Adding a variable to an ActiveRecord::Base

Question

I am showing some properties of an ActiveRecord::Base called Micropost:

<table>
  <tr>
    <th>Items</th>
    <th>Creation Date</th>
    <th>Progress</th>
  </tr>

  <td>
    <% @user.microposts.each do |micropost| %>
    <tr>
      <td><%= micropost.content %></td>
      <td><%= micropost.created_at %></td>
      <td><%= micropost.progress %></td>
    </tr>
    <% end %>
  </td>
</table>

This is the class definition:

class Micropost < ActiveRecord::Base
  belongs_to :user
  validates :content, length: { maximum: 140 }
  @progess = 0
end

It works fine if I don't put the <td><%= micropost.progress %></td>. However, if I do I get a:

undefined methodprogress' for #`

I have also tried progress :number but I can't quite seem to find out how I can add a variable to that class and display it on my .erb.

Jimmy · Accepted Answer · 2013-11-17 12:30:22Z

1

@progress = 0 sets a class-level instance variable and does not create any methods. To create instance methods, use def, or one of attr_accessor, attr_reader, or attr_writer.

answered Nov 17, 2013 at 12:30

Jimmy

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