S.No not getting refreshed when clicking on page "2" in pagination link

Question

I want to display all standards in my view. But it should display 10 records per page. so I used will_pagination to handle this case. When I click first page, it displayed first 10 records of standards with S.No . But When I click second page, the S.No of 11th record shows "1". But the S.No should be 11 for the 11th record. It's not working. what will be the issue?

Controller:

@standards = Standard.select("standards.standard_id, standards.standard_name")
                     .where("standards.org_id = ?", org_id)
@standards =  @standards.paginate(:per_page => 10, :page => params[:page])   

View:

    <% if (@standards != nil && @standards.length > 0) then%>
        <% @standards.each.with_index(1) do |standard,index| %>
          <tr>
            <td> <%= index %></td>
            <td> <%= standard.standard_name %></td>
          </tr>
        <% end %>
        <div class="text-right">
          <% if @standards != nil then%>
            <%= will_paginate @standards, :class => 'pagination-xs',  renderer: BootstrapPagination::Rails %>
          <%end%>
        </div>

Answer 1

Use the param value to get the serial number:

<% count = ((params[:page] || 1).to_i - 1) * 10 %>

<% if (@standards != nil && @standards.length > 0) then%>
  <% @standards.each.with_index do |standard,index| %>
    <tr>
      <td> <%= count + index %></td>
      <td> <%= standard.standard_name %></td>
    </tr>
  <% end %>
  <div class="text-right">
    <% if @standards != nil then%>
      <%= will_paginate @standards, :class => 'pagination-xs',  renderer: BootstrapPagination::Rails %>
    <%end%>
  </div>

UPDATE

In you controller code:

@standards.paginate(:per_page => 10, :page => params[:page])

You are saying that you need 10 records per page and you have set the page number param as params[:page]

Initially we are not getting any params since it is page 1. So if no param value is received we have to take it as 1.

params[:page] || 1

In that case count = (1-1)*10 = 0

Consider you are on the second page and let your URL be like this:

localhost:3000/standards?page=2

Now you have params[:page] = 2

And count = (2 - 1)*10 = 10

So 10 will be added to the serial number of each record in the second page .