Ordering .each results in the view

Question

I am wondering if it is possible to dictate the order (i.e. :order => 'created_at DESC') within the view. I realize that logic in the view is not ideal but I seem to be having some problems locating where to affect this output.

For instance, here is my code:

<% @user.questions.each do |question| %>
  <%= link_to_unless_current h (question.title), question %>
   Created about <%= time_ago_in_words h(question.created_at) %> ago
   Updated about <%= time_ago_in_words h(question.updated_at) %> ago

   <%= link_to 'Edit', edit_question_path(question) %> | 
   <%= link_to 'Destroy', question, :confirm => 'Are you sure?', :method => :delete %>

<% end %>

In my QuestionsController I have the following index action but it is not affecting the output from the code above.

class QuestionsController < ApplicationController 

def index

    @questions = Question.all(:order => 'created_at DESC', :limit => 20)

    respond_to do |format|
      format.html # index.html.erb
      format.xml  { render :xml => @questions }
    end
  end

end

UPDATE: With respect to changing the @user.questions to @questions I get this error:

You have a nil object when you didn't expect it!
You might have expected an instance of Array.
The error occurred while evaluating nil.each

UPDATE 2: I guess I should mention that this code is in the questions show view. views/questions/show.html.erb.

Answer 1

You can use:

<% unless @questions.empty? %>
   <% @questions.each do |question| %>
      # ...
   <% end %>
<% end %>

in your view and

@questions = Question.all(:order => 'created_at DESC', :limit => 20)

inside show or index method of QuestionsController.

Answer 2

An easy way to do it is to use reverse_each instead of each:

<% @user.questions.reverse_each do |question| %>

You get your questions in the descending order, and don't touch anything in the controller.