How to implement guide with activerecord's `pluck` method returning unexpected results when used with associations in rails 6
I'm migrating some code and I'm stuck on something that should probably be simple. I've been struggling with this for a few days now and could really use some help. I'm working with an scenario when using the `pluck` method with ActiveRecord in a Rails 6 application. I have two models, `User` and `Post`, where a user has many posts. I want to retrieve the titles of all posts for a specific user using the following code: ```ruby user = User.find(user_id) post_titles = user.posts.pluck(:title) ``` However, instead of returning an array of titles, I’m getting an empty array. I’ve confirmed that the user has posts associated with them, but the output of `post_titles` is `[]`. I also tried running the SQL query directly in the Rails console, and it returns the expected results: ```sql SELECT title FROM posts WHERE user_id = ? ``` I've ensured that the `user_id` is correct, and when I check `user.posts.count`, it shows the correct number of posts. I also verified that there are no issues with the database connection. I tried adding some debugging code: ```ruby Rails.logger.debug(user.posts.inspect) ``` This confirms that `user.posts` returns a collection of Post objects, but `pluck` still returns empty. I've also experimented with using `select` instead of `pluck`, but that doesn't work either. Do I need to consider any specific configurations or eager loading settings that might be impacting the query? Any insights on why `pluck` might not be behaving as expected in this scenario would be greatly appreciated. This is part of a larger service I'm building. Thanks in advance! Am I missing something obvious? I recently upgraded to Ruby stable. I recently upgraded to Ruby 3.10. Any advice would be much appreciated.