Cucumber & webrat, selecting from a radio button list

I'm trying to get webrat to select a radio button from a list, using cucumber.

I have this scenario:

Scenario: Update an existing article
    Given I have an article with title Big Bananas and body text Big yellow bananas are good for you
    And I am on the list of articles
    When I choose "Big Bananas"
    And press "Update article"
    And I fill in "Title" with "Massive Bananas"
    And I press "Save"
    Then I should have an article titled Massive Bananas
    And I should not have an article titled Big Bananas

And my view contains:

.
.
<% @articles.each do |article| %>
  <tr>
    <td><%= radio_button_tag "article", article.title %></td>
    <td><%= article.title %></td>
    <td>
      <%article.tags.each do |tag|%>
        <div><%= tag.name %></div>
      <%end%>
    </td>
  </tr>
<%end%>
.
.

The problem is that I need my radio button id to be the title of the artic开发者_如何转开发le so web rat can pick it up from my cucumber scenario, at the moment my output for an item looks like:

<tr>
  <td><input id="article_big_bananas" name="article" type="radio" value="Big Bananas" /></td>  
  <td>Big Bananas</td>
  <td>  
    <div>fruit</div>
    <div>yellow</div>
  </td>
</tr>

Any ideas how I should do this?

I solved this problem now, but did it slightly differently. I have a bunch if edit links which I set the ID to be Edit_*, where * is the article id. I then have a cucumber step which retrieves the article ID from the database using the name and then follows the link with ID Edit_*. Here's my updated code:

Feature

  Scenario: Update an existing article
    Given I have an article with title "Big Bananas" and body text "Big yellow bananas are good for you"
    And I am on the list of articles
    When I follow "Edit" for "Big Bananas"
    And press "Update article"
    And I fill in "Title" with "Massive Bananas"
    And I press "Save"
    Then I should have an article titled "Massive Bananas"
    And I should not have an article titled "Big Bananas"

View

<table>
  <tr>
    <th>Articles</th>
    <th>Tags</th>
    <td></td>
  </tr>
  <% @articles.each do |article| %>
  <tr>
    <td><%= article.title %></td>
    <td>
      <%article.tags.each do |tag|%>
      <div><%= tag.name %></div>
      <%end%>
    </td>
    <td><%= link_to "Edit", {:controller => "articles", :action => "edit", :id => article.id}, :id => "Edit_" + article.id.to_s %></td>
  </tr>
  <%end%>
</table>
<%= link_to "New article", :action => "new" %>
<% if flash[:notice] %>
   <%= flash[:notice] %>
<% end %>

Cucumber step to click the correct edit link

When /^I follow "([^\"]*)" for "([^\"]*)"$/ do |link, article_title|
  article = Article.find_by_title article_title
  click_link link + "_" + article.id.to_s
end

Hope that helps anyone who's having the same problem.