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Viktor Miller b87ac203fe docs(06-01): complete mentor notification opt-in plan
Tasks completed: 2/2
- User preferences class with notification opt-in meta
- Helper method to query opted-in mentors

SUMMARY: .planning/phases/06-email-notifications/06-01-SUMMARY.md

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
2026-01-14 21:06:32 +09:00

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---
phase: 06-email-notifications
plan: 01
subsystem: user-management
tags: [user-preferences, notifications, opt-in, user-meta]
requires: [03-03]
provides: [mentor-notification-opt-in-system, opted-in-mentors-query]
affects: [06-03]
tech-stack:
added: []
patterns: [user-meta-preferences, profile-hooks]
key-files:
created: [includes/class-user-preferences.php]
modified: [includes/class-ddhh-job-manager.php, ddhh-job-manager.php]
key-decisions: []
issues-created: []
duration: 3 min
completed: 2026-01-14
---
# Phase 6 Plan 1: Mentor Notification Opt-In Summary
**Mentor notification preference system with profile UI toggle and query helper for opted-in users**
## Accomplishments
- Created DDHH_JM_User_Preferences class following singleton pattern
- Added notification opt-in checkbox on subscriber user profiles (German labels)
- Implemented user meta field 'ddhh_jm_notify_new_jobs' with secure save handling
- Built get_opted_in_mentors() helper method for efficient user ID queries
- Integrated class initialization into main plugin workflow
## Files Created/Modified
- `includes/class-user-preferences.php` - User preferences class with profile UI and query methods
- `includes/class-ddhh-job-manager.php` - Added initialization of user preferences hooks
- `ddhh-job-manager.php` - Added require statement for user preferences class
## Implementation Details
**Task 1: User Preferences Class**
- Class structure: Static methods with setup_hooks() pattern
- Profile display hooks: show_user_profile and edit_user_profile (covers own profile and admin edit)
- Role filtering: Only shows for users with 'subscriber' role (mentors)
- UI label: "Benachrichtigungen über neue Stellenangebote erhalten" (German)
- Help text: "Sie erhalten eine E-Mail, wenn ein neues Stellenangebot veröffentlicht wird."
- Security: Nonce verification for all save operations
- Meta key: 'ddhh_jm_notify_new_jobs' (boolean: '1' = opted in, '0' or missing = opted out)
- Default behavior: Opt-out (users must explicitly enable)
**Task 2: Query Helper Method**
- Method: get_opted_in_mentors() returns array of user IDs
- Query: WP_User_Query with role='subscriber' and meta_query for opt-in value
- Optimization: fields='ID' returns only IDs (efficient for batch processing)
- Error handling: Logs to error_log if query fails, returns empty array
- Ready for Phase 06-03 email batch processing
## Decisions Made
None - implementation followed established patterns and plan specifications exactly.
## Issues Encountered
None - straightforward implementation using WordPress user meta and profile hooks.
## Next Step
Ready for Plan 06-03 (async email batch processing on job publish). Plan 06-02 (Action Scheduler integration) is already complete and provides the async infrastructure needed.