikimode, 1820 'course' => $cm->course); 1821 $accessible = wiki_user_can_view($subwiki, $wiki); 1822 } 1823 $builder->set_accessible($taggeditem, $accessible); 1824 } 1825 }); 1826 } 1827 1828 $items = $builder->get_items(); 1829 if (count($items) > $perpage) { 1830 $totalpages = $page + 2; // We don't need exact page count, just indicate that the next page exists. 1831 array_pop($items); 1832 } 1833 1834 // Build the display contents. 1835 if ($items) { 1836 $tagfeed = new core_tag\output\tagfeed(); 1837 foreach ($items as $item) { 1838 context_helper::preload_from_record($item); 1839 $modinfo = get_fast_modinfo($item->courseid); 1840 $cm = $modinfo->get_cm($item->cmid); 1841 $pageurl = new moodle_url('/mod/wiki/view.php', array('pageid' => $item->id)); 1842 $pagename = format_string($item->title, true, array('context' => context_module::instance($item->cmid))); 1843 $pagename = html_writer::link($pageurl, $pagename); 1844 $courseurl = course_get_url($item->courseid, $cm->sectionnum); 1845 $cmname = html_writer::link($cm->url, $cm->get_formatted_name()); 1846 $coursename = format_string($item->fullname, true, array('context' => context_course::instance($item->courseid))); 1847 $coursename = html_writer::link($courseurl, $coursename); 1848 $icon = html_writer::link($pageurl, html_writer::empty_tag('img', array('src' => $cm->get_icon_url()))); 1849 $tagfeed->add($icon, $pagename, $cmname.'<br>'.$coursename); 1850 } 1851 1852 $content = $OUTPUT->render_from_template('core_tag/tagfeed', 1853 $tagfeed->export_for_template($OUTPUT)); 1854 1855 return new core_tag\output\tagindex($tag, 'mod_wiki', 'wiki_pages', $content, 1856 $exclusivemode, $fromctx, $ctx, $rec, $page, $totalpages); 1857 } 1858 }
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