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StudentQuiz: make the SQ working with Moodle 4.3
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hieuvu
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Dec 14, 2023
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,251 @@ | ||
| <?php | ||
| // This file is part of Moodle - http://moodle.org/ | ||
| // | ||
| // Moodle is free software: you can redistribute it and/or modify | ||
| // it under the terms of the GNU General Public License as published by | ||
| // the Free Software Foundation, either version 3 of the License, or | ||
| // (at your option) any later version. | ||
| // | ||
| // Moodle is distributed in the hope that it will be useful, | ||
| // but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| // GNU General Public License for more details. | ||
| // | ||
| // You should have received a copy of the GNU General Public License | ||
| // along with Moodle. If not, see <http://www.gnu.org/licenses/>. | ||
|
|
||
| /** | ||
| * Modify stuff conditionally | ||
| * | ||
| * @package mod_studentquiz | ||
| * @copyright 2017 HSR (http://www.hsr.ch) | ||
| * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later | ||
| */ | ||
|
|
||
| namespace mod_studentquiz\condition; | ||
| defined('MOODLE_INTERNAL') || die(); | ||
|
|
||
| require_once($CFG->dirroot . '/mod/studentquiz/classes/local/db.php'); | ||
| use mod_studentquiz\local\db; | ||
|
|
||
| /** | ||
| * Conditionally modify question bank queries. | ||
| * | ||
| * @copyright 2017 HSR (http://www.hsr.ch) | ||
| * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later | ||
| */ | ||
| class studentquiz_condition_pre_43 extends \core_question\bank\search\condition { | ||
|
|
||
| /** | ||
| * Due to fix_sql_params not accepting repeated use of named params, | ||
| * we need to get unique names for params that will be used more than | ||
| * once... | ||
| * | ||
| * init() from parent class duplicated here as we can't call it directly | ||
| * (private) :-P | ||
| * | ||
| * where() overridden with call to init() followed by call to parent | ||
| * where()... | ||
| * | ||
| * params() always returns $this->params, which doesn't change between | ||
| * calls to get_in_or_equal, so don't need to fix anything there. | ||
| * Which is fortunate, as there'd be no way to keep where() and params() | ||
| * in sync. | ||
| * | ||
| * @param stdClass $cm | ||
| * @param stdClass $filterform | ||
| * @param \mod_studentquiz_report $report | ||
| * @param stdClass $studentquiz | ||
| */ | ||
| public function __construct($cm, $filterform, $report, $studentquiz) { | ||
| $this->cm = $cm; | ||
| $this->filterform = $filterform; | ||
| $this->tests = array(); | ||
| $this->params = array(); | ||
| $this->report = $report; | ||
| $this->studentquiz = $studentquiz; | ||
| $this->init(); | ||
| } | ||
|
|
||
| /** @var stdClass */ | ||
| protected $cm; | ||
|
|
||
| /** @var stdClass $filterform Search condition depends on filterform */ | ||
| protected $filterform; | ||
|
|
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| /** @var stdClass */ | ||
| protected $studentquiz; | ||
|
|
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| /** @var \mod_studentquiz_report */ | ||
| protected $report; | ||
|
|
||
| /** @var array */ | ||
| protected $tests; | ||
|
|
||
| /** @var array */ | ||
| protected $params; | ||
|
|
||
| /** @var bool */ | ||
| protected $isfilteractive = false; | ||
|
|
||
| /** | ||
| * Whether the filter is active. | ||
| * @return bool | ||
| */ | ||
| public function is_filter_active() { | ||
| return $this->isfilteractive; | ||
| } | ||
|
|
||
| /** | ||
| * Initialize. | ||
| */ | ||
| protected function init() { | ||
| if ($adddata = $this->filterform->get_data()) { | ||
|
|
||
| $this->tests = array(); | ||
| $this->params = array(); | ||
|
|
||
| foreach ($this->filterform->get_fields() as $field) { | ||
|
|
||
| // Validate input. | ||
| $data = $field->check_data($adddata); | ||
|
|
||
| // If input is valid, at least one filter was activated. | ||
| if ($data === false) { | ||
| continue; | ||
| } else { | ||
| $this->isfilteractive = true; | ||
| } | ||
|
|
||
| $sqldata = $field->get_sql_filter($data); | ||
|
|
||
| // Disable filtering by firstname if anonymized. | ||
| if ($field->_name == 'firstname' && !(mod_studentquiz_check_created_permission($this->cm->id) || | ||
| !$this->report->is_anonymized())) { | ||
| continue; | ||
| } | ||
|
|
||
| // Disable filtering by firstname if anonymized. | ||
| if ($field->_name == 'lastname' && !(mod_studentquiz_check_created_permission($this->cm->id) || | ||
| !$this->report->is_anonymized())) { | ||
| continue; | ||
| } | ||
|
|
||
| // Respect leading and ending ',' for the tagarray as provided by tag_column.php. | ||
| if ($field->_name == 'tagarray') { | ||
| foreach ($sqldata[1] as $key => $value) { | ||
| if (!empty($value)) { | ||
| $sqldata[1][$key] = "%,$value,%"; | ||
| } else { | ||
| $sqldata[0] = "$field->_name IS NULL"; | ||
| } | ||
| } | ||
| } | ||
|
|
||
| // TODO: cleanup that buggy filter function to remove this! | ||
| // The user_filter_checkbox class has a buggy get_sql_filter function. | ||
| if ($field->_name == 'createdby') { | ||
| $sqldata = array($field->_name . ' = ' . intval($data['value']), array()); | ||
| } | ||
|
|
||
| if (is_array($sqldata)) { | ||
| $sqldata[0] = str_replace($field->_name, $this->get_sql_field($field->_name) | ||
| , $sqldata[0]); | ||
| $sqldata[0] = $this->get_special_sql($sqldata[0], $field->_name); | ||
| $this->tests[] = '((' . $sqldata[0] . '))'; | ||
| $this->params = array_merge($this->params, $sqldata[1]); | ||
| } | ||
| } | ||
| } | ||
| } | ||
|
|
||
| /** | ||
| * Replaces special fields with additional sql instructions in the query | ||
| * | ||
| * @param string $sqldata the sql query | ||
| * @param string $name affected field name | ||
| * @return string modified sql query | ||
| */ | ||
| private function get_special_sql($sqldata, $name) { | ||
| if (substr($sqldata, 0, 12) === 'mydifficulty') { | ||
| return str_replace('mydifficulty', '(CASE WHEN sp.attempts > 0 THEN | ||
| ROUND(1 - (CAST(sp.correctattempts AS DECIMAL) / CAST(sp.attempts AS DECIMAL)), 2) | ||
| ELSE 0 | ||
| END)', $sqldata); | ||
| } | ||
| if ($name == "onlynew") { | ||
| return str_replace('myattempts', 'sp.attempts', $sqldata); | ||
| } | ||
| return $sqldata; | ||
| } | ||
|
|
||
| /** | ||
| * Replaces fields with additional sql instructions in place of the field | ||
| * | ||
| * @param string $name affected field name | ||
| * @return string modified sql query | ||
| */ | ||
| private function get_sql_field($name) { | ||
| if (substr($name, 0, 12) === 'mydifficulty') { | ||
| return str_replace('mydifficulty', '(CASE WHEN sp.attempts > 0 THEN | ||
| ROUND(1 - (CAST(sp.correctattempts AS DECIMAL) / CAST(sp.attempts AS DECIMAL)), 2) | ||
| ELSE 0 | ||
| END)', $name); | ||
| } | ||
| if (substr($name, 0, 10) === 'myattempts') { | ||
| return 'sp.attempts'; | ||
| } | ||
| return $this->get_sql_table_prefix($name) . $name; | ||
| } | ||
|
|
||
|
|
||
| /** | ||
| * Get the sql table prefix | ||
| * | ||
| * @param string $name | ||
| * @return string return sql prefix | ||
| */ | ||
| private function get_sql_table_prefix($name) { | ||
| switch($name){ | ||
| case 'difficultylevel': | ||
| return 'dl.'; | ||
| case 'rate': | ||
| return 'vo.'; | ||
| case 'publiccomment': | ||
| return 'copub.'; | ||
| case 'state': | ||
| return 'sqq.'; | ||
| case 'firstname': | ||
| case 'lastname': | ||
| return 'uc.'; | ||
| case 'lastanswercorrect': | ||
| return 'sp.'; | ||
| case 'mydifficulty': | ||
| return 'mydiffs.'; | ||
| case 'myattempts': | ||
| return 'myatts.'; | ||
| case 'myrate': | ||
| return 'myrate.'; | ||
| case 'tagarray': | ||
| return 'tags.'; | ||
| default; | ||
| return 'q.'; | ||
| } | ||
| } | ||
|
|
||
| /** | ||
| * Provide SQL fragment to be ANDed into the WHERE clause to filter which questions are shown. | ||
| * @return string SQL fragment. Must use named parameters. | ||
| */ | ||
| public function where() { | ||
| return implode(' AND ', $this->tests); | ||
| } | ||
|
|
||
| /** | ||
| * Return parameters to be bound to the above WHERE clause fragment. | ||
| * @return array parameter name => value. | ||
| */ | ||
| public function params() { | ||
| return $this->params; | ||
| } | ||
| } |
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