How to paginate an array in a html form having submit button using will_paginate in rails

Question

I have a view page .html.erb in rails which displays the list of attachments (pulled from array) uploaded by a particular user. This view page has a Delete button at the end of the page (which deletes all the attachments selected by the user). I want to paginate this page. I want the delete button to be present along with pagination. I have tried removing button and form_for() in this page, then pagination worked. But when i include both, it throws an error

"undefined method `model_name' for ActiveRecord::Relation:Class"

please suggest some methodology to overcome this problem.

Answer 1

In controller file first include the paginate -

 def index
    @orders = Order.paginate(:page => params[:page], order: 'created_at desc', :per_page => 5)
      respond_to do |format|
      format.html # index.html.erb
      format.json { render json: @orders }
    end
 end

and in view file use as
<%= will_paginate @order_items %>

may this code will help to remove your errors.