gistfile1.txt

class CommentsController < ApplicationController
  def create
    @podcast = Podcast.find params[:comment][:podcast_id]
    params[:comment][:podcast_id] = nil
    @comment = @podcast.comments.new params[:comment]
    if @comment.save
      flash[:notice] = "Comment writen"
      redirect_to @podcast
    else
      @podcast = Podcast.find params[:comment][:podcast_id]
      @comments = @podcast.comments
      render "podcasts/show"
    end
  end
end


#spec

require File.expand_path(File.dirname(__FILE__) + '/../spec_helper')

describe CommentsController do

  describe "handling POST /comments with valid data" do
    before(:each) do
      @podcast = mock_model(Podcast)
      Podcast.stub!(:find).and_return(@podcast)
      Podcast.stub!(:comments).and_return([@comment])

      @comment_params = Factory.attributes_for(:comment)
      @comment_params[:podcast_id] = @podcast.id

      @comment = mock_model(Comment)
      Comment.stub!(:new).and_return(@comment)
      @podcast.stub!(:comments).and_return([@comment])
      @comment.stub!(:save).and_return(true)
    end

    it "should save comment" do
      @comment.should_receive(:save).and_return(true)
      post :create, { :comment => @comment_params }
    end

  end

end

#error
NoMethodError in 'CommentsController handling POST /comments with valid data should save comment'
undefined method `new' for [#<Comment:0x..fdb94fd94 @name="Comment_1028">]:Array