Question

I have a table and paginated to 20 per page:

    <% @num = 0%>
    <table>
    <tr>
      <th>id</th>
      <th>title</th>
    </tr>

    <% for authors in @authors%>
    <tr>
       <td><%= @num += 1 %></td>
       <td><%= authors.title %></td>
    </tr>
    <% end %>

</table>
<%= will_paginate @authors%>

I would like to make the id row to be continues. When I click on 1nd page i should see 1,2 3, 4 etc id. And when I click 2nd page I should see 21, 22, 23 etc but it just restarted to 1, 2 3

Answer 1

Instead of initializing @num to 0, set it to

 @authors.offset

When you do

@authors = Author.paginate(...)

What you get back is a WillPaginate::Collection. This is a subclass of Array, with methods such as the total number of pages, the number of items per page etc. In particular, offset gives the offset of the current page.