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MDL-61984 mod_chat: Do not assume context passed is one of chat

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This commit is contained in:
Frédéric Massart 2018-04-24 10:38:27 +08:00
parent d11786cee3
commit 2b25b67ea1
1 changed files with 6 additions and 1 deletions
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7
mod/chat/classes/privacy/provider.php
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@ -167,7 +167,12 @@ class provider implements
return;
}
$chatid = get_coursemodule_from_id('chat', $context->instanceid, 0, false, MUST_EXIST)->instance;
$cm = get_coursemodule_from_id('chat', $context->instanceid);
if (!$cm) {
return;
}
$chatid = $cm->instance;
$DB->delete_records_select('chat_messages', 'chatid = :chatid', ['chatid' => $chatid]);
$DB->delete_records_select('chat_messages_current', 'chatid = :chatid', ['chatid' => $chatid]);
$DB->delete_records_select('chat_users', 'chatid = :chatid', ['chatid' => $chatid]);