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Summary

  • Fix null reference crashes when accessing members/attendees with soft-deleted users
  • Filter out entries where user relation returns null before mapping/returning

Root Cause

When a user is soft-deleted, their groupMember/eventAttendee records remain but the user relation returns null. This caused:

  1. Email send crash at group-mail.service.ts - "Cannot read properties of null (reading 'email')"
  2. "Send to 0 members" dialog - API returns user: null, frontend crashes

Changes

group-member-query.service.ts:

  • findGroupDetailsMembers - filter null users
  • getMailServiceGroupMembersByPermission - filter null users
  • getSpecificGroupMembers - filter null users
  • getConfirmedGroupMembersForMatrix - filter null users

event-attendee.service.ts:

  • getMailServiceEventAttendeesByPermission - filter null users (preemptive fix)

Test plan

  • Added 7 unit tests for null user filtering
  • All 39 tests in affected suites passing
  • Manual test: Verify group member list loads for groups with orphaned records

Related

  • Follow-up: Consider cascade soft-delete of groupMember when user is deleted

When a user is soft-deleted, their groupMember/eventAttendee records
remain but the user relation returns null. This caused crashes when
trying to access user.email for mail services or listing members.

Fixes:
- group-member-query.service.ts: Filter null users in 4 methods
  - findGroupDetailsMembers
  - getMailServiceGroupMembersByPermission
  - getSpecificGroupMembers
  - getConfirmedGroupMembersForMatrix
- event-attendee.service.ts: Filter null users in
  - getMailServiceEventAttendeesByPermission

Added 7 tests to verify null user filtering.

Root cause: User soft-delete doesn't cascade to groupMember records.
@tompscanlan
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Hold merge, may be pointless if we fix #453

@tompscanlan
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covered by another fix

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2 participants