Nested attributes for polymorphic models about rails

[activestylus]

On the previous lighthouse ticket, Josep M. Bach made the following comment:

February 27th, 2011 @ 02:01 PM
Seems that the builder doesn't know it's a one-to-many relationship or something like that, could it be?
In this particular line it checks for the [] naming after person[phones] - if it had found it, it would have triggered the #retrieve_auto_index method, which assigns an index ([0], [1]...). Sadly it matches nothing, so I'm guessing somewhere in the call stack it's not checking if person->phones is a 1-n relationship.

Any ideas?

[jdudek]

Why don't you add accepts_nested_attributes_for :phones to Person class? Then fields_for will add [0] to input names as you expect.

fields_for explicitly checks for existence of phones_attributes= method: https://github.com/rails/rails/blob/v3.0.7/actionpack/lib/action_view/helpers/form_helper.rb#L1159-1164

[activestylus]

cheers!

fwiw I had put the accepts_nested_attributes in there back in 3.0.5 and it didnt work, but apparently in 3.0.7 everything works as expected. Thanks again