Potree extension routes not working after CKAN 2.9 to 2.11 migration

[mosoriob]

Problem Description

The Potree extension routes defined in src/ckanext-potree/ckanext/potree/views.py are not working after migrating from CKAN 2.9 to 2.11.

Affected Routes

The following Flask blueprint routes are not functioning:

• @blueprint.route('/dataset/potree/<resource_id>') - Main scene viewer
• @blueprint.route('/dataset/potree/<resource_id>/edit', methods=['GET', 'POST']) - Scene editor
• @blueprint.route('/dataset/potree/<resource_id>/save', methods=['POST']) - Save scene data

Technical Details

Current Implementation

• Plugin implements IBlueprint interface in plugin.py:8
• Blueprint registration via get_blueprint() method returns views.get_blueprints()
• Routes are defined using Flask Blueprint pattern in views.py:16, views.py:65, views.py:131

Migration Context

• Migrating from CKAN 2.9 to 2.11
• Other extensions and core CKAN functionality appears to be working
• Issue is specific to custom blueprint routes

Potential Causes

1. Blueprint Registration Changes: CKAN 2.11 may have changed how blueprints are registered or discovered
2. Flask/Werkzeug Version: Updated Flask/Werkzeug versions in CKAN 2.11 may require route pattern changes
3. URL Generation: The toolkit.url_for('potree.scene_viewer', resource_id=resource['id']) call in plugin.py:60 may need updating
4. Plugin Loading Order: Blueprint registration timing may have changed

Expected Behavior

Routes should be accessible and functional as they were in CKAN 2.9.

Investigation Needed

• Verify blueprint is being registered correctly in CKAN 2.11
• Check if Flask Blueprint syntax needs updates for newer Flask version
• Confirm URL routing patterns are compatible with CKAN 2.11
• Test if plugin loading order affects blueprint registration
• Review CKAN 2.11 migration documentation for blueprint-related changes

Related Files

• src/ckanext-potree/ckanext/potree/plugin.py - Plugin definition and blueprint registration
• src/ckanext-potree/ckanext/potree/views.py - Route definitions and handlers
• src/ckanext-potree/ckanext/potree/helpers.py - Helper functions

Environment

• CKAN version: 2.11 (migrating from 2.9)
• Branch: 102-migrate-ckan-from-29-to-211