mod/data/view.php

   1 <?php  // $Id$
   2 ///////////////////////////////////////////////////////////////////////////
   3 //                                                                       //
   4 // NOTICE OF COPYRIGHT                                                   //
   5 //                                                                       //
   6 // Moodle - Modular Object-Oriented Dynamic Learning Environment         //
   7 //          http://moodle.org                                            //
   8 //                                                                       //
   9 // Copyright (C) 2005 Martin Dougiamas  http://dougiamas.com             //
  10 //                                                                       //
  11 // This program is free software; you can redistribute it and/or modify  //
  12 // it under the terms of the GNU General Public License as published by  //
  13 // the Free Software Foundation; either version 2 of the License, or     //
  14 // (at your option) any later version.                                   //
  15 //                                                                       //
  16 // This program is distributed in the hope that it will be useful,       //
  17 // but WITHOUT ANY WARRANTY; without even the implied warranty of        //
  18 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         //
  19 // GNU General Public License for more details:                          //
  20 //                                                                       //
  21 //          http://www.gnu.org/copyleft/gpl.html                         //
  22 //                                                                       //
  23 ///////////////////////////////////////////////////////////////////////////
  24
  25     require_once('../../config.php');
  26     require_once('lib.php');
  27     require_once($CFG->libdir.'/blocklib.php');
  28     require_once("$CFG->libdir/rsslib.php");
  29
  30     require_once('pagelib.php');
  31
  32 /// One of these is necessary!
  33     $id = optional_param('id', 0, PARAM_INT);  // course module id
  34     $d = optional_param('d', 0, PARAM_INT);   // database id
  35     $rid = optional_param('rid', 0, PARAM_INT);    //record id
  36     $mode = optional_param('mode', '', PARAM_ALPHA);    // Force the browse mode  ('single')
  37     $filter = optional_param('filter', 0, PARAM_BOOL);
  38     // search filter will only be applied when $filter is true
  39
  40     $edit = optional_param('edit', -1, PARAM_BOOL);
  41     $page = optional_param('page', 0, PARAM_INT);
  42 /// These can be added to perform an action on a record
  43     $approve = optional_param('approve', 0, PARAM_INT);    //approval recordid
  44     $delete = optional_param('delete', 0, PARAM_INT);    //delete recordid
  45
  46     if ($id) {
  47         if (! $cm = get_coursemodule_from_id('data', $id)) {
  48             error('Course Module ID was incorrect');
  49         }
  50         if (! $course = get_record('course', 'id', $cm->course)) {
  51             error('Course is misconfigured');
  52         }
  53         if (! $data = get_record('data', 'id', $cm->instance)) {
  54             error('Course module is incorrect');
  55         }
  56         $record = NULL;
  57
  58     } else if ($rid) {
  59         if (! $record = get_record('data_records', 'id', $rid)) {
  60             error('Record ID is incorrect');
  61         }
  62         if (! $data = get_record('data', 'id', $record->dataid)) {
  63             error('Data ID is incorrect');
  64         }
  65         if (! $course = get_record('course', 'id', $data->course)) {
  66             error('Course is misconfigured');
  67         }
  68         if (! $cm = get_coursemodule_from_instance('data', $data->id, $course->id)) {
  69             error('Course Module ID was incorrect');
  70         }
  71     } else {   // We must have $d
  72         if (! $data = get_record('data', 'id', $d)) {
  73             error('Data ID is incorrect');
  74         }
  75         if (! $course = get_record('course', 'id', $data->course)) {
  76             error('Course is misconfigured');
  77         }
  78         if (! $cm = get_coursemodule_from_instance('data', $data->id, $course->id)) {
  79             error('Course Module ID was incorrect');
  80         }
  81         $record = NULL;
  82     }
  83
  84     require_course_login($course, true, $cm);
  85
  86     $context = get_context_instance(CONTEXT_MODULE, $cm->id);
  87     require_capability('mod/data:viewentry', $context);
  88
  89 /// If we have an empty Database then redirect because this page is useless without data
  90     if (has_capability('mod/data:managetemplates', $context)) {
  91         if (!record_exists('data_fields','dataid',$data->id)) {      // Brand new database!
  92             redirect($CFG->wwwroot.'/mod/data/field.php?d='.$data->id);  // Redirect to field entry
  93         }
  94     }
  95
  96
  97 /// Check further parameters that set browsing preferences
  98     if (!isset($SESSION->dataprefs)) {
  99         $SESSION->dataprefs = array();
 100     }
 101     if (!isset($SESSION->dataprefs[$data->id])) {
 102         $SESSION->dataprefs[$data->id] = array();
 103         $SESSION->dataprefs[$data->id]['search'] = '';
 104         $SESSION->dataprefs[$data->id]['search_array'] = array();
 105         $SESSION->dataprefs[$data->id]['sort'] = $data->defaultsort;
 106         $SESSION->dataprefs[$data->id]['advanced'] = 0;
 107         $SESSION->dataprefs[$data->id]['order'] = ($data->defaultsortdir == 0) ? 'ASC' : 'DESC';
 108     }
 109
 110     // reset advanced form
 111     if (!is_null(optional_param('resetadv', null, PARAM_RAW))) {
 112         $SESSION->dataprefs[$data->id]['search_array'] = array();
 113         // we need the redirect to cleanup the form state properly
 114         redirect("view.php?id=$cm->id&amp;mode=$mode&amp;search=&amp;advanced=1");
 115     }
 116
 117     $advanced = optional_param('advanced', -1, PARAM_INT);
 118     if ($advanced == -1) {
 119         $advanced = $SESSION->dataprefs[$data->id]['advanced'];
 120     } else {
 121         if (!$advanced) {
 122             // explicitly switched to normal mode - discard all advanced search settings
 123             $SESSION->dataprefs[$data->id]['search_array'] = array();
 124         }
 125         $SESSION->dataprefs[$data->id]['advanced'] = $advanced;
 126     }
 127
 128     $search_array = $SESSION->dataprefs[$data->id]['search_array'];
 129
 130     if (!empty($advanced)) {
 131         $search = '';
 132         $vals = array();
 133         $fields = get_records('data_fields', 'dataid', $data->id);
 134
 135         //Added to ammend paging error. This error would occur when attempting to go from one page of advanced
 136         //search results to another.  All fields were reset in the page transfer, and there was no way of determining
 137         //whether or not the user reset them.  This would cause a blank search to execute whenever the user attempted
 138         //to see any page of results past the first.
 139         //This fix works as follows:
 140         //$paging flag is set to false when page 0 of the advanced search results is viewed for the first time.
 141         //Viewing any page of results after page 0 passes the false $paging flag though the URL (see line 523) and the
 142         //execution falls through to the second condition below, allowing paging to be set to true.
 143         //Paging remains true and keeps getting passed though the URL until a new search is performed
 144         //(even if page 0 is revisited).
 145         //A false $paging flag generates advanced search results based on the fields input by the user.
 146         //A true $paging flag generates davanced search results from the $SESSION global.
 147
 148         $paging = optional_param('paging', NULL, PARAM_BOOL);
 149         if($page == 0 && !isset($paging)) {
 150             $paging = false;
 151         }
 152         else {
 153             $paging = true;
 154         }
 155         if (!empty($fields)) {
 156             foreach($fields as $field) {
 157                 $searchfield = data_get_field_from_id($field->id, $data);
 158                 //Get field data to build search sql with.  If paging is false, get from user.
 159                 //If paging is true, get data from $search_array which is obtained from the $SESSION (see line 116).
 160                 if(!$paging) {
 161                     $val = $searchfield->parse_search_field();
 162                 } else {
 163                     //Set value from session if there is a value @ the required index.
 164                     if (isset($search_array[$field->id])) {
 165                         $val = $search_array[$field->id]->data;
 166                     } else {             //If there is not an entry @ the required index, set value to blank.
 167                         $val = '';
 168                     }
 169                 }
 170                 if (!empty($val)) {
 171                     $search_array[$field->id] = new object();
 172                     $search_array[$field->id]->sql  = $searchfield->generate_sql('c'.$field->id, $val);
 173                     $search_array[$field->id]->data = $val;
 174                     $vals[] = $val;
 175                 } else {
 176                     // clear it out
 177                     unset($search_array[$field->id]);
 178                 }
 179             }
 180         }
 181
 182         if (!$paging) {
 183             // name searching
 184             $fn = optional_param('u_fn', '', PARAM_NOTAGS);
 185             $ln = optional_param('u_ln', '', PARAM_NOTAGS);
 186         } else {
 187             $fn = isset($search_array[DATA_FIRSTNAME]) ? $search_array[DATA_FIRSTNAME]->data : '';
 188             $ln = isset($search_array[DATA_LASTNAME]) ? $search_array[DATA_LASTNAME]->data : '';
 189         }
 190         if (!empty($fn)) {
 191             $search_array[DATA_FIRSTNAME] = new object();
 192             $search_array[DATA_FIRSTNAME]->sql   = '';
 193             $search_array[DATA_FIRSTNAME]->field = 'u.firstname';
 194             $search_array[DATA_FIRSTNAME]->data  = $fn;
 195             $vals[] = $fn;
 196         } else {
 197             unset($search_array[DATA_FIRSTNAME]);
 198         }
 199         if (!empty($ln)) {
 200             $search_array[DATA_LASTNAME] = new object();
 201             $search_array[DATA_LASTNAME]->sql   = '';
 202             $search_array[DATA_LASTNAME]->field = 'u.lastname';
 203             $search_array[DATA_LASTNAME]->data  = $ln;
 204             $vals[] = $ln;
 205         } else {
 206             unset($search_array[DATA_LASTNAME]);
 207         }
 208
 209         $SESSION->dataprefs[$data->id]['search_array'] = $search_array;     // Make it sticky
 210
 211         // in case we want to switch to simple search later - there might be multiple values there ;-)
 212         if ($vals) {
 213             $val = reset($vals);
 214             if (is_string($val)) {
 215                 $search = $val;
 216             }
 217         }
 218
 219     } else {
 220         $search = optional_param('search', $SESSION->dataprefs[$data->id]['search'], PARAM_NOTAGS);
 221         //Paging variable not used for standard search. Set it to null.
 222         $paging = NULL;
 223     }
 224
 225     // Disable search filters if $filter is not true:
 226     if (! $filter) {
 227         $search = '';
 228     }
 229
 230     $textlib = textlib_get_instance();
 231     if ($textlib->strlen($search) < 2) {
 232         $search = '';
 233     }
 234     $SESSION->dataprefs[$data->id]['search'] = $search;   // Make it sticky
 235
 236     $sort = optional_param('sort', $SESSION->dataprefs[$data->id]['sort'], PARAM_INT);
 237     $SESSION->dataprefs[$data->id]['sort'] = $sort;       // Make it sticky
 238
 239     $order = (optional_param('order', $SESSION->dataprefs[$data->id]['order'], PARAM_ALPHA) == 'ASC') ? 'ASC': 'DESC';
 240     $SESSION->dataprefs[$data->id]['order'] = $order;     // Make it sticky
 241
 242
 243     $oldperpage = get_user_preferences('data_perpage_'.$data->id, 10);
 244     $perpage = optional_param('perpage', $oldperpage, PARAM_INT);
 245
 246     if ($perpage < 2) {
 247         $perpage = 2;
 248     }
 249     if ($perpage != $oldperpage) {
 250         set_user_preference('data_perpage_'.$data->id, $perpage);
 251     }
 252
 253     add_to_log($course->id, 'data', 'view', "view.php?id=$cm->id", $data->id, $cm->id);
 254
 255
 256 // Initialize $PAGE, compute blocks
 257     $PAGE       = page_create_instance($data->id);
 258     $pageblocks = blocks_setup($PAGE);
 259     $blocks_preferred_width = bounded_number(180, blocks_preferred_width($pageblocks[BLOCK_POS_LEFT]), 210);
 260
 261     if (($edit != -1) and $PAGE->user_allowed_editing()) {
 262         $USER->editing = $edit;
 263     }
 264
 265 /// RSS and CSS and JS meta
 266     $meta = '';
 267     if (!empty($CFG->enablerssfeeds) && !empty($CFG->data_enablerssfeeds) && $data->rssarticles > 0) {
 268         $rsspath = rss_get_url($course->id, $USER->id, 'data', $data->id);
 269         $meta .= '<link rel="alternate" type="application/rss+xml" ';
 270         $meta .= 'title ="'. format_string($course->shortname) .': %fullname%" href="'.$rsspath.'" />';
 271     }
 272     if ($data->csstemplate) {
 273         $meta .= '<link rel="stylesheet" type="text/css" href="'.$CFG->wwwroot.'/mod/data/css.php?d='.$data->id.'" /> ';
 274     }
 275     if ($data->jstemplate) {
 276         $meta .= '<script type="text/javascript" src="'.$CFG->wwwroot.'/mod/data/js.php?d='.$data->id.'"></script>';
 277     }
 278
 279
 280 /// Print the page header
 281     $PAGE->print_header($course->shortname.': %fullname%', '', $meta);
 282
 283
 284 /// If we have blocks, then print the left side here
 285     if (!empty($CFG->showblocksonmodpages)) {
 286         echo '<table id="layout-table"><tr>';
 287         if ((blocks_have_content($pageblocks, BLOCK_POS_LEFT) || $PAGE->user_is_editing())) {
 288             echo '<td style="width: '.$blocks_preferred_width.'px;" id="left-column">';
 289             print_container_start();
 290             blocks_print_group($PAGE, $pageblocks, BLOCK_POS_LEFT);
 291             print_container_end();
 292             echo '</td>';
 293         }
 294         echo '<td id="middle-column">';
 295         print_container_start();
 296     }
 297
 298 /// Check to see if groups are being used here
 299     $returnurl = 'view.php?d='.$data->id.'&amp;search='.s($search).'&amp;sort='.s($sort).'&amp;order='.s($order).'&amp;';
 300     groups_print_activity_menu($cm, $returnurl);
 301     $currentgroup = groups_get_activity_group($cm);
 302     $groupmode = groups_get_activity_groupmode($cm);
 303
 304     // deletect entries not approved yet and show hint instead of not found error
 305     if ($record and $data->approval and !$record->approved and $record->userid != $USER->id and !has_capability('mod/data:manageentries', $context)) {
 306         if (!$currentgroup or $record->groupid == $currentgroup or $record->groupid == 0) {
 307             print_error('notapproved', 'data');
 308         }
 309     }
 310
 311     print_heading(format_string($data->name));
 312
 313     // Do we need to show a link to the RSS feed for the records?
 314     if (!empty($CFG->enablerssfeeds) && !empty($CFG->data_enablerssfeeds) && $data->rssarticles > 0) {
 315         echo '<div style="float:right;">';
 316         rss_print_link($course->id, $USER->id, 'data', $data->id, get_string('rsstype'));
 317         echo '</div>';
 318         echo '<div style="clear:both;"></div>';
 319     }
 320
 321     if ($data->intro and empty($page) and empty($record) and $mode != 'single') {
 322         $options = new object();
 323         $options->noclean = true;
 324         print_box(format_text($data->intro, FORMAT_MOODLE, $options), 'generalbox', 'intro');
 325     }
 326
 327 /// Delete any requested records
 328
 329     if ($delete && confirm_sesskey() && (has_capability('mod/data:manageentries', $context) or data_isowner($delete))) {
 330         if ($confirm = optional_param('confirm',0,PARAM_INT)) {
 331             if ($deleterecord = get_record('data_records', 'id', $delete)) {   // Need to check this is valid
 332                 if ($deleterecord->dataid == $data->id) {                       // Must be from this database
 333                     if ($contents = get_records('data_content','recordid', $deleterecord->id)) {
 334                         foreach ($contents as $content) {  // Delete files or whatever else this field allows
 335                             if ($field = data_get_field_from_id($content->fieldid, $data)) { // Might not be there
 336                                 $field->delete_content($content->recordid);
 337                             }
 338                         }
 339                     }
 340                     delete_records('data_content','recordid', $deleterecord->id);
 341                     delete_records('data_records','id', $deleterecord->id);
 342
 343                     add_to_log($course->id, 'data', 'record delete', "view.php?id=$cm->id", $data->id, $cm->id);
 344
 345                     notify(get_string('recorddeleted','data'), 'notifysuccess');
 346                 }
 347             }
 348
 349         } else {   // Print a confirmation page
 350             if ($deleterecord = get_record('data_records', 'id', $delete)) {   // Need to check this is valid
 351                 if ($deleterecord->dataid == $data->id) {                       // Must be from this database
 352                     notice_yesno(get_string('confirmdeleterecord','data'),
 353                             'view.php?d='.$data->id.'&amp;delete='.$delete.'&amp;confirm=1&amp;sesskey='.sesskey(),
 354                             'view.php?d='.$data->id);
 355
 356                     $records[] = $deleterecord;
 357                     echo data_print_template('singletemplate', $records, $data, '', 0, true);
 358
 359                     print_footer($course);
 360                     exit;
 361                 }
 362             }
 363         }
 364     }
 365
 366
 367
 368 /// Print the tabs
 369
 370     if ($record or $mode == 'single') {
 371         $currenttab = 'single';
 372     } elseif($mode == 'asearch') {
 373         $currenttab = 'asearch';
 374     }
 375     else {
 376         $currenttab = 'list';
 377     }
 378     include('tabs.php');
 379
 380     if ($mode == 'asearch') {
 381         $maxcount = 0;
 382
 383     } else {
 384     /// Approve any requested records
 385
 386         $approvecap = has_capability('mod/data:approve', $context);
 387
 388         if ($approve && confirm_sesskey() && $approvecap) {
 389             if ($approverecord = get_record('data_records', 'id', $approve)) {   // Need to check this is valid
 390                 if ($approverecord->dataid == $data->id) {                       // Must be from this database
 391                     $newrecord->id = $approverecord->id;
 392                     $newrecord->approved = 1;
 393                     if (update_record('data_records', $newrecord)) {
 394                         notify(get_string('recordapproved','data'), 'notifysuccess');
 395                     }
 396                 }
 397             }
 398         }
 399
 400         $numentries = data_numentries($data);
 401     /// Check the number of entries required against the number of entries already made (doesn't apply to teachers)
 402         if ($data->requiredentries > 0 && $numentries < $data->requiredentries && !has_capability('mod/data:manageentries', $context)) {
 403             $data->entriesleft = $data->requiredentries - $numentries;
 404             $strentrieslefttoadd = get_string('entrieslefttoadd', 'data', $data);
 405             notify($strentrieslefttoadd);
 406         }
 407
 408     /// Check the number of entries required before to view other participant's entries against the number of entries already made (doesn't apply to teachers)
 409         $requiredentries_allowed = true;
 410         if ($data->requiredentriestoview > 0 && $numentries < $data->requiredentriestoview && !has_capability('mod/data:manageentries', $context)) {
 411             $data->entrieslefttoview = $data->requiredentriestoview - $numentries;
 412             $strentrieslefttoaddtoview = get_string('entrieslefttoaddtoview', 'data', $data);
 413             notify($strentrieslefttoaddtoview);
 414             $requiredentries_allowed = false;
 415         }
 416
 417     /// setup group and approve restrictions
 418         if (!$approvecap && $data->approval) {
 419             if (isloggedin()) {
 420                 $approveselect = ' AND (r.approved=1 OR r.userid='.$USER->id.') ';
 421             } else {
 422                 $approveselect = ' AND r.approved=1 ';
 423             }
 424         } else {
 425             $approveselect = ' ';
 426         }
 427
 428         if ($currentgroup) {
 429             $groupselect = " AND (r.groupid = '$currentgroup' OR r.groupid = 0)";
 430         } else {
 431             $groupselect = ' ';
 432         }
 433
 434         $ilike = sql_ilike(); //Be case-insensitive
 435
 436         // Init some variables to be used by advanced search
 437         $advsearchselect = '';
 438         $advwhere        = '';
 439         $advtables       = '';
 440
 441     /// Find the field we are sorting on
 442         if ($sort <= 0 or !$sortfield = data_get_field_from_id($sort, $data)) {
 443
 444             switch ($sort) {
 445                 case DATA_LASTNAME:
 446                     $ordering = "u.lastname $order, u.firstname $order";
 447                     break;
 448                 case DATA_FIRSTNAME:
 449                     $ordering = "u.firstname $order, u.lastname $order";
 450                     break;
 451                 case DATA_APPROVED:
 452                     $ordering = "r.approved $order, r.timecreated $order";
 453                     break;
 454                 case DATA_TIMEMODIFIED:
 455                     $ordering = "r.timemodified $order";
 456                     break;
 457                 case DATA_TIMEADDED:
 458                 default:
 459                     $sort     = 0;
 460                     $ordering = "r.timecreated $order";
 461             }
 462
 463             $what = ' DISTINCT r.id, r.approved, r.timecreated, r.timemodified, r.userid, u.firstname, u.lastname';
 464             $count = ' COUNT(DISTINCT c.recordid) ';
 465             $tables = $CFG->prefix.'data_content c,'.$CFG->prefix.'data_records r,'.$CFG->prefix.'data_content cs, '.$CFG->prefix.'user u ';
 466             $where =  'WHERE c.recordid = r.id
 467                          AND r.dataid = '.$data->id.'
 468                          AND r.userid = u.id
 469                          AND cs.recordid = r.id ';
 470             $sortorder = ' ORDER BY '.$ordering.', r.id ASC ';
 471             $searchselect = '';
 472
 473             // If requiredentries is not reached, only show current user's entries
 474             if (!$requiredentries_allowed) {
 475                 $where .= ' AND u.id = ' . $USER->id;
 476             }
 477
 478             if (!empty($advanced)) {                                                  //If advanced box is checked.
 479                 foreach($search_array as $key => $val) {                              //what does $search_array hold?
 480                     if ($key == DATA_FIRSTNAME or $key == DATA_LASTNAME) {
 481                         $searchselect .= " AND $val->field $ilike '%{$val->data}%'";
 482                         continue;
 483                     }
 484                     $advtables .= ', '.$CFG->prefix.'data_content c'.$key.' ';
 485                     $advwhere .= ' AND c'.$key.'.recordid = r.id';
 486                     $advsearchselect .= ' AND ('.$val->sql.') ';
 487                 }
 488             } else if ($search) {
 489                 $searchselect = " AND (cs.content $ilike '%$search%' OR u.firstname $ilike '%$search%' OR u.lastname $ilike '%$search%' ) ";
 490             } else {
 491                 $searchselect = ' ';
 492             }
 493
 494         } else {
 495
 496             $sortcontent = $sortfield->get_sort_field();
 497             $sortcontentfull = $sortfield->get_sort_sql('c.'.$sortcontent);
 498
 499             $what = ' DISTINCT r.id, r.approved, r.timecreated, r.timemodified, r.userid, u.firstname, u.lastname, '.sql_compare_text($sortcontentfull).' AS _order ';
 500             $count = ' COUNT(DISTINCT c.recordid) ';
 501             $tables = $CFG->prefix.'data_content c,'.$CFG->prefix.'data_records r,'.$CFG->prefix.'data_content cs, '.$CFG->prefix.'user u ';
 502             $where =  'WHERE c.recordid = r.id
 503                          AND c.fieldid = '.$sort.'
 504                          AND r.dataid = '.$data->id.'
 505                          AND r.userid = u.id
 506                          AND cs.recordid = r.id ';
 507             $sortorder = ' ORDER BY _order '.$order.' , r.id ASC ';
 508             $searchselect = '';
 509
 510             // If requiredentries is not reached, only show current user's entries
 511             if (!$requiredentries_allowed) {
 512                 $where .= ' AND u.id = ' . $USER->id;
 513             }
 514
 515             if (!empty($advanced)) {                                                  //If advanced box is checked.
 516                 foreach($search_array as $key => $val) {                              //what does $search_array hold?
 517                     if ($key == DATA_FIRSTNAME or $key == DATA_LASTNAME) {
 518                         $searchselect .= " AND $val->field $ilike '%{$val->data}%'";
 519                         continue;
 520                     }
 521                     $advtables .= ', '.$CFG->prefix.'data_content c'.$key.' ';
 522                     $advwhere .= ' AND c'.$key.'.recordid = r.id AND c'.$key.'.fieldid = '.$key;
 523                     $advsearchselect .= ' AND ('.$val->sql.') ';
 524                 }
 525             } else if ($search) {
 526                 $searchselect = " AND (cs.content $ilike '%$search%' OR u.firstname $ilike '%$search%' OR u.lastname $ilike '%$search%' ) ";
 527             } else {
 528                 $searchselect = ' ';
 529             }
 530         }
 531
 532     /// To actually fetch the records
 533
 534         $fromsql    = "FROM $tables $advtables $where $advwhere $groupselect $approveselect $searchselect $advsearchselect";
 535         $sqlselect  = "SELECT $what $fromsql $sortorder";
 536         $sqlcount   = "SELECT $count $fromsql";   // Total number of records when searching
 537         $sqlrids    = "SELECT tmp.id FROM ($sqlselect) tmp";
 538         $sqlmax     = "SELECT $count FROM $tables $where $groupselect $approveselect"; // number of all recoirds user may see
 539
 540     /// Work out the paging numbers and counts
 541
 542         $totalcount = count_records_sql($sqlcount);
 543         if (empty($searchselect) && empty($advsearchselect)) {
 544             $maxcount = $totalcount;
 545         } else {
 546             $maxcount = count_records_sql($sqlmax);
 547         }
 548
 549         if ($record) {     // We need to just show one, so where is it in context?
 550             $nowperpage = 1;
 551             $mode = 'single';
 552
 553             $page = 0;
 554             if ($allrecordids = get_records_sql($sqlrids)) {
 555                 $allrecordids = array_keys($allrecordids);
 556                 $page = (int)array_search($record->id, $allrecordids);
 557                 unset($allrecordids);
 558             }
 559
 560         } else if ($mode == 'single') {  // We rely on ambient $page settings
 561             $nowperpage = 1;
 562
 563         } else {
 564             $nowperpage = $perpage;
 565         }
 566
 567     /// Get the actual records
 568
 569         if (!$records = get_records_sql($sqlselect, $page * $nowperpage, $nowperpage)) {
 570             // Nothing to show!
 571             if ($record) {         // Something was requested so try to show that at least (bug 5132)
 572                 if (has_capability('mod/data:manageentries', $context) || empty($data->approval) ||
 573                          $record->approved || (isloggedin() && $record->userid == $USER->id)) {
 574                     if (!$currentgroup || $record->groupid == $currentgroup || $record->groupid == 0) {
 575                         // OK, we can show this one
 576                         $records = array($record->id => $record);
 577                         $totalcount = 1;
 578                     }
 579                 }
 580             }
 581         }
 582
 583         if (empty($records)) {
 584             if ($maxcount){
 585                 $a = new object();
 586                 $a->max = $maxcount;
 587                 $a->reseturl = "view.php?id=$cm->id&amp;mode=$mode&amp;search=&amp;advanced=0";
 588                 notify(get_string('foundnorecords','data', $a));
 589             } else {
 590                 notify(get_string('norecords','data'));
 591             }
 592
 593         } else { //  We have some records to print
 594
 595             if ($maxcount != $totalcount) {
 596                 $a = new object();
 597                 $a->num = $totalcount;
 598                 $a->max = $maxcount;
 599                 $a->reseturl = "view.php?id=$cm->id&amp;mode=$mode&amp;search=&amp;advanced=0";
 600                 notify(get_string('foundrecords', 'data', $a), 'notifysuccess');
 601             }
 602
 603             if ($mode == 'single') {                  // Single template
 604                 $baseurl = 'view.php?d=' . $data->id . '&amp;mode=single&amp;';
 605                 if (!empty($search)) {
 606                     $baseurl .= 'filter=1&amp;';
 607                 }
 608                 print_paging_bar($totalcount, $page, $nowperpage, $baseurl, $pagevar='page');
 609
 610                 if (empty($data->singletemplate)){
 611                     notify(get_string('nosingletemplate','data'));
 612                     data_generate_default_template($data, 'singletemplate', 0, false, false);
 613                 }
 614
 615                 data_print_template('singletemplate', $records, $data, $search, $page);
 616
 617                 print_paging_bar($totalcount, $page, $nowperpage, $baseurl, $pagevar='page');
 618
 619             } else {                                  // List template
 620                 $baseurl = 'view.php?d='.$data->id.'&amp;';
 621                 //send the advanced flag through the URL so it is remembered while paging.
 622                 $baseurl .= 'advanced='.$advanced.'&amp;';
 623                 if (!empty($search)) {
 624                     $baseurl .= 'filter=1&amp;';
 625                 }
 626                 //pass variable to allow determining whether or not we are paging through results.
 627                 $baseurl .= 'paging='.$paging.'&amp;';
 628
 629                 print_paging_bar($totalcount, $page, $nowperpage, $baseurl, $pagevar='page');
 630
 631                 if (empty($data->listtemplate)){
 632                     notify(get_string('nolisttemplate','data'));
 633                     data_generate_default_template($data, 'listtemplate', 0, false, false);
 634                 }
 635                 echo $data->listtemplateheader;
 636                 data_print_template('listtemplate', $records, $data, $search, $page);
 637                 echo $data->listtemplatefooter;
 638
 639                 print_paging_bar($totalcount, $page, $nowperpage, $baseurl, $pagevar='page');
 640             }
 641
 642         }
 643     }
 644
 645     $search = trim($search);
 646     if (empty($records)) {
 647         $records = array();
 648     }
 649
 650     //Advanced search form doesn't make sense for single (redirects list view)
 651     if (($maxcount || $mode == 'asearch') && $mode != 'single') {
 652         data_print_preference_form($data, $perpage, $search, $sort, $order, $search_array, $advanced, $mode);
 653     }
 654
 655 /// If we have blocks, then print the left side here
 656     if (!empty($CFG->showblocksonmodpages)) {
 657         print_container_end();
 658         echo '</td>';   // Middle column
 659         if ((blocks_have_content($pageblocks, BLOCK_POS_RIGHT) || $PAGE->user_is_editing())) {
 660             echo '<td style="width: '.$blocks_preferred_width.'px;" id="right-column">';
 661             print_container_start();
 662             blocks_print_group($PAGE, $pageblocks, BLOCK_POS_RIGHT);
 663             print_container_end();
 664             echo '</td>';
 665         }
 666         echo '</tr></table>';
 667     }
 668
 669     print_footer($course);
 670 ?>