On 21 April 2012 05:04, Karl McCollester <[email protected]> wrote: > I appreciate your help in advance; I feel like the issue is staring me > in the face! > > I have two models: event and topic > > /models/event.rb: > class Event < ActiveRecord::Base > .. > has_many :topics > .. > > > /models/topic.rb: > class Topic < ActiveRecord::Base > belongs_to :event > end > > I'm successfully showing the dependent topics with the event: > /views/events/show.html.erb: > > .. > <table> > <%@event.topics.each do |topic| %> > <tr> > <td> <%= topic.Name %> </td> > <td> <%= topic.Description %></td> > </tr> > <% end %> > </table> > .. > > When I attempt to edit the record that I can successfully show, I get: > > Showing /views/events/_topic.html.erb where line #2 raised: > > undefined method `new_record?' for nil:NilClass > Extracted source (around line #2): > > 1: <div class="topic"> > 2: <% new_or_existing = topic.new_record? ? 'new': 'existing' %> > 3: <% prefix = "event[#{new_or_existing}_topic_attributes][]"%> > 4: > 5: <% fields_for prefix, topic do |topic_form| -%> > > The partial is rendered in edit.html.erb: > > <h1>Editing tag</h1> > > <%= render 'form' %> > <div id="topicContentArea"> > <%= render 'topic', :collection => @event.topics %>
I have not used :collection to pass something like @event.topics rather than a simple variable such as @topics, so wonder whether this works as you expect. You could try <%= render 'topic', :collection => @event.topics, :as => :topic %> in order to force the variable name in the partial. Colin -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.
