Can anyone explain to me the sql query done in the last step :
It has nothing to do with polymorphism. You'll want to look into eager loading for your associations if you want to avoid those queries.
-e
Can anyone explain to me the sql query done in the last step :
Because activerecord isn't super smart in this way and doesn't fill in associations bidirectionally when they are loaded.
Fred
So what’s the solution to that Fred ? I would have to load question also when I load the subquestion ? That would mean doing a different query twice for extracting the same object. Or is there any other way around ?
So what's the solution to that Fred ? I would have to load question also when I load the subquestion ? That would mean doing a different query twice for extracting the same object. Or is there any other way around ?
There isn't really good solution. There's a plugin that attempts to address this (parental_control), or you can fiddle around making ar believe it has already loaded it. The ar_context plugin can also be helpful in this context. You can also make your include load it (ie :include => {:subquestion => :question} but that always seems a bit messy. You also do things semi manually ie instead of referencing foo.question, collect all the questions into a hash indexed by id and access your_hash[foo.question_id]
Fred
hmm Right… Thanks 