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chamilo-lms
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[svn r11315] Improved delete_course() method to delete all traces of a course, including in the stats tables and the new tables in the main database

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skala
Yannick Warnier 19 years ago
parent 31fd0dedca
commit da61c45c34
1 changed files with 129 additions and 16 deletions
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  1. 145
      main/inc/lib/course.lib.php

145
main/inc/lib/course.lib.php
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@ -1189,6 +1189,11 @@ class CourseManager
* deleted.
* When the given course is a real course, also all virtual courses refering
* to the given course will be deleted.
* Considering the fact that we remove all traces of the course in the main
* database, it makes sense to remove all tracking as well (if stats databases exist)
* so that a new course created with this code would not use the remains of an older
* course.
*
* @param string $code The code of the course to delete
* @todo When deleting a virtual course: unsubscribe users from that virtual
* course from the groups in the real course if they are not subscribed in
@ -1205,16 +1210,39 @@ class CourseManager
$user_role_table = Database :: get_main_table(MAIN_USER_ROLE_TABLE);
$location_table = Database::get_main_table(MAIN_LOCATION_TABLE);
$role_right_location_table = Database::get_main_table(MAIN_ROLE_RIGHT_LOCATION_TABLE);
$table_session_course = Database::get_main_table(TABLE_MAIN_SESSION_COURSE);
$table_session_course_user = Database::get_main_table(TABLE_MAIN_SESSION_COURSE_USER);
$table_course_survey = Database::get_main_table(TABLE_MAIN_COURSE_SURVEY);
$table_course_survey_user = Database::get_main_table(TABLE_MAIN_SURVEY_USER);
$table_course_survey_reminder = Database::get_main_table(TABLE_MAIN_SURVEY_REMINDER);
$stats = false;
if(Database::get_statistics_database() != ''){
$stats = true;
$table_stats_hotpots = Database::get_statistic_table(TABLE_STATISTIC_TRACK_E_HOTPOTATOES);
$table_stats_attempt = Database::get_statistic_table(TABLE_STATISTIC_TRACK_E_ATTEMPT);
$table_stats_exercises = Database::get_statistic_table(TABLE_STATISTIC_TRACK_E_EXERCICES);
$table_stats_access = Database::get_statistic_table(TABLE_STATISTIC_TRACK_E_ACCESS);
$table_stats_lastaccess = Database::get_statistic_table(TABLE_STATISTIC_TRACK_E_LASTACCESS);
$table_stats_course_access = Database::get_statistic_table(TABLE_STATISTIC_TRACK_E_COURSE_ACCESS);
$table_stats_online = Database::get_statistic_table(TABLE_STATISTIC_TRACK_E_ONLINE);
$table_stats_default = Database::get_statistic_table(TABLE_STATISTIC_TRACK_E_DEFAULT);
$table_stats_downloads = Database::get_statistic_table(TABLE_STATISTIC_TRACK_E_DOWNLOADS);
$table_stats_links = Database::get_statistic_table(TABLE_STATISTIC_TRACK_E_LINKS);
$table_stats_uploads = Database::get_statistic_table(TABLE_STATISTIC_TRACK_E_UPLOADS);
}
$sql = "SELECT * FROM $table_course WHERE code='".$code."'";
$res = api_sql_query($sql, __FILE__, __LINE__);
if (mysql_num_rows($res) == 0)
if (Database::num_rows($res) == 0)
{
return;
}
$this_course = Database::fetch_array($res);
$db_name = $this_course['db_name'];
CourseManager :: create_database_dump($code);
if (!CourseManager :: is_virtual_course_from_system_code($code))
{
// If this is not a virtual course, look for virtual courses that depend on this one, if any
$virtual_courses = CourseManager :: get_virtual_courses_linked_to_real_course($code);
foreach ($virtual_courses as $index => $virtual_course)
{
@ -1224,30 +1252,72 @@ class CourseManager
// Unsubscribe all users from the virtual course
$sql = "DELETE FROM $table_course_user WHERE course_code='".$virtual_course['code']."'";
api_sql_query($sql, __FILE__, __LINE__);
// Delete the course from the database
// Delete the course from the sessions tables
$sql = "DELETE FROM $table_session_course WHERE course_code='".$virtual_course['code']."'";
api_sql_query($sql,__FILE__,__LINE__);
$sql = "DELETE FROM $table_session_course_user WHERE course_code='".$virtual_course['code']."'";
api_sql_query($sql,__FILE__,__LINE__);
// Delete the course from the survey tables
$sql = "DELETE FROM $table_course_survey WHERE course_code='".$virtual_course['code']."'";
api_sql_query($sql,__FILE__,__LINE__);
$sql = "DELETE FROM $table_course_survey_user WHERE db_name='".$virtual_course['db_name']."'";
api_sql_query($sql,__FILE__,__LINE__);
$sql = "DELETE FROM $table_course_survey_reminder WHERE db_name='".$virtual_course['db_name']."'";
api_sql_query($sql,__FILE__,__LINE__);
// Delete the course from the stats tables
if($stats)
{
$sql = "DELETE FROM $table_stats_hotpots WHERE exe_cours_id = '".$virtual_course['code']."'";
api_sql_query($sql,__FILE__,__LINE__);
$sql = "DELETE FROM $table_stats_attempt WHERE course_code = '".$virtual_course['code']."'";
api_sql_query($sql,__FILE__,__LINE__);
$sql = "DELETE FROM $table_stats_exercises WHERE exe_cours_id = '".$virtual_course['code']."'";
api_sql_query($sql,__FILE__,__LINE__);
$sql = "DELETE FROM $table_stats_access WHERE access_cours_code = '".$virtual_course['code']."'";
api_sql_query($sql,__FILE__,__LINE__);
$sql = "DELETE FROM $table_stats_lastaccess WHERE access_cours_code = '".$virtual_course['code']."'";
api_sql_query($sql,__FILE__,__LINE__);
$sql = "DELETE FROM $table_stats_course_access WHERE course_code = '".$virtual_course['code']."'";
api_sql_query($sql,__FILE__,__LINE__);
$sql = "DELETE FROM $table_stats_online WHERE course = '".$virtual_course['code']."'";
api_sql_query($sql,__FILE__,__LINE__);
$sql = "DELETE FROM $table_stats_default WHERE default_cours_code = '".$virtual_course['code']."'";
api_sql_query($sql,__FILE__,__LINE__);
$sql = "DELETE FROM $table_stats_downloads WHERE down_cours_id = '".$virtual_course['code']."'";
api_sql_query($sql,__FILE__,__LINE__);
$sql = "DELETE FROM $table_stats_links WHERE links_cours_id = '".$virtual_course['code']."'";
api_sql_query($sql,__FILE__,__LINE__);
$sql = "DELETE FROM $table_stats_uploads WHERE upload_cours_id = '".$virtual_course['code']."'";
api_sql_query($sql,__FILE__,__LINE__);
}
// Delete the course from the course table
$sql = "DELETE FROM $table_course WHERE code='".$virtual_course['code']."'";
api_sql_query($sql, __FILE__, __LINE__);
}
$sql = "SELECT * FROM $table_course WHERE code='".$code."'";
$res = api_sql_query($sql, __FILE__, __LINE__);
$course = mysql_fetch_object($res);
$course = Database::fetch_array($res);
if (!$_configuration['single_database'])
{
$sql = "DROP DATABASE IF EXISTS ".$course->db_name;
$sql = "DROP DATABASE IF EXISTS ".$course['db_name'];
api_sql_query($sql, __FILE__, __LINE__);
}
else
{
$db_pattern = $_configuration['table_prefix'].$course->db_name.$_configuration['db_glue'];
//TODO Clean the following code as currently it would probably delete another course
//similarly named, by mistake...
$db_pattern = $_configuration['table_prefix'].$course['db_name'].$_configuration['db_glue'];
$sql = "SHOW TABLES LIKE '$db_pattern%'";
$result = api_sql_query($sql, __FILE__, __LINE__);
while (list ($courseTable) = mysql_fetch_row($result))
while (list ($courseTable) = Database::fetch_array($result))
{
api_sql_query("DROP TABLE `$courseTable`", __FILE__, __LINE__);
}
}
$course_dir = api_get_path(SYS_COURSE_PATH).$course->directory;
$garbage_dir = api_get_path(GARBAGE_PATH).$course->directory.'_'.time();
$course_dir = api_get_path(SYS_COURSE_PATH).$course['directory'];
$garbage_dir = api_get_path(GARBAGE_PATH).$course['directory'].'_'.time();
rename($course_dir, $garbage_dir);
}
@ -1257,6 +1327,45 @@ class CourseManager
// Unsubscribe all users from the course
$sql = "DELETE FROM $table_course_user WHERE course_code='".$code."'";
api_sql_query($sql, __FILE__, __LINE__);
// Delete the course from the sessions tables
$sql = "DELETE FROM $table_session_course WHERE course_code='".$code."'";
api_sql_query($sql,__FILE__,__LINE__);
$sql = "DELETE FROM $table_session_course_user WHERE course_code='".$code."'";
api_sql_query($sql,__FILE__,__LINE__);
// Delete the course from the survey tables
$sql = "DELETE FROM $table_course_survey WHERE course_code='".$code."'";
api_sql_query($sql,__FILE__,__LINE__);
$sql = "DELETE FROM $table_course_survey_user WHERE db_name='".$db_name."'";
api_sql_query($sql,__FILE__,__LINE__);
$sql = "DELETE FROM $table_course_survey_reminder WHERE db_name='".$db_name."'";
api_sql_query($sql,__FILE__,__LINE__);
// Delete the course from the stats tables
if($stats)
{
$sql = "DELETE FROM $table_stats_hotpots WHERE exe_cours_id = '".$code."'";
api_sql_query($sql,__FILE__,__LINE__);
$sql = "DELETE FROM $table_stats_attempt WHERE course_code = '".$code."'";
api_sql_query($sql,__FILE__,__LINE__);
$sql = "DELETE FROM $table_stats_exercises WHERE exe_cours_id = '".$code."'";
api_sql_query($sql,__FILE__,__LINE__);
$sql = "DELETE FROM $table_stats_access WHERE access_cours_code = '".$code."'";
api_sql_query($sql,__FILE__,__LINE__);
$sql = "DELETE FROM $table_stats_lastaccess WHERE access_cours_code = '".$code."'";
api_sql_query($sql,__FILE__,__LINE__);
$sql = "DELETE FROM $table_stats_course_access WHERE course_code = '".$code."'";
api_sql_query($sql,__FILE__,__LINE__);
$sql = "DELETE FROM $table_stats_online WHERE course = '".$code."'";
api_sql_query($sql,__FILE__,__LINE__);
$sql = "DELETE FROM $table_stats_default WHERE default_cours_code = '".$code."'";
api_sql_query($sql,__FILE__,__LINE__);
$sql = "DELETE FROM $table_stats_downloads WHERE down_cours_id = '".$code."'";
api_sql_query($sql,__FILE__,__LINE__);
$sql = "DELETE FROM $table_stats_links WHERE links_cours_id = '".$code."'";
api_sql_query($sql,__FILE__,__LINE__);
$sql = "DELETE FROM $table_stats_uploads WHERE upload_cours_id = '".$code."'";
api_sql_query($sql,__FILE__,__LINE__);
}
// Delete the course from the database
$sql = "DELETE FROM $table_course WHERE code='".$code."'";
api_sql_query($sql, __FILE__, __LINE__);
@ -1279,14 +1388,14 @@ class CourseManager
$table_course = Database :: get_main_table(TABLE_MAIN_COURSE);
$sql = "SELECT * FROM $table_course WHERE code = '$course_code'";
$res = api_sql_query($sql, __FILE__, __LINE__);
$course = mysql_fetch_object($res);
$sql = "SHOW TABLES FROM $course->db_name";
$course = Database::fetch_array($res);
$sql = "SHOW TABLES FROM ".$course['db_name'];
$res = api_sql_query($sql, __FILE__, __LINE__);
while ($table = mysql_fetch_row($res))
while ($table = Database::fetch_array($res))
{
$sql = "SELECT * FROM `$course->db_name`.`$table[0]`";
$sql = "SELECT * FROM `".$course['db_name']."`.`".$table[0]."`";
$res3 = api_sql_query($sql, __FILE__, __LINE__);
while ($row = mysql_fetch_assoc($res3))
while ($row = Database::fetch_array($res3))
{
foreach ($row as $key => $value)
{
@ -1295,10 +1404,14 @@ class CourseManager
$sql_dump .= "\nINSERT INTO $table[0] SET ".implode(', ', $row).';';
}
}
$file_name = api_get_path(SYS_COURSE_PATH).$course->directory.'/mysql_dump.sql';
$file_name = api_get_path(SYS_COURSE_PATH).$course['directory'].'/mysql_dump.sql';
$handle = fopen($file_name, 'a+');
fwrite($handle, $sql_dump);
fclose($handle);
if($handle!==false){
fwrite($handle, $sql_dump);
fclose($handle);
}else{
//TODO trigger exception in a try-catch
}
}
} //end class CourseManager
?>
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