_feed_form.html.erb

<%= form_for([@day, @feed]) do |f| %>

  <%= f.text_area :live_feed, :size => "34x13" %><br>
	
  <%= f.submit %>
<% end %>

feeds index.html.erb

<br>
<%= link_to "Back", day_path(@day) %><br>
<h1>Status...</h1>
<%= render "feed_form" %>


<h1>Live Feed</h1>

<% @feeds.each do |f| %>
  <ul>
  	<li><%= f.live_feed %></li>
  </ul>
<% end %>

Feeds_Controller

class FeedsController < ApplicationController
  
  def index
    @day = Day.find(params[:day_id])
    @feed = @day.feeds.build          # build association object
    @feeds = @day.feeds.all           # list all feed submits
  end
  
  def create
    @day = Day.find(params[:day_id])
    @feed = @day.feeds.build(params[:live_feed])
    if @feed.save
      redirect_to day_feeds_path(@day)
    else
      render "index"
    end
  end
  
end

models

class Day < ActiveRecord::Base
  attr_accessible :sleep, :wake
  has_one :habit, :dependent => :destroy
  has_many :feeds, :dependent => :destroy
  belongs_to :user
end


class Feed < ActiveRecord::Base
  belongs_to :day
  attr_accessible :live_feed
end

routes

Life::Application.routes.draw do

  devise_for :users do
    resources :days
  end

  root :to => "Days#index"
  
  resources :days do 
    resources :habits
  end
  
  resources :days do
    resources :feeds
  end
  
end