---
id: T01
parent: S04
milestone: M010
provides: []
requires: []
affects: []
key_files: ["backend/schemas.py", "backend/routers/search.py", "backend/tests/test_search.py"]
key_decisions: ["Used PostgreSQL unnest() for topic tag aggregation rather than canonical_tags.yaml", "Secondary sort by name/title for deterministic ordering when view_counts tie"]
patterns_established: []
drill_down_paths: []
observability_surfaces: []
duration: ""
verification_result: "Ran python -m pytest tests/test_search.py -v -k suggestion — all 5 tests passed in 2.05s against a real PostgreSQL test database via SSH tunnel."
completed_at: 2026-03-31T06:35:34.220Z
blocker_discovered: false
---

# T01: Added GET /api/v1/search/suggestions endpoint returning popular techniques, topics, and creators with 5 integration tests

> Added GET /api/v1/search/suggestions endpoint returning popular techniques, topics, and creators with 5 integration tests

## What Happened
---
id: T01
parent: S04
milestone: M010
key_files:
  - backend/schemas.py
  - backend/routers/search.py
  - backend/tests/test_search.py
key_decisions:
  - Used PostgreSQL unnest() for topic tag aggregation rather than canonical_tags.yaml
  - Secondary sort by name/title for deterministic ordering when view_counts tie
duration: ""
verification_result: passed
completed_at: 2026-03-31T06:35:34.220Z
blocker_discovered: false
---

# T01: Added GET /api/v1/search/suggestions endpoint returning popular techniques, topics, and creators with 5 integration tests

**Added GET /api/v1/search/suggestions endpoint returning popular techniques, topics, and creators with 5 integration tests**

## What Happened

Added SuggestionItem and SuggestionsResponse Pydantic schemas to backend/schemas.py. Implemented the /suggestions endpoint in the search router with three DB queries: top 4 technique pages by view_count, top 4 topic tags via PostgreSQL unnest() aggregation, and top 4 creators (excluding hidden) by view_count. Results are deduplicated case-insensitively. Wrote 5 integration tests covering response shape, type coverage, deduplication, empty DB, and view_count ordering.

## Verification

Ran python -m pytest tests/test_search.py -v -k suggestion — all 5 tests passed in 2.05s against a real PostgreSQL test database via SSH tunnel.

## Verification Evidence

| # | Command | Exit Code | Verdict | Duration |
|---|---------|-----------|---------|----------|
| 1 | `python -m pytest tests/test_search.py -v -k suggestion` | 0 | ✅ pass | 2050ms |


## Deviations

Used func.unnest() for topic tag aggregation instead of canonical_tags.yaml pattern from the topics router — more appropriate for suggestions reflecting actual DB content.

## Known Issues

None.

## Files Created/Modified

- `backend/schemas.py`
- `backend/routers/search.py`
- `backend/tests/test_search.py`


## Deviations
Used func.unnest() for topic tag aggregation instead of canonical_tags.yaml pattern from the topics router — more appropriate for suggestions reflecting actual DB content.

## Known Issues
None.
