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- <?php
- /*
- DOKEOS - elearning and course management software
- For a full list of contributors, see documentation/credits.html
- This program 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 2
- of the License, or (at your option) any later version.
- See "documentation/licence.html" more details.
- Contact:
- Dokeos
- Rue des Palais 44 Paleizenstraat
- B-1030 Brussels - Belgium
- Tel. +32 (2) 211 34 56
- */
- /**
- * @package dokeos.survey
- * @author unknown, the initial survey that did not make it in 1.8 because of bad code
- * @author Patrick Cool <patrick.cool@UGent.be>, Ghent University: cleanup, refactoring and rewriting large parts of the code
- * @version $Id: survey_list.php 13922 2007-12-04 23:20:19Z yannoo $
- *
- * @todo use quickforms for the forms
- */
- // name of the language file that needs to be included
- $language_file = 'survey';
- // including the global dokeos file
- require ('../inc/global.inc.php');
- // including additional libraries
- //require_once (api_get_path(LIBRARY_PATH)."/survey.lib.php");
- require_once('survey.lib.php');
- require_once (api_get_path(LIBRARY_PATH)."/course.lib.php");
- /** @todo this has to be moved to a more appropriate place (after the display_header of the code)*/
- if (!api_is_allowed_to_edit())
- {
- Display :: display_header();
- Display :: display_error_message(get_lang('NotAllowed'), false);
- Display :: display_footer();
- exit;
- }
- // Database table definitions
- $table_survey = Database :: get_course_table(TABLE_SURVEY);
- $table_survey_question = Database :: get_course_table(TABLE_SURVEY_QUESTION);
- $table_course = Database :: get_main_table(TABLE_MAIN_COURSE);
- $table_user = Database :: get_main_table(TABLE_MAIN_USER);
- // language variables
- if (isset ($_GET['search']) && $_GET['search'] == 'advanced')
- {
- $interbreadcrumb[] = array ('url' => 'survey_list.php', 'name' => get_lang('SurveyList'));
- $tool_name = get_lang('SearchASurvey');
- }
- else
- {
- $tool_name = get_lang('SurveyList');
- }
- // Header
- Display :: display_header($tool_name);
- //api_display_tool_title($tool_name);
- // Action handling: searching
- if (isset ($_GET['search']) AND $_GET['search'] == 'advanced')
- {
- display_survey_search_form();
- }
- // Action handling: deleting a survey
- if (isset($_GET['action']) AND $_GET['action'] == 'delete' AND isset($_GET['survey_id']) AND is_numeric($_GET['survey_id']))
- {
- // getting the information of the survey (used for when the survey is shared)
- $survey_data = survey_manager::get_survey($_GET['survey_id']);
- // if the survey is shared => also delete the shared content
- if (is_numeric($survey_data['survey_share']))
- {
- survey_manager::delete_survey($survey_data['survey_share'], true);
- }
- $return = survey_manager :: delete_survey($_GET['survey_id']);
- if ($return)
- {
- Display :: display_confirmation_message(get_lang('SurveyDeleted'), false);
- }
- else
- {
- Display :: display_error_message(get_lang('ErrorOccurred'), false);
- }
- }
- if(isset($_GET['action']) && $_GET['action'] == 'empty')
- {
- $return = survey_manager::empty_survey(intval($_GET['survey_id']));
- if ($return)
- {
- Display :: display_confirmation_message(get_lang('SurveyEmptied'), false);
- }
- else
- {
- Display :: display_error_message(get_lang('ErrorOccurred'), false);
- }
- }
- // Action handling: performing the same action on multiple surveys
- if ($_POST['action'])
- {
- if (is_array($_POST['id']))
- {
- foreach ($_POST['id'] as $key=>$value)
- {
- // getting the information of the survey (used for when the survey is shared)
- $survey_data = survey_manager::get_survey($value);
- // if the survey is shared => also delete the shared content
- if (is_numeric($survey_data['survey_share']))
- {
- survey_manager::delete_survey($survey_data['survey_share'], true);
- }
- // delete the actual survey
- survey_manager::delete_survey($value);
- }
- Display :: display_confirmation_message(get_lang('SurveysDeleted'), false);
- }
- else
- {
- Display :: display_error_message(get_lang('NoSurveysSelected'), false);
- }
- }
- // Action links
- echo '<a href="create_new_survey.php?'.api_get_cidreq().'&action=add">'.get_lang('CreateNewSurvey').'</a> | ';
- //echo '<a href="survey_all_courses.php">'.get_lang('CreateExistingSurvey').'</a> | ';
- echo '<a href="'.api_get_self().'?'.api_get_cidreq().'&search=advanced">'.get_lang('Search').'</a>';
- // Main content
- display_survey_list();
- // Footer
- Display :: display_footer();
- /**
- * This function displays the form for searching a survey
- *
- * @return html code
- *
- * @author Patrick Cool <patrick.cool@UGent.be>, Ghent University
- * @version January 2007
- *
- * @todo use quickforms
- * @todo consider moving this to surveymanager.inc.lib.php
- */
- function display_survey_search_form()
- {
- echo '<form method="get" action="survey_list.php?search=advanced">';
- echo '<table>
- <tr>
- <td>'.get_lang('Title').'</td>
- <td><input type="text" name="keyword_title"/></td>
- </tr>
- <tr>
- <td>'.get_lang('Code').'</td>
- <td><input type="text" name="keyword_code"/></td>
- </tr>
- <tr>
- <td>'.get_lang('Language').'</td>
- <td>
- <select name="keyword_language"><option value="%">'.get_lang('All').'</option>';
- $languages = api_get_languages();
- foreach ($languages['name'] as $index => $name)
- {
- echo '<option value="'.$languages['folder'][$index].'">'.$name.'</option>';
- }
- echo ' </select>
- </td>
- </tr>
- <tr>
- <td> </td>
- <td><input type="submit" name="do_search" value="'.get_lang('Ok').'"/></td>
- </tr>
- </table>
- </form>';
- }
- /**
- * This function displays the sortable table with all the surveys
- *
- * @return html code
- *
- * @author Patrick Cool <patrick.cool@UGent.be>, Ghent University
- * @version January 2007
- */
- function display_survey_list()
- {
- $parameters = array();
- if ($_GET['do_search'])
- {
- $message = get_lang('DisplaySearchResults').'<br />';
- $message .= '<a href="'.api_get_self().'">'.get_lang('DisplayAll').'</a>';
- Display::display_normal_message($message, false);
- }
- // Create a sortable table with survey-data
- $table = new SortableTable('surveys', 'get_number_of_surveys', 'get_survey_data',2);
- $table->set_additional_parameters($parameters);
- $table->set_header(0, '', false);
- $table->set_header(1, get_lang('SurveyName'));
- $table->set_header(2, get_lang('SurveyCode'));
- $table->set_header(3, get_lang('NumberOfQuestions'));
- $table->set_header(4, get_lang('Author'));
- $table->set_header(5, get_lang('Language'));
- $table->set_header(6, get_lang('Shared'));
- $table->set_header(7, get_lang('AvailableFrom'));
- $table->set_header(8, get_lang('AvailableUntill'));
- $table->set_header(9, get_lang('Invite'));
- $table->set_header(10, get_lang('Anonymous'));
- $table->set_header(11, get_lang('Modify'), false);
- $table->set_column_filter(10, 'anonymous_filter');
- $table->set_column_filter(11, 'modify_filter');
- $table->set_form_actions(array ('delete' => get_lang('DeleteSurvey')));
- $table->display();
- }
- /**
- * This function calculates the total number of surveys
- *
- * @return integer
- *
- * @author Patrick Cool <patrick.cool@UGent.be>, Ghent University
- * @version January 2007
- */
- function get_number_of_surveys()
- {
- global $table_survey;
- $search_restriction = survey_search_restriction();
- if ($search_restriction)
- {
- $search_restriction = 'WHERE '.$search_restriction;
- }
- $sql = "SELECT count(survey_id) AS total_number_of_items FROM ".$table_survey.' '.$search_restriction;
- $res = api_sql_query($sql, __FILE__, __LINE__);
- $obj = mysql_fetch_object($res);
- return $obj->total_number_of_items;
- }
- /**
- * This function gets all the survey data that is to be displayed in the sortable table
- *
- * @param unknown_type $from
- * @param unknown_type $number_of_items
- * @param unknown_type $column
- * @param unknown_type $direction
- * @return unknown
- *
- * @author Patrick Cool <patrick.cool@UGent.be>, Ghent University
- * @version January 2007
- */
- function get_survey_data($from, $number_of_items, $column, $direction)
- {
- global $table_survey;
- global $table_user;
- global $table_survey_question;
- // searching
- $search_restriction = survey_search_restriction();
- if ($search_restriction)
- {
- $search_restriction = ' AND '.$search_restriction;
- }
- $sql = "SELECT
- survey.survey_id AS col0,
- CONCAT('<a href=\"survey.php?survey_id=',survey.survey_id,'\">',survey.title,'</a>') AS col1,
- survey.code AS col2,
- count(survey_question.question_id) AS col3,
- CONCAT(user.firstname, ' ', user.lastname) AS col4,
- survey.lang AS col5,
- IF(is_shared<>0,'V','-') AS col6,
- survey.avail_from AS col7,
- survey.avail_till AS col8,
- CONCAT('<a href=\"survey_invitation.php?view=answered&survey_id=',survey.survey_id,'\">',survey.answered,'</a> / <a href=\"survey_invitation.php?view=invited&survey_id=',survey.survey_id,'\">',survey.invited, '</a>') AS col9,
- survey.anonymous AS col10,
- survey.survey_id AS col11
- FROM $table_survey survey
- LEFT JOIN $table_survey_question survey_question ON survey.survey_id = survey_question.survey_id
- , $table_user user
- WHERE survey.author = user.user_id
- $search_restriction
- ";
- $sql .= " GROUP BY survey.survey_id";
- $sql .= " ORDER BY col$column $direction ";
- $sql .= " LIMIT $from,$number_of_items";
- $res = api_sql_query($sql, __FILE__, __LINE__);
- $surveys = array ();
- while ($survey = mysql_fetch_row($res))
- {
- $surveys[] = $survey;
- }
- return $surveys;
- }
- /**
- * This function changes the modify column of the sortable table
- *
- * @param integer $survey_id the id of the survey
- * @return html code that are the actions that can be performed on any survey
- *
- * @author Patrick Cool <patrick.cool@UGent.be>, Ghent University
- * @version January 2007
- */
- function modify_filter($survey_id)
- {
- global $charset;
- $return = '<a href="create_new_survey.php?'.api_get_cidreq().'&action=edit&survey_id='.$survey_id.'">'.Display::return_icon('edit.gif', get_lang('Edit')).'</a>';
- $return .= '<a href="survey_list.php?'.api_get_cidreq().'&action=delete&survey_id='.$survey_id.'" onclick="javascript:if(!confirm(\''.addslashes(htmlentities(get_lang("DeleteSurvey").'?',ENT_QUOTES,$charset)).'\')) return false;">'.Display::return_icon('delete.gif', get_lang('Delete')).'</a>';
- //$return .= '<a href="create_survey_in_another_language.php?id_survey='.$survey_id.'">'.Display::return_icon('copy.gif', get_lang('Copy')).'</a>';
- //$return .= '<a href="survey.php?survey_id='.$survey_id.'">'.Display::return_icon('add.gif', get_lang('Add')).'</a>';
- $return .= '<a href="preview.php?'.api_get_cidreq().'&survey_id='.$survey_id.'">'.Display::return_icon('preview.gif', get_lang('Preview')).'</a>';
- $return .= '<a href="survey_invite.php?'.api_get_cidreq().'&survey_id='.$survey_id.'">'.Display::return_icon('survey_publish.gif', get_lang('Publish')).'</a>';
- $return .= '<a href="survey_list.php?'.api_get_cidreq().'&action=empty&survey_id='.$survey_id.'" onclick="javascript:if(!confirm(\''.addslashes(htmlentities(get_lang("EmptySurvey").'?')).'\')) return false;">'.Display::return_icon('empty.gif', get_lang('EmptySurvey')).'</a>';
- $return .= '<a href="reporting.php?'.api_get_cidreq().'&survey_id='.$survey_id.'">'.Display::return_icon('statistics.gif', get_lang('Reporting')).'</a>';
- return $return;
- }
- function anonymous_filter($anonymous)
- {
- if ($anonymous == 1)
- {
- return get_lang('Yes');
- }
- else
- {
- return get_lang('No');
- }
- }
- /**
- * this function handles the search restriction for the SQL statements
- *
- * @return false or a part of a SQL statement
- *
- * @author Patrick Cool <patrick.cool@UGent.be>, Ghent University
- * @version January 2007
- */
- function survey_search_restriction()
- {
- if ($_GET['do_search'])
- {
- if ($_GET['keyword_title']<>'')
- {
- $search_term[] = 'title =\''.Database::escape_string($_GET['keyword_title']).'\'';
- }
- if ($_GET['keyword_code']<>'')
- {
- $search_term[] = 'code =\''.Database::escape_string($_GET['keyword_code']).'\'';
- }
- if ($_GET['keyword_language']<>'%')
- {
- $search_term[] = 'lang =\''.Database::escape_string($_GET['keyword_language']).'\'';
- }
- $search_restriction = implode(' AND ', $search_term);
- return $search_restriction;
- }
- else
- {
- return false;
- }
- }
- ?>
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