add dynamic nested attributes without nested form gem

Angelo_Cordova · November 4, 2011, 6:48pm

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

alloy/complex-form-examples/blob/a234fde4419836f277d7e340657f1d8418911d68/app/helpers/projects_helper.rb

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
  
  # These use the current date, but they could be lots easier.
  # Maybe just keep a global counter which starts at 10 or so.
  # That would be good enough if we only build 1 new record in the controller.
  #
  # And this of course is only needed because Ryan's example uses JS to add new
  # records. If you just build a new one in the controller this is all unnecessary.
  
  def add_task_link(name, form)
    link_to_function name do |page|
      task = render(:partial => 'task', :locals => { :pf => form, :task => Task.new })

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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

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

Can you help me please?? Thanks