I thought I was trying to do something rather simple, but it has
caused me a lot of headaches. Here it is:
- in my program: model_a has_many model_b. model_b has_many model_c.
- in the user interface, I would like the user to be able to fill the
information for one model_a, one or more associated model_bs
(corresponding fields could be added with a set of links 'add/remove a
model_b'), and for each model_b added, one or more model_c (with the
Thanks to the great tutorial "Handle multiple models in one form",
it's easy to handle the first step (any number of model_b per
model_a), but I can't get the second step to work. The natural
indexing should (I think) be:
But it doesn't seem to work. I read here http://guides.rubyonrails.org/form_helpers.html
that "only one level of “arrayness” is allowed" and that I should use
hashes instead, but I am not quite sure I understand how to do it.
Do you have any idea?
Thanks a lot