Hi,   The typical case I'm thinking of is the one that appears on ember documentation of a post with comments. So I'll describe an example situation situation:    Let post  and comment be models. A post has many comments. However, the only case in which it makes sense to get a post with its comments is when I'm viewing the post on itself in /posts/:id. I do not want to load all the comments when I'm on /posts as they are not needed.    I found this answer in stackoverflow in which they load the ...