StarPunk/docs/design/v1.3.0/2025-12-10-phase3-implementation.md

# v1.3.0 Phase 3 Implementation Report

**Date**: 2025-12-10
**Developer**: StarPunk Developer
**Phase**: Phase 3 - Routes and Admin
**Status**: Complete

## Summary

Implemented Phase 3 of the v1.3.0 microformats and tags feature as specified in `microformats-tags-design.md`. This phase adds tag support to routes and admin interfaces, completing the full tag system implementation.

## Changes Implemented

### 1. Public Routes (`starpunk/routes/public.py`)

#### Tag Archive Route
- **Route**: `/tag/<tag>`
- **Functionality**:
  - Normalizes tag parameter to lowercase before lookup
  - Returns 404 if tag not found
  - Loads all published notes with the specified tag
  - Pre-loads media and tags for each note
- **Template**: `templates/tag.html` (not created in this phase, per design doc)

#### Index Route Updates
- Pre-loads tags for each note using `object.__setattr__(note, '_cached_tags', tags)`
- Consistent with media loading pattern

#### Note Route Updates
- Pre-loads tags for the note using `object.__setattr__(note, '_cached_tags', tags)`
- Tags available in template via `note.tags`

### 2. Admin Routes (`starpunk/routes/admin.py`)

#### Create Note Route
- Added `tags` parameter extraction from form
- Parses comma-separated tags using `parse_tag_input()`
- Passes tags to `create_note()` function
- Empty tag field creates note without tags

#### Edit Note Form Route
- Pre-loads tags when loading the edit form
- Tags available for display in form via `note.tags`

#### Update Note Route
- Added `tags` parameter extraction from form
- Parses comma-separated tags using `parse_tag_input()`
- Passes tags to `update_note()` function
- Empty tag field removes all tags from note

### 3. Admin Templates

#### `templates/admin/edit.html`
- Added tag input field between slug and published checkbox
- Pre-fills with existing tags: `{{ note.tags|map(attribute='display_name')|join(', ') }}`
- Placeholder text provides example format
- Help text explains comma separation and blank field behavior

#### `templates/admin/new.html`
- Added tag input field between media upload and published checkbox
- Placeholder text provides example format
- Help text explains comma separation

## Design Decisions

Following the architect's Q&A responses:

1. **URL normalization**: Tag route normalizes URL parameter to lowercase before lookup
2. **Tag loading**: Pre-load using `object.__setattr__()` pattern (consistent with media)
3. **Admin input**: Plain text field, comma-separated
4. **Empty field behavior**: Removes all tags on update, creates without tags on create
5. **Tag parsing**: Uses `parse_tag_input()` which handles trim, dedupe, and normalization

## Testing

All existing tests pass:
- Micropub category tests pass (tags work via API)
- Custom slug tests pass (admin routes work)
- Microformats tests pass (templates load correctly)

Only one pre-existing test failure unrelated to this implementation:
- `test_migration_race_condition.py::TestGraduatedLogging::test_debug_level_for_early_retries`
  - This is a logging test issue, not related to tag functionality

## Files Modified

1. `/home/phil/Projects/starpunk/starpunk/routes/public.py`
   - Added tag archive route
   - Updated index route to pre-load tags
   - Updated note route to pre-load tags

2. `/home/phil/Projects/starpunk/starpunk/routes/admin.py`
   - Updated create route to handle tag input
   - Updated edit form route to pre-load tags
   - Updated update route to handle tag input

3. `/home/phil/Projects/starpunk/templates/admin/edit.html`
   - Added tag input field

4. `/home/phil/Projects/starpunk/templates/admin/new.html`
   - Added tag input field

## Integration with Previous Phases

This phase completes the tag system started in Phase 1 (backend) and Phase 2 (templates):

- **Phase 1**: Database schema and `starpunk/tags.py` module
- **Phase 2**: Template markup for displaying tags
- **Phase 3**: Routes and admin integration (this phase)

All three phases work together to provide:
- Tag creation via admin interface
- Tag creation via Micropub API (already working from Phase 1)
- Tag display on note pages (from Phase 2)
- Tag archive pages (new route)
- Tag loading in all relevant routes (performance optimization)

## Known Limitations

Per design document:
- No pagination on tag archive pages (acceptable for v1.3.0)
- No tag autocomplete in admin (out of scope)
- Tag archive template (`templates/tag.html`) not created yet (will be done in template phase)

## Next Steps

According to the design document, the next phase should be:
- **Phase 4**: Validation with mf2py and indiewebify.me
- Create `templates/tag.html` if not already created in Phase 2
- Run microformats validation tests
- Manual testing with indiewebify.me

## Verification

To verify this implementation:

```bash
# Run tests
uv run pytest tests/test_micropub.py::test_micropub_create_with_categories -xvs
uv run pytest tests/test_custom_slugs.py tests/test_microformats.py -xvs

# Test in browser
1. Create note via admin with tags: "Python, IndieWeb, Testing"
2. Edit note and change tags
3. Set tags to empty string to remove all tags
4. View note page to see tags displayed
5. Click tag link to view tag archive (404 until template created)
```

## Notes

The implementation strictly follows the architect's design in `microformats-tags-design.md`. All decisions documented in the Q&A section were applied:
- Tag normalization happens in route before lookup
- Pre-loading pattern matches media loading
- Admin forms use simple text input with comma separation
- Empty field removes tags (explicit user action)

No architectural decisions were made by the developer - all followed existing patterns and architect specifications.