Wall.rb

wall.rb

class Wall
  include DataMapper::Resource
  property :id,          Serial
  property :created_by, String
  property :title, String
  property :description, Text
  property :likes, Integer
  property :created_at, DateTime
end


class Message

  include DataMapper::Resource
  property :id,  Serial
  property :description, Text
  property :likes, Integer
  property :created_at, DateTime
  belongs_to :Wall
end

DataMapper.finalize
DataMapper.auto_upgrade!



get "/walls/:id/" do
  @wall = Wall.get(params[:id])
  @messages = Message.all
  erb :description
end

get "/walls/:id/new_message" do
  @wall = Wall.get(params[:id])
  @message = Message.new

  erb :new_message
end

post "/walls/:id/message" do
  @wall = Wall.get(params[:id])
  message_attributes = params["message"]
  @message = Message.create(message_attributes)

  if @message.saved?
    redirect "/walls/#{params[:id]}/"
  else
    erb :new_message
  end
end

put "/walls/:id/message/likes" do
  @message = Message.get(params[:id])
    if @message["likes"] += 1
    else @wall["likes"] = 1
    end
  @message.save
  redirect "/"       
end

******************

NEW_MESSAGE ERB

<h3>Add a Message to this Wall</h3>
<form method="POST" action="/walls/<%= @wall.id %>/message">


  </label><br />

  <label>Message:
    <textarea name="message[description]"><%= @message.description %></textarea>

  </label><br />

    <input type="hidden" name="message[likes]" value="<%= 0 %>" />

  <button>Create this Message!</button>
</form>

*******************

DESCRIPTION ERB

<h2>Wall Details</h2>

<ul>
  <button><a href="/">Return to Main Wall</a></button>
<p>
<label>Title: <%= @wall.title %>

   </label><br /><br />

<label>Description:  <%= @wall.description %>

  </label><br /><br />

<label>Author:  <%= @wall.created_by %>
  </label><br /><br />

<button><a href="/walls/<%= @wall.id %>/new_message">Write a Message on This Wall</a></button>
<ul>
<% @messages.each do |message| %>
  <li>
    <h2><p>Description: <%= message.description %></p></h2>
    <p><%= message.likes.to_s %> likes</p>
    </li>
    <% end %>
    </ul>