tweets#index

index.html.erb

<% @presenter.tweets.each do |tweet| %>
  <tr>
    <td><%= tweet.status %></td>
    <!--<td><%#= tweet.user.display_name %></td>-->
    <td><%= tweet.user %></td>
    <td><%= link_to 'Show', tweet %></td>
    <td><%= link_to 'Edit', edit_tweet_path(tweet) %></td>
    <td><%= link_to 'Destroy', tweet, :confirm => 'Are you sure?', :method => :delete %></td>
  </tr>
<% end %>

user.rb

class User < ActiveRecord::Base

  has_many :tweets
  has_one :account_setting, :dependent => :destroy
  accepts_nested_attributes_for :account_setting

  validates_presence_of :first_name, :last_name, :email
  validates_uniqueness_of :email

  def to_s
    "#{first_name} #{last_name}"
  end

end