I have a domain model with 3 resources: Surveys, Questions, Choices.
(Surveys have_many Questions; Questions have_many Choices. Questions
belong_to Survey; Choices belong_to Question)
Here is how I’ve set up the routes:
ActionController::Routing::Routes.draw do |map|
map.resources :surveys do |survey|
survey.resources :questions do |question|
I am getting an error when trying to display the relationship in the
Title: <%=h @survey.title %>
Description: <%=h @survey.description %>
Created at: <%=h @survey.created_at %>
loop for displaying all questions for a survey
<% unless @survey.questions.empty? %>
<%= render :partial => “/questions/question/”, :collection =>
# loop for displaying question choices <% unless @question.choices.empty? %> <%= render :partial => "/choices/choice/", :collection =>
<% end %>
<%= link_to "Add choice", new_choice_url(@question.choices) %>
<% end %>
(The partials are both just displaying a single column “title” from the
questions and surveys table.)
This is the error:
“You have a nil object when you didn’t expect it!
The error occurred while evaluating nil.choices”
Any thoughts on what I’m doing wrong?
I am very much a newbie, so if I’m missing any pertinent or supporting
info, please let me know. Thanks in advance.