This works when I use it in a scaffold edit view but it doesn't work when I use it in the index scaffold view? What is this?

I get an error similar to this:

Called id for nil, which would mistakenly be 4 -- if you really wanted the id of nil, use object_id

My view code for index is standard like this:

<% @dogs.each do |dog| %>

<td><%= in_place_editor_field :dog, 'age' %></td>

....

The problem is in this code:

def in_place_editor_field(object, method, tag_options = {}, in_place_editor_options = {})

instance_tag = ::ActionView::Helpers::InstanceTag.new(object, method, self)

How can I adapt this to work in my index view?