Deck comment mentions do not trigger notifications (users vs user)

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Assessment

Difficulty
2/5
Estimated time
1-3 hours
Newbie friendliness
78/100
Issue type
Bug
Clarity
Clearly specified
Activity status
Active
Tech stack
php
Domain
backend

Research direction

Start at NotificationHelper::sendMention(), where the issue identifies the mention-type check, and compare its expected value with the comment API payload. Verify the change against the Deck comment reproduction using a user mention; done means the mentioned user receives a Nextcloud notification without affecting other notification types.

Written by the indexing model from the issue text.

Description

Describe the bug

Mentions in Deck card comments are parsed correctly, but no notification is created for the mentioned user.

Deck 1.18.4 checks in NotificationHelper::sendMention():

if (($mention['type'] ?? 'users') !== 'users') {
    continue;
}

However, Nextcloud returns the mention type user, not users, so normal user mentions are skipped.

To Reproduce

  1. Create a Deck board and share it with another user, e.g. testuser.
  2. Create a card.
  3. Add a comment containing @testuser mention test.
  4. Log in as testuser.
  5. No notification is shown.

The comment API correctly recognizes the mention:

"mentions": [
    {
        "mentionId": "testuser",
        "mentionType": "user",
        "mentionDisplayName": "Test User"
    }
]

Other notifications work correctly:

  • sharing a Deck board
  • assigning/sharing a Deck card
  • mentioning the same user in a regular Nextcloud file comment

Expected behavior

The mentioned user should receive a Nextcloud notification.

Screenshots

Not applicable.

Client details:

  • Device: desktop
  • Browser: not relevant; reproducible server-side
Server details

Operating system: Ubuntu

Nextcloud version: 34.0.3

Deck version: 1.18.4

Signing status:

No errors before applying the workaround (occ integrity:check-app deck produced no output).

Additional information

Changing

if (($mention['type'] ?? 'users') !== 'users') {

to

if (($mention['type'] ?? null) !== 'user') {

immediately restores Deck mention notifications.

This may have been introduced with the board-access check for mentioned users in PR #7983.

Logs

No relevant errors observed.

Dominant language
JavaScript
Stars
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Forks
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Avg merge
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Merged PRs (30d)
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