Ruby on rails activerecord joins - select fields from multiple tables?

You need to use includes here. It preloads data so you won't have another SQL query when you do user. Status_messages .

First of all, I don't think it is possible (and reasonable) what you want to do. The reason for that is that the relation between User and StatusMessage is 1:n, that means that each user could have 0 to n status messages. How should these multitudes of attributes be included in your user model?

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