Hi,
I'm toying with Hobo to see if it might not just be what I've been looking for.
So far I like what I'm seeing, but in going through the tutorials (for Rails 3)
I tripped over something that took me a little while to figure out.
I was doing Tutorial 8, the one that introduces many-to-many relationships with
recipes and categories. Since in order to get the feel for a framework I like
to type the code myself rather than paste it, I had a CategoryAssignment that
looked like this:
class CategoryAssignment < ActiveRecord::Base
hobo_model # Don't put anything above this
fields do
timestamps
end
belongs_to :recipe
belongs_to :category
#...
end
With that, only one of Recipe or Category could have a children view hint. If I
added children to both, it would all blow up complaining that nil doesn't have
a class_name method. I started adding trace code through Hobo (pre26) in the
hope that I'd see something show up but the issue remained mysterious. Archives
seemed to indicate that similar problems had been solved around pre22.
In despair I went through the example code line by line and discovered that it
had those belongs_to lines in the other order:
belongs_to :category
belongs_to :recipe
I flipped those and all of a sudden everything works.
Now this may be something that's familiar to some (I have only limited
experience with Rails) but it certainly came as a shock to me! You'd think that
the order of belongs_to shouldn't matter, instead it seems to have to be
alphabetical. I searched for this but I couldn't find any indication beyond the
fact that order matters when guessing join tables (in has_and_belongs_to_many),
but that seems unrelated.
So this seems like it could be a bug. If not, it should be noted in the
tutorial in case someone else trips up on the same issue.
Thanks!
--
Robin Berjon
Robineko (http://robineko.com/)
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