Rails: Couldn`t find #controller with ID of - ruby-on-rails

Question

When submitting an answer I get this error:
ActiveRecord::RecordNotFound (Couldn't find Question with ID=answer):
app/controllers/questions_controller.rb:6:in `show'
From what I understand I either made a error with passing an argument from the form or
didn`t define it correctly in my controller.
Would appreciate some help finding this bug, thanks in advance!
Questions_Controller:
class QuestionsController < ApplicationController
def index
end
def show
#question = Question.find(params[:id])
#choices = #question.choices
end
def answer
#choice = Choice.find(:first, :conditions => { :id => params[:id] })
#answer = Answer.create(:question_id => #choice.question_id, :choice_id => #choice.id)
if Question.last == #choice.question
render :action => "thank_you"
else
question = Question.find(:first, :conditions => { :position => (#choice.question.position + 1) })
redirect_to question_path(:id => question.id)
end
end
end
views/questions/show.html.erb :
<div data-role="content">
<div align="center">
<h3><%= #question.question %></h3>
</div>
<br><br>
<ul data-role="listview">
<% #choices.each_with_index do |c, i| %>
<% i = i + 1 %>
<li data-theme="c">
<%= link_to "#{i}. #{c.choice}", answer_questions_path(:id => c.id) %>
</li>
<% end %>
</ul>
</div>
::EDIT::
This happens when I try to select a choice & submit an answer while on the first question.
Started GET "/questions/1" for 127.0.0.1 at Thu Dec 01 01:38:36 -0500 2011
Processing by QuestionsController#show as
Parameters: {"id"=>"1"}
SQL (0.6ms) SELECT name
FROM sqlite_master
WHERE type = 'table' AND NOT name = 'sqlite_sequence'
Question Load (0.3ms) SELECT "questions".* FROM "questions" WHERE "questions"."id" = 1 LIMIT 1
Choice Load (10.8ms) SELECT "choices".* FROM "choices" WHERE ("choices".question_id = 1)
Rendered questions/show.html.erb within layouts/application (28.8ms)
Completed 200 OK in 424ms (Views: 118.0ms | ActiveRecord: 11.6ms)
Started GET "/questions/answer?id=1" for 127.0.0.1 at Thu Dec 01 01:38:38 -0500 2011
Processing by QuestionsController#show as
Parameters: {"id"=>"answer"}
Question Load (0.1ms) SELECT "questions".* FROM "questions" WHERE "questions"."id" = 0 LIMIT 1
Completed in 10ms
ActiveRecord::RecordNotFound (Couldn't find Question with ID=answer):
app/controllers/questions_controller.rb:6:in `show'
Hope this helps.

Answer 1

My best guess is that you don't have a route correctly setup. Assuming that you're using Rails 3 and you're using resources, you need to do add the following:
resources :questions do
member do
put 'answer'
end
end
This will create a route like /questions/#{id}/answer.
Answer is not an HTTP verb, so using resources in your routes will not create a route to your answer action.
Edit based on comment:
First, if you're updating or creating data, you should use put or post. It's a bad idea to modify data on the server with a get. Secondly, I assume that you would be doing an answer per question. If that is the case, you should do the action on a member, not a collection. Also, in your answer action, you have params[:id]. You won't get params[:id] if you try to do an action on a collection rather than a member.