- Introduce new panel in the admin dashboard for displaying
the least popular active cities.
- Implement a database scope `least_popular_active` to
retrieve cities based on their view counts.
- Ensure compatibility with both SQLite and PostgreSQL
for fetching city view data.
This addition enhances the admin dashboard by allowing
administrators to easily identify and manage cities that
are receiving less user interaction, thus aiding in strategic
planning for engagement and promotion.
songtianlun
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