snippet.rb

class CommentsController < ApplicationController
  before_filter :blogpost_find

  private
  def blogpost_find
    @blogpost = Blogpost.find(params[:blogpost_id])
  end      

      
  def index
    @comments = @blogpost.comments 
  end

  def show
    @comment = @blogpost.comments.find(params[:id])
  end
  
  def new
    @comment = @blogpost.comments.build
  end
  
  def create
    @comment = @blogpost.comments.build(params[:comment])
    if @comment.save && @comment.code == "Hey Fishie"
      redirect_to post_comment_url(@post, @comment)
    else
      render :action => "new"
    end
  end

  def update
      @comment = Comment.find(params[:id])
      if @comment.update_attributes(params[:comment])
        redirect_to post_comment_url(@post, @comment)
      else
        render :action => "edit"
      end
    end


  def edit
    @comment = @blogpost.comments.find(params[:id])
  end

  def destroy
    @comment = Comment.find(params[:id])
    @comment.destroy

    respond_to do |format|
      format.html { redirect_to post_comments_path(@post) }
      format.xml  { head :ok }
    end
  end



end