_form.html.erb

# app/views/talks/_form.html.erb

<%= form_for([@event, @talk]) do |f| %>
  <% if @talk.errors.any? %>
    <div id="error_explanation">
      <h2><%= pluralize(@talk.errors.count, "error") %> prohibited this talk from being saved:</h2>

      <ul>
      <% @talk.errors.full_messages.each do |msg| %>
        <li><%= msg %></li>
      <% end %>
      </ul>
    </div>
  <% end %>

  <div class="field">
    <%= f.label :title %><br />
    <%= f.text_field :title %>
  </div>
  <div class="field">
    <%= f.label :abstract %><br />
    <%= f.text_area :abstract %>
  </div>
  <div class="field">
    <%= f.label :level %><br />
    <%= f.text_field :level %>
  </div>
  <div class="actions">
    <%= f.submit %>
  </div>
<% end %>

backtrace

Need to include once I can 'bundle install'

new.html.erb_spec.rb

# spec/views/talks/new.html.erb_spec.rb

require 'spec_helper'

describe 'talks/new.html.erb' do
  before(:each) do
    assign(:talk, stub_model(Talk,
      :new_record? => true,
      :event_id => 12
    ))
    view.stub!(:event_talks_path).and_return {'/events/12/talks'}
  end

  it 'renders new talk form' do
    render
    rendered.should have_selector('form', :action => talks_path, :method => 'post') do |form|
      form.should have_selector('input#talk_title', :name => 'talk[title]')
      form.should have_selector('textarea#talk_abstract', :name => 'talk[abstract]')
      form.should have_selector('input#talk_level', :name => 'talk[level]')
    end
  end
end

I don't think it matters, but I am using the 0.7.2.pre branch of webrat at http://github.com/kalv/webrat.git