My problem is that I have two classes where the eager loading isn't
working as well as I would hope...
Here are my two classes:
class Daynote < ActiveRecord::Base
class Userplace < ActiveRecord::Base
has_many :daynote, :dependent => true
When I show my userplaces, I want to get the associated daynotes with
them, so I am doing:
@userplace = Userplace.find(params[:id],:include => :daynote)
What I'm seeing is that @userplace.daynote uses the array of objects
from the eager load. That's what I want, since it cuts out a lot of
queries. But then if I pass the daynote object to another function or
partial, and then use daynote.userplace (the inverse), it has to do a
query to look up the userplace, again. I would think I've already
loaded that association, so it would use the cached version, but it
Now, if I switch the load to:
@userplace = Userplace.find(params[:id],:include =>
then it works, but that's an ugly hack since now it includes the
userplace columns twice in the SQL. OTOH, it saves a lot of query time.
Any ideas? It's very possible I'm missing something fundamental here
but I'm pretty frustrated.