mirror of
https://github.com/moodle/moodle.git
synced 2025-01-19 06:18:28 +01:00
140 lines
4.9 KiB
PHP
140 lines
4.9 KiB
PHP
<?PHP //$Id$
|
|
//This php script contains all the stuff to backup/restore
|
|
//chat mods
|
|
|
|
//This is the "graphical" structure of the chat mod:
|
|
//
|
|
// chat
|
|
// (CL,pk->id)
|
|
// |
|
|
// |
|
|
// |
|
|
// chat_messages
|
|
// (UL,pk->id, fk->chatid)
|
|
//
|
|
// Meaning: pk->primary key field of the table
|
|
// fk->foreign key to link with parent
|
|
// nt->nested field (recursive data)
|
|
// CL->course level info
|
|
// UL->user level info
|
|
// files->table may have files)
|
|
//
|
|
//-----------------------------------------------------------
|
|
|
|
//This function executes all the backup procedure about this mod
|
|
function chat_backup_mods($bf,$preferences) {
|
|
|
|
global $CFG;
|
|
|
|
$status = true;
|
|
|
|
//Iterate over chat table
|
|
$chats = get_records ("chat","course",$preferences->backup_course,"id");
|
|
if ($chats) {
|
|
foreach ($chats as $chat) {
|
|
//Start mod
|
|
fwrite ($bf,start_tag("MOD",3,true));
|
|
//Print chat data
|
|
fwrite ($bf,full_tag("ID",4,false,$chat->id));
|
|
fwrite ($bf,full_tag("MODTYPE",4,false,"chat"));
|
|
fwrite ($bf,full_tag("NAME",4,false,$chat->name));
|
|
fwrite ($bf,full_tag("INTRO",4,false,$chat->intro));
|
|
fwrite ($bf,full_tag("KEEPDAYS",4,false,$chat->keepdays));
|
|
fwrite ($bf,full_tag("STUDENTLOGS",4,false,$chat->studentlogs));
|
|
fwrite ($bf,full_tag("SCHEDULE",4,false,$chat->schedule));
|
|
fwrite ($bf,full_tag("CHATTIME",4,false,$chat->chattime));
|
|
fwrite ($bf,full_tag("TIMEMODIFIED",4,false,$chat->timemodified));
|
|
//if we've selected to backup users info, then execute backup_chat_messages
|
|
if ($preferences->mods["chat"]->userinfo) {
|
|
$status = backup_chat_messages($bf,$preferences,$chat->id);
|
|
}
|
|
//End mod
|
|
$status =fwrite ($bf,end_tag("MOD",3,true));
|
|
}
|
|
}
|
|
return $status;
|
|
}
|
|
|
|
//Backup chat_messages contents (executed from chat_backup_mods)
|
|
function backup_chat_messages ($bf,$preferences,$chat) {
|
|
|
|
global $CFG;
|
|
|
|
$status = true;
|
|
|
|
$chat_messages = get_records("chat_messages","chatid",$chat,"id");
|
|
//If there is messages
|
|
if ($chat_messages) {
|
|
//Write start tag
|
|
$status =fwrite ($bf,start_tag("MESSAGES",4,true));
|
|
//Iterate over each message
|
|
foreach ($chat_messages as $cha_mes) {
|
|
//Start message
|
|
$status =fwrite ($bf,start_tag("MESSAGE",5,true));
|
|
//Print message contents
|
|
fwrite ($bf,full_tag("ID",6,false,$cha_mes->id));
|
|
fwrite ($bf,full_tag("USERID",6,false,$cha_mes->userid));
|
|
fwrite ($bf,full_tag("SYSTEM",6,false,$cha_mes->system));
|
|
fwrite ($bf,full_tag("MESSAGE_TEXT",6,false,$cha_mes->message));
|
|
fwrite ($bf,full_tag("TIMESTAMP",6,false,$cha_mes->timestamp));
|
|
//End submission
|
|
$status =fwrite ($bf,end_tag("MESSAGE",5,true));
|
|
}
|
|
//Write end tag
|
|
$status =fwrite ($bf,end_tag("MESSAGES",4,true));
|
|
}
|
|
return $status;
|
|
}
|
|
|
|
//Return an array of info (name,value)
|
|
function chat_check_backup_mods($course,$user_data=false,$backup_unique_code) {
|
|
//First the course data
|
|
$info[0][0] = get_string("modulenameplural","chat");
|
|
if ($ids = chat_ids ($course)) {
|
|
$info[0][1] = count($ids);
|
|
} else {
|
|
$info[0][1] = 0;
|
|
}
|
|
|
|
//Now, if requested, the user_data
|
|
if ($user_data) {
|
|
$info[1][0] = get_string("messages","chat");
|
|
if ($ids = chat_message_ids_by_course ($course)) {
|
|
$info[1][1] = count($ids);
|
|
} else {
|
|
$info[1][1] = 0;
|
|
}
|
|
}
|
|
return $info;
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
// INTERNAL FUNCTIONS. BASED IN THE MOD STRUCTURE
|
|
|
|
//Returns an array of chats id
|
|
function chat_ids ($course) {
|
|
|
|
global $CFG;
|
|
|
|
return get_records_sql ("SELECT c.id, c.course
|
|
FROM {$CFG->prefix}chat c
|
|
WHERE c.course = '$course'");
|
|
}
|
|
|
|
//Returns an array of assignment_submissions id
|
|
function chat_message_ids_by_course ($course) {
|
|
|
|
global $CFG;
|
|
|
|
return get_records_sql ("SELECT m.id , m.chatid
|
|
FROM {$CFG->prefix}chat_messages m,
|
|
{$CFG->prefix}chat c
|
|
WHERE c.course = '$course' AND
|
|
m.chatid = c.id");
|
|
}
|
|
?>
|