L-electron-Rare/moodle
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

MDL-54687 core_message: added ability to delete conversations

Browse Source
This commit is contained in:
Mark Nelson
2016-10-07 16:20:51 +08:00
parent 16245a40b9
commit dec0cd9998
9 changed files with 338 additions and 18 deletions
Download Patch File Download Diff File Expand all files Collapse all files
message/classes/api.php
+88 -2
View File
@@ -95,7 +95,7 @@ class api {
*/
public static function get_messages($userid, $otheruserid, $limitfrom = 0, $limitnum = 0) {
$arrmessages = array();
if ($messages = \core_message\helper::get_messages($userid, $otheruserid, $limitfrom, $limitnum)) {
if ($messages = \core_message\helper::get_messages($userid, $otheruserid, 0, $limitfrom, $limitnum)) {
$arrmessages = \core_message\helper::create_messages($userid, $messages);
}
@@ -111,7 +111,7 @@ class api {
*/
public static function get_most_recent_message($userid, $otheruserid) {
// We want two messages here so we get an accurate 'blocktime' value.
if ($messages = \core_message\helper::get_messages($userid, $otheruserid, 0, 2, 'timecreated DESC')) {
if ($messages = \core_message\helper::get_messages($userid, $otheruserid, 0, 0, 2, 'timecreated DESC')) {
// Swap the order so we now have them in historical order.
$messages = array_reverse($messages);
$arrmessages = \core_message\helper::create_messages($userid, $messages);
@@ -159,4 +159,90 @@ class api {
return new \core_message\output\profile($userid, $data);
}
}
/**
* Checks if a user can delete messages they have either received or sent.
*
* @param int $userid The user id of who we want to delete the messages for (this may be done by the admin
* but will still seem as if it was by the user)
* @return bool Returns true if a user can delete the message, false otherwise.
*/
public static function can_delete_conversation($userid) {
global $USER;
$systemcontext = \context_system::instance();
// Let's check if the user is allowed to delete this message.
if (has_capability('moodle/site:deleteanymessage', $systemcontext) ||
((has_capability('moodle/site:deleteownmessage', $systemcontext) &&
$USER->id == $userid))) {
return true;
}
return false;
}
/**
* Deletes a conversation.
*
* This function does not verify any permissions.
*
* @param int $userid The user id of who we want to delete the messages for (this may be done by the admin
* but will still seem as if it was by the user)
* @param int $otheruserid The id of the other user in the conversation
* @return bool
*/
public static function delete_conversation($userid, $otheruserid) {
global $DB, $USER;
// We need to update the tables to mark all messages as deleted from and to the other user. This seems worse than it
// is, that's because our DB structure splits messages into two tables (great idea, huh?) which causes code like this.
// This won't be a particularly heavily used function (at least I hope not), so let's hope MDL-36941 gets worked on
// soon for the sake of any developers' sanity when dealing with the messaging system.
$now = time();
$sql = "UPDATE {message}
SET timeuserfromdeleted = :time
WHERE useridfrom = :userid
AND useridto = :otheruserid
AND notification = 0";
$DB->execute($sql, array('time' => $now, 'userid' => $userid, 'otheruserid' => $otheruserid));
$sql = "UPDATE {message}
SET timeusertodeleted = :time
WHERE useridto = :userid
AND useridfrom = :otheruserid
AND notification = 0";
$DB->execute($sql, array('time' => $now, 'userid' => $userid, 'otheruserid' => $otheruserid));
$sql = "UPDATE {message_read}
SET timeuserfromdeleted = :time
WHERE useridfrom = :userid
AND useridto = :otheruserid
AND notification = 0";
$DB->execute($sql, array('time' => $now, 'userid' => $userid, 'otheruserid' => $otheruserid));
$sql = "UPDATE {message_read}
SET timeusertodeleted = :time
WHERE useridto = :userid
AND useridfrom = :otheruserid
AND notification = 0";
$DB->execute($sql, array('time' => $now, 'userid' => $userid, 'otheruserid' => $otheruserid));
// Now we need to trigger events for these.
if ($messages = \core_message\helper::get_messages($userid, $otheruserid, $now)) {
// Loop through and trigger a deleted event.
foreach ($messages as $message) {
$messagetable = 'message';
if (!empty($message->timeread)) {
$messagetable = 'message_read';
}
// Trigger event for deleting the message.
\core\event\message_deleted::create_from_ids($message->useridfrom, $message->useridto,
$USER->id, $messagetable, $message->id)->trigger();
}
}
return true;
}
}