Module: Admin::Pagination

Included in:
BaseController
Defined in:
lib/generators/open_loam/install/templates/admin/pagination.rb

Overview

Pagination with no gem attached — the smallest thing that works:

@records, @page, @has_next = paginate(Equipment.order(created_at: :desc))

Swap in pagy or kaminari when you need total counts, numbered pages or a window of links; callers only ever use these three values, so the change stays inside this module and the index views.

Constant Summary collapse

PER_PAGE = 
25

Instance Method Summary collapse

Instance Method Details

#paginate(scope, per_page: PER_PAGE) ⇒ Object 



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# File 'lib/generators/open_loam/install/templates/admin/pagination.rb', line 12

def paginate(scope, per_page: PER_PAGE)
  page = params[:page].to_i
  page = 1 if page < 1

  # One row more than a page is fetched and never rendered: it answers
  # "is there a next page?" without a second COUNT over the whole table.
  records = scope.limit(per_page + 1).offset((page - 1) * per_page).to_a

  [ records.first(per_page), page, records.size > per_page ]
end