Implement Support for Multiple Alternative Region Hierarchies

[OhmSpectator]

Description

Our application currently uses a single hierarchy of regions based on the GDAM file. We aim to expand our system to support multiple alternative hierarchies, allowing users to view and interact with region data through different structural perspectives.

Objective

• Enable the integration of various hierarchical models for regions.
• Design a flexible data model that can accommodate multiple hierarchies.
• Implement a user interface that allows users to choose between different hierarchical views.
• Ensure backend logic supports dynamic hierarchy selection.
• Conduct extensive testing to ensure robustness and data integrity across hierarchies.
• Update documentation to include details and guidelines for managing multiple hierarchies.

Tasks

• Create a Reference Alternative Hierarchy Extend Database Schema for Multiple Alternative Hierarchies #74
• Update API: Update API to Support Hierarchy Parameterization #72
• Update Backend: Implement Backend Support for Alternative Region Hierarchy #71
• Update Frontend: Enhance Frontend with Hierarchy Switching Capability #73
• Add a "Canonical" Hierarchy: Create 'wikivoyage_regions' Table for Wikivoyage Hierarchy Data #75
• Testing and Validation: Test the system across various scenarios and hierarchies.
• Documentation Update: Document the changes and provide guidelines for future integrations.