Bootstrap pager renderer for will_paginate

bootstrap_pager_renderer.rb

class BootstrapPagerRenderer < WillPaginate::ActionView::LinkRenderer

  protected

    def gap
      text = @template.will_paginate_translate(:page_gap) { "&hellip;" }
      %{<li class="disabled"><a>#{text}</a></li>}
    end

    def next_page
      num = @collection.current_page < @collection.total_pages && @collection.current_page + 1
      css_class = @options[:reverse_links] ? 'previous' : 'next'
      previous_or_next_page(num, @options[:next_label], css_class)
    end

    def previous_page
      num = @collection.current_page > 1 && @collection.current_page - 1
      css_class = @options[:reverse_links] ? 'next' : 'previous' 
      previous_or_next_page(num, @options[:previous_label], css_class)
    end
    
    def previous_or_next_page(page, text, classname)
      if page
        link(text, page, :class => classname)
      else
        link(text, "#", :class => classname + ' disabled')
      end
    end
    
    def html_container(html)
      tag(:ul, html, container_attributes)
    end
  
  private
  
    def link(text, target, attributes = {})
      if target.is_a? Fixnum
        attributes[:rel] = rel_value(target)
        target = url(target)
      end
        
      unless target == "#"
        attributes[:href] = target
      end
      
      classname = attributes[:class]
      attributes.delete(:classname)
      tag(:li, tag(:a, text, attributes), :class => classname)
    end
end