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MDL-36941 core: added 'convhash' field to quickly get conversations

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This commit is contained in:
Mark Nelson
2018-03-23 12:30:28 +08:00
parent 0d51ae7ef3
commit b2cd17e6a9
9 changed files with 65 additions and 42 deletions
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message/classes/api.php
+15 -28
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@@ -637,7 +637,7 @@ class api {
public static function delete_conversation($userid, $otheruserid) {
global $DB, $USER;
$conversationid = self::get_conversation_between_users($userid, $otheruserid);
$conversationid = self::get_conversation_between_users([$userid, $otheruserid]);
// If there is no conversation, there is nothing to do.
if (!$conversationid) {
@@ -1202,24 +1202,15 @@ class api {
/**
* Returns the conversation between two users.
*
* @param int $userid1 The userid of the first user
* @param int $userid2 The userid of the second user
* @param array $userids
* @return int|bool The id of the conversation, false if not found
*/
public static function get_conversation_between_users($userid1, $userid2) {
public static function get_conversation_between_users(array $userids) {
global $DB;
$sql = "SELECT DISTINCT mc.id
FROM {message_conversations} mc
INNER JOIN {message_conversation_members} mcm
ON mcm.conversationid = mc.id
INNER JOIN {message_conversation_members} mcm2
ON mcm2.conversationid = mc.id
WHERE mcm.userid = :userid1
AND mcm2.userid = :userid2
AND mcm.id != mcm2.id";
$hash = helper::get_conversation_hash($userids);
if ($conversation = $DB->get_record_sql($sql, ['userid1' => $userid1, 'userid2' => $userid2])) {
if ($conversation = $DB->get_record('message_conversations', ['convhash' => $hash])) {
return $conversation->id;
}
@@ -1229,29 +1220,25 @@ class api {
/**
* Creates a conversation between two users.
*
* @param int $userid1 The userid of the first user
* @param int $userid2 The userid of the second user
* @param array $userids
* @return int The id of the conversation
*/
public static function create_conversation_between_users($userid1, $userid2) {
public static function create_conversation_between_users(array $userids) {
global $DB;
$conversation = new \stdClass();
$conversation->convhash = helper::get_conversation_hash($userids);
$conversation->timecreated = time();
$conversation->id = $DB->insert_record('message_conversations', $conversation);
// Add members to this conversation.
$member = new \stdClass();
$member->conversationid = $conversation->id;
$member->userid = $userid1;
$member->timecreated = time();
$DB->insert_record('message_conversation_members', $member);
$member = new \stdClass();
$member->conversationid = $conversation->id;
$member->userid = $userid2;
$member->timecreated = time();
$DB->insert_record('message_conversation_members', $member);
foreach ($userids as $userid) {
$member = new \stdClass();
$member->conversationid = $conversation->id;
$member->userid = $userid;
$member->timecreated = time();
$DB->insert_record('message_conversation_members', $member);
}
return $conversation->id;
}