Hi Jeremy,

In my JSON API I'm allowing clients to pass in associations which they want 
to use for a retrieved object:

GET /users?include=quizzes.questions,posts

For that to be performant, I would like to eager load the requested 
associations. I was first thinking of parsing that "include" query, and 
eager loading the specified associations. It's fairly easy to implement, 
but I came to a wall when I need to eager load on a single object. The 
reason why I can't eager load on the dataset before fetching a single 
object is because it needs to happen dynamically during the serialization 
process; I give the serializer the object to serialize, which can be a 
dataset or a single instance, and then the serializer checks for the 
"include" query and calls eager loading.

What I was thinking, can I just have all my associations eager loaded by 
default? This seems to solve the case perfectly, because the query will 
happen only when you request the associations, meaning only associations 
that you are using will be fetched. So then I never need to think about 
eager loading, right? :)

Of course, that's my naive opinion, but I'm curious are there any downsides 
of this approach? Is it currently possible to tell Sequel to eager load all 
associations associations for a model when instantiating its dataset?

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