Hi, I am making a typical web application using SQLAlchemy, and it contains “users”, “works” and “likes”:
- users ( id, login, … ) - works ( id, title, … ) - likes ( user_id, work_id ) I want to print how many users liked each work, so the most simple (but naive) is querying count of them e.g.: len(work.like_set) work.like_query.count() However it’s inefficient, so I want to maintain like_count field or such thing for works. The problem is that I have to manually update the field every time new like is inserted or existing like is deleted. I thought it could be automatically updated without inconsistency if I catch SQLAlchemy events, but I’m not sure whether it’s correct way to do it or not. How do you guys solve such situation with SQLAlchemy? Thanks, Hong Minhee -- You received this message because you are subscribed to the Google Groups "sqlalchemy" group. To view this discussion on the web visit https://groups.google.com/d/msg/sqlalchemy/-/EnzHBbacWU8J. To post to this group, send email to sqlalchemy@googlegroups.com. To unsubscribe from this group, send email to sqlalchemy+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/sqlalchemy?hl=en.
