disruptive tech wrote:> Hi
>
> I have another question for how best to do this. Now I have been
> following the tutorial at:
>
http://www.tunaslut.com/learning-ruby-drop-down-lists-in-one-to-many-relationships,
> however when I change the view over from
>
> <% @cities.each do |city| %>
> <tr>
> <td><%=h city.city_name %></td>
> <td><%=h city.country_id %></td>
>
> to:
>
> <% @cities.each do |city| %>
> <tr>
> <td><%=h city.city_name %></td>
> <td><%=h city.country.country_name %></td>
>
> The system breaks with the following error
>
> NoMethodError in Cities#index
>
> Showing app/views/cities/index.html.erb where line #12 raised:
>
> undefined method `country_name'' for nil:NilClass
...which means that city.country is nil. You have to make it not be.
> Extracted source (around line #12):
>
> when attempting to display data on cities
>
> My questions are:
>
> 1. Is there an easier way of doing drop down boxed populated from a
> table?
collection_select
> 2. is this foreign key assignment working?
> 3. is this a good way of doing FK asignments? is there a better way.
I don''t see any assignment in your code.
>
>
> Please forgive me, I''m old school, more used to the SQL
statements....
What''s that got to do with anything?
>
> Thanks again.
Best,
--
Marnen Laibow-Koser
http://www.marnen.org
marnen-sbuyVjPbboAdnm+yROfE0A@public.gmane.org
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