Q: Rails: Is fields_for necessary for nested forms? I just finished making my first nested form and found that most of the trouble I had in getting it to work was me trying to avoid the "fields_for" loop. I was trying to set the field like this:
<%= file.field :asset, :image_url %>

Which would output something like:
<input type="file" name="asset[image_url]" />

So my question is:
Is there a way to get fields to change scope like "fields_for" does or do you have to use that loop for nested forms?
