[Rails] add dynamic nested attributes without nested form gem

[Angelo Cordova]

Hello people

In my rails 3.0.9  app I'm trying to add nested attributes
dynamically, but I don't want to use "nested form gem"

So I found this example

https://github.com/alloy/complex-form-examples/blob/a234fde4419836f277d7e340657f1d8418911d68/app/helpers/projects_helper.rb

 but this code doesn't work

module ProjectsHelper
  def remove_link_unless_new_record(fields)
    unless fields.object.new_record?
      out = ''
      out << fields.hidden_field(:_delete)
      out << link_to_function("remove", "$
(this).up('.#{fields.object.class.name.underscore}').hide(); $
(this).previous().value = '1'")
      out
    end
  end
end

I think that lines which starts with "out <<" make some conflicts,
because I've checked the html (firebug) and the simbols "<" and ">"
doesn't appear

&lt;a href="#" onclick="$(this).up('.task').hide(); $
(this).previous().value = '1'; return false;"&gt;remove&lt;/a&gt;

Can you help me please?? Thanks

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